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Diffstat (limited to 'pkg/images/imutil/Revisions')
| -rw-r--r-- | pkg/images/imutil/Revisions | 2045 |
1 files changed, 2045 insertions, 0 deletions
diff --git a/pkg/images/imutil/Revisions b/pkg/images/imutil/Revisions new file mode 100644 index 00000000..706b483e --- /dev/null +++ b/pkg/images/imutil/Revisions @@ -0,0 +1,2045 @@ +.help revisions Jan97 images.imutil +.nf +pkg/images/imutil/imreplace.par +pkg/images/imutil/src/imrep.gx + Fixed a floating-point precision problem with short/int images in which + the lower cutoff could be rounded up. Also fixed a typo in the parameter + file. (9/22/99, MJF) + +pkg/images/imutil/src/t_imarith.x + Added a check for division by zero in the header keywords. + (8/10/99, Valdes) + +pkg/images/imutil/src/t_imreplace.x +pkg/images/imutil/src/imrep.gx +pkg/images/imutil/imreplace.par +pkg/images/imutil/doc/imreplace.hlp + Added a radius parameter to also replace any pixels within a specified + distance of pixels within the replacement window. (12/11/97, Valdes) + +===== +V2.11 +===== +=============================== +Package Reorganization +=============================== + +pkg/images/imarith/t_imsum.x +pkg/images/imarith/t_imcombine.x +pkg/images/doc/imsum.hlp +pkg/images/doc/imcombine.hlp + Provided options for USHORT data. (12/10/96, Valdes) + +pkg/images/imarith/icsetout.x +pkg/images/doc/imcombine.hlp + A new option for computing offsets from the image WCS has been added. + (11/30/96, Valdes) + +pkg/images/imarith/t_imcombine.x +pkg/images/imarith/icombine.gx + Changed the error checking to catch additional errors relating to too + many files. (11/12/96, Valdes) + +pkg/images/imarith/icsort.gx + There was an error in the ic_2sort routine when there are exactly + three images that one of the explicit cases did not properly keep + the image identifications. See buglog 344. (8/1/96, Valdes) + +pkg/images/filters/median.x + The routine mde_yefilter was being called with the wrong number of + arguments. + (7/18/96, Davis) + +pkg/images/imarith/t_imcombine.x +pkg/images/imarith/icombine.gx +pkg/images/imarith/icimstack.x + +pkg/images/imarith/iclog.x +pkg/images/imarith/mkpkg +pkg/images/doc/imcombine.hlp + The limit on the maximum number of images that can be combined, set by + the maximum number of logical file descriptors, has been removed. If + the condition of too many files is detected the task now automatically + stacks all the images in a temporary image and then combines them with + the project option. + (5/14/96, Valdes) + +pkg/images/geometry/xregister/rgxfit.x + Changed several Memr[] references to Memi[] in the rg_fit routine. + This bug was causing a floating point error in the xregister task + on the Dec Alpha if the coords file was defined, and could potentially + cause problems on other machines. + (Davis, April 3, 1996) + +pkg/images/geometry/t_geotran.x +pkg/images/geometry/geograph.x +pkg/images/doc/geomap.hlp + Corrected the definition of skew in the routines which compute a geometric + interpretation of the 6-coefficient fit, which compute the coefficients + from the geometric parameters, and in the relevant help pages. + (2/19/96, Davis) + +pkg/images/median.par +pkg/images/rmedian.par +pkg/images/mode.par +pkg/images/rmode.par +pkg/images/fmedian.par +pkg/images/frmedian.par +pkg/images/fmode.par +pkg/images/frmode.par +pkg/images/doc/median.hlp +pkg/images/doc/rmedian.hlp +pkg/images/doc/mode.hlp +pkg/images/doc/rmode.hlp +pkg/images/doc/fmedian.hlp +pkg/images/doc/frmedian.hlp +pkg/images/doc/fmode.hlp +pkg/images/doc/frmode.hlp +pkg/images/filters/t_median.x +pkg/images/filters/t_rmedian.x +pkg/images/filters/t_mode.x +pkg/images/filters/t_rmode.x +pkg/images/filters/t_fmedian.x +pkg/images/filters/t_frmedian.x +pkg/images/filters/t_fmode.x +pkg/images/filters/t_frmode.x + Added a verbose parameter to the median, rmedian, mode, rmode, fmedian, + frmedian, fmode, and frmode tasks. (11/27/95, Davis) + +pkg/images/geometry/doc/geotran.hlp + Fixed an error in the help page for geotran. The default values for + the xscale and yscale parameters were incorrectly listed as INDEF, + INDEF instead of 1.0, 1.0. (11/14/95, Davis) + +pkg/images/imarith/icpclip.gx + Fixed a bug where a variable was improperly used for two different + purposes causing the algorithm to fail (bug 316). (10/19/95, Valdes) + +pkg/images/doc/imcombine.hlp + Clarified a point about how the sigma is calculated with the SIGCLIP + option. (10/11/95, Valdes) + +pkg/images/imarith/icombine.gx + To deal with the case of readnoise=0. and image data which has points with + negative mean or median and very small minimum readnoise is set + internally to avoid computing a zero sigma and dividing by it. This + applies to the noise model rejection options. (8/11/95, Valdes) + +pkg/images/frmedian.hlp +pkg/images/frmode.hlp +pkg/images/rmedian.hlp +pkg/images/rmode.hlp +pkg/images/frmedian.par +pkg/images/frmode.par +pkg/images/rmedian.par +pkg/images/rmode.par +pkg/images/filters/frmedian.h +pkg/images/filters/frmode.h +pkg/images/filters/rmedian.h +pkg/images/filters/rmode.h +pkg/images/filters/t_frmedian.x +pkg/images/filters/t_frmode.x +pkg/images/filters/t_rmedian.x +pkg/images/filters/t_rmode.x +pkg/images/filters/frmedian.x +pkg/images/filters/frmode.x +pkg/images/filters/rmedian.x +pkg/images/filters/rmode.x +pkg/images/filters/med_utils.x + Added new ring median and modal filtering tasks frmedian, rmedian, + frmode, and rmode to the images package. + (6/20/95, Davis) + +pkg/images/fmedian.hlp +pkg/images/fmode.hlp +pkg/images/median.hlp +pkg/images/mode.hlp +pkg/images/fmedian.par +pkg/images/fmode.par +pkg/images/median.par +pkg/images/mode.par +pkg/images/filters/fmedian.h +pkg/images/filters/fmode.h +pkg/images/filters/median.h +pkg/images/filters/mode.h +pkg/images/filters/t_fmedian.x +pkg/images/filters/t_fmode.x +pkg/images/filters/t_median.x +pkg/images/filters/t_mode.x +pkg/images/filters/fmedian.x +pkg/images/filters/fmode.x +pkg/images/filters/median.x +pkg/images/filters/mode.x +pkg/images/filters/fmd_buf.x +pkg/images/filters/fmd_hist.x +pkg/images/filters/fmd_maxmin.x +pkg/images/filters/med_buf.x +pkg/images/filters/med_sort.x + Added minimum and maximum good data parameters to the fmedian, fmode, + median, and mode filtering tasks. Removed the 64X64 kernel size limit + in the median and mode tasks. Replaced the common blocks with structures + and .h files. + (6/20/95, Davis) + +pkg/images/geometry/t_geotran.x +pkg/images/geometry/geotran.x +pkg/images/geometry/geotimtran.x + Fixed a bug in the buffering of the x and y coordinate surface interpolants + which can cause a memory corruption error if, nthe nxsample or nysample + parameters are > 1, and the nxblock or nyblock parameters are less + than the x and y dimensions of the input image. Took the opportunity + to clean up the code. + (6/13/95, Davis) + +======= +V2.10.4 +======= + +pkg/images/geometry/t_geomap.x + Corrected a harmless typo in the code which determines the minimum + and maximum x values and improved the precision of the test when the + input is double precision. + (4/18/95, Davis) + +pkg/images/doc/fit1d.hlp + Added a description of the interactive parameter to the fit1d help page. + (4/17/95, Davis) + +pkg/images/imarith/t_imcombine.x + If an error occurs while opening an input image header the error + recovery will close all open images and then propagate the error. + For the case of running out of file descriptors with STF format + images this will allow the error message to be printed rather + than the error code. (4/3/95, Valdes) + +pkg/images/geometry/xregister/t_xregister.x + Added a test on the status code returned from the fitting routine so + the xregister tasks does not go ahead and write an output image when + the user quits the task in in interactive mode. + (3/31/95, Davis) + +pkg/images/imarith/icscale.x +pkg/images/doc/imcombine.hlp + The behavior of the weights when using both multiplicative and zero + point scaling was incorrect; the zero levels have to account for + the scaling. (3/27/95, Valdes) + +pkg/images/geometry/xregister/rgxtools.x + Changed some amovr and amovi calls to amovkr and amovki calls. + (3/15/95, Davis) + +pkg/images/geometry/t_imshift.x +pkg/images/geometry/t_magnify.x +pkg/images/geometry/geotran.x +pkg/images/geometry/xregister/rgximshift.x + The buffering margins set for the bicubic spline interpolants were + increased to improve the flux conservation properties of the interpolant + in cases where the data is undersampled. (12/6/94, Davis) + +pkg/images/xregister/rgxbckgrd.x + In several places the construct array[1++nx-wborder] was being used + instead of array[1+nx-wborder]. Apparently caused by a typo which + propagated through the code, the Sun compilers did not catch this, but + the IBM/RISC6000 compilers did. (11/16/94, Davis) + + +pkg/images/xregister.par +pkg/images/doc/xregister.hlp +pkg/images/geometry/xregister/t_xregister.x +pkg/images/geometry/xregister/rgxcorr.x +pkg/images/geometry/xregister/rgxicorr.x +pkg/images/geometry/xregister/rgxcolon.x +pkg/images/geometry/xregister/rgxdbio.x + The xregister task was modified to to write the output shifts file + in either text database format (the current default) or in simple text + format. The change was made so that the output of xregister could + both be edited more easily by the user and be used directly with the + imshift task. (11/11/94, Davis) + +pkg/images/imfit/fit1d.x + A Memc in the ratio output option was incorrectly used instead of Memr + when the bug fix of 11/16/93 was made. (10/14/94, Valdes) + +pkg/images/geometry/xregister/rgxcorr.x + The procedure rg_xlaplace was being incorrectly declared as an integer + procedure. + (8/1/94, Davis) + +pkg/images/geometry/xregister/rgxregions.x + The routine strncmp was being called (with a missing number of characters + argument) instead of strcmp. This was causing a bus error under solaris + but not sun os whenever the user set regions to "grid ...". (7/27/94 LED) + +pkg/images/tv/imexaine/ierimexam.x + The Gaussian fitting can return a negative sigma**2 which would cause + an FPE when the square root is taken. This will only occur when + there is no reasonable signal. The results of the gaussian fitting + are now set to INDEF if this unphysical result occurs. (7/7/94, Valdes) + +pkg/images/geometry/geofit.x + A routine expecting two char arrays was being passed two real arrays + instead resulting in a segmentation violation if calctype=real + and reject > 0. + (6/21/94, Davis) + +pkg/images/imarith/t_imarith.x + IMARITH now deletes the CCDMEAN keyword if present. (6/21/94, Valdes) + +pkg/images/imarith/icaclip.gx +pkg/images/imarith/iccclip.gx +pkg/images/imarith/icpclip.gx +pkg/images/imarith/icsclip.gx + 1. The restoration of deleted pixels to satisfy the nkeep parameter + was being done inside the iteration loop causing the possiblity + of a non-terminating loop; i.e. pixels are rejected, they are + restored, and the number left then does not statisfy the termination + condition. The restoration step was moved following the iterative + rejection. + 2. The restoration was also incorrectly when mclip=no and could + lead to a segmentation violation. + (6/13/94, Valdes) + +pkg/images/geometry/xregister/rgxicorr.x + The path names to the xregister task interactive help files was incorrect. + (6/13/94, Davis) + +pkg/images/imarith/iccclip.gx +pkg/images/imarith/icsclip.gx + Found and fixed another typo bug. (6/7/94, Valdes/Zhang) + +pkg/images/imarith/icscale.x + The sigma scaling flag, doscale1, would not be set in the case of + a mean offset of zero though the scale factors could be different. + (5/25/94, Valdes/Zhang) + +pkg/images/imarith/icsclip.gx + There was a missing line: l = Memi[mp1]. (5/25/94, Valdes/Zhang) + +pkg/images/imarith/icaclip.gx +pkg/images/imarith/iccclip.gx +pkg/images/imarith/icpclip.gx +pkg/images/imarith/icsclip.gx + The reordering step when a central median is used during rejection + but the final combining is average was incorrect if the number + of rejected low pixels was greater than the number of pixel + number of pixels not rejected. (5/25/94, Valdes) + +pkg/images/geometry/t_geotran.x + In cases where there was no input geomap database, geotran was + unnecessarily overiding the size of the input image requested by the + user if the size of the image was bigger than the default output size + (the size of the output image which would include all the input image + pixels is no user shifts were applied). + (5/10/94, Davis) + +pkg/images/imarith/icscale.x +pkg/images/imarith/t_imcombine.x + 1. There is now a warning error if the scale, zero, or weight type + is unknown. + 2. An sfree was being called before the allocated memory was finished + being used. + (5/2/94, Valdes) + +pkg/images/tv/imexaine/ierimexam.x + For some objects the moment analysis could fail producing a floating + overflow error in imexamine, because the code was trying to use + INDEF as the initial value of the object fwhm. Changed the gaussian + fitting code to use a fraction of the fitting radius as the initial value + for the fitted full-width half-maximum in cases where the moment analysis + cannot compute an initial value. + (4/15/94 LED) + +pkg/images/imarith/iclog.x + Changed the mean, median, mode, and zero formats from 6g to 7.5g to + insure 5 significant digits regardless of signs and decimal points. + (4/13/94, Valdes) + +pkg/images/doc/imcombine.hlp + Tried again to clarify the scaling as multiplicative and the offseting + as additive for file input and for log output. (3/22/94, Valdes) + +pkg/images/imarith/iacclip.gx +pkg/images/imarith/iccclip.gx +pkg/images/imarith/iscclip.gx + The image sigma was incorrectly computed when an offset scaling is used. + (3/8/94, Valdes) + +pkg/images/doc/imcombine.hlp + The MINMAX example confused low and high. (3/7/94, Valdes) + +pkg/images/geometry/t_geomap.x +pkg/images/geometry/geofit.x +pkg/images/geometry/geograph.x + Fixed a bug in the geomap code which caused the linear portion of the transformation + to be computed incorrectly if the x and y fits had a different functional form. + (12/29/93, Davis) + +pkg/images/imarith/t_imcombine.x +pkg/images/imcombine.par +pkg/images/do/imcombine.hlp + The output pixel datatypes now include unsigned short integer. + (12/4/93, Valdes) + +pkg/images/doc/imcombine.hlp + Fixed an error in the example of offseting. (11/23/93, Valdes) + +pkg/images/imfit/fit1d.x + When doing operations in place the input and output buffers are the + same and the difference and ratio operations assumed they were not + causing the final results to be wrong. (11/16/93, Valdes) + +pkg/images/imarith/t_imarith.x +pkg/images/doc/imarith.hlp + If no calculation type is specified then it will be at least real + for a division. Since the output pixel type defaults to the + calculation type if not specified this will also result in a + real output if dividing two integer images. (11/12/93, Valdes) + +pkg/images/imarith/icgrow.gx +pkg/images/imarith/icpclip.gx +pkg/images/imarith/icsclip.gx +pkg/images/imarith/icaclip.gx +pkg/images/imarith/iccclip.gx +pkg/images/imarith/t_imcombine.x +pkg/images/doc/imcombine.hlp + If there were fewer initial pixels than specified by nkeep then the + task would attempt to add garbage data to achieve nkeep pixels. This + could occur when using offsets, bad pixel masks, or thresholds. The + code was changed to check against the initial number of pixels rather + than the number of images. Also a negative nkeep is no longer + converted to a positive value based on the number of images. Instead + it specifies the maximum number of pixels to reject from the initial + set of pixels. (11/8/93, Valdes) + +======= +V2.10.2 +======= + +pkg/images/imarith/icsetout.x + Added MWCS calls to update the axis mapping when using the project + option in IMCOMBINE. (10/8/93, Valdes) + +pkg$images/imarith/icscale.x +pkg$images/doc/imcombine.hlp + The help indicated that user input scale or zero level factors + by an @file or keyword are multiplicative and additive while the + task was using then as divisive and subtractive. This was + corrected to agree with the intend of the documentation. + Also the factors are no longer normalized. (9/24/93, Valdes) + +pkg$images/imarith/icsetout.x + The case in which absolute offsets are specified but the offsets are + all the same did not work correctly. (9/24/93, Valdes) + +pkg$images/imfit/imsurfit.h +pkg$images/imfit/t_imsurfit.x +pkg$images/imfit/imsurfit.x +pkg$images/lib/ranges.x + Fixed two bugs in the imsurfit task bad pixel rejection code. For low + k-sigma rejections factors the bad pixel list could overflow resulting + in a segmentation violation or a hung task. Overlapping ranges were + not being decoded into a bad pixel list properly resulting in + oscillating bad pixel rejection behavior where certain groups of + bad pixels were alternately being included and excluded from the fit. + Both bugs are fixed in iraf 2.10.3 + (9/21/93, Davis) + +pkg$images/doc/imcombine.hlp + Clarified how bad pixel masks work with the "project" option. + (9/13/93, Valdes) + +pkg$images/imfit/fit1d.x + When the input and output images are the same there was an typo error + such that the output was opened separately but then never unmapped + resulting in the end of the image not being updated. (8/6/93, Valdes) + +pkg$images/imarith/t_imcombine.x + The algorithm for making sure there are enough file descriptors failed + to account for the need to reopen the output image header for an + update. Thus when the number of input images + output images + logfile + was exactly 60 the task would fail. The update occurs when the output + image is unmapped so the solution was to close the input images first + except for the first image whose pointer is used in the new copy of the + output image. (8/4/93, Valdes) + +pkg$images/filters/t_mode.x +pkg$images/filters/t_median.x + Fixed a bug in the error trapping code in the median and mode tasks. + The call to eprintf contained an extra invalid error code agument. + (7/28/93, Davis) + +pkg$images/geometry/geomap.par +pkg$images/geometry/t_geomap.x +pkg$images/geometry/geogmap.x +pkg$images/geometry/geofit.x + Fixed a bug in the error handling code in geomap which was producing + a segmentation violation on exit if the user's coordinate list + had fewer than 3 data points. Also improved the error messages + presented to the user in both interactive and non-interactive mode. + (7/7/93, Davis) + +pkg$images/imarith/icgdata.gx + There was an indexing error in setting up the ID array when using + the grow option. This caused the CRREJECT/CCDCLIP algorithm to + fail with a floating divide by zero error when there were non-zero + shifts. (5/26/93, Valdes) + +pkg$images/imarith/icmedian.gx + The median calculation is now done so that the original input data + is not lost. This slightly greater inefficiency is required so + that an output sigma image may be computed if desired. (5/10/93, Valdes) + +pkg$images/geometry/t_imshift.x + Added support for type ushort to the imshift task in cases where the + pixel shifts are integral. + (5/8/93, Davis) + +pkg$images/doc/rotate.hlp + Fixed a bug in the rotate task help page which implied that automatic + image size computation would occur if ncols or nlines were set no 0 + instead of ncols and nlines. + (4/17/93, Davis) + +pkg$images/imarith/imcombine.gx + There was no error checking when writing to the output image. If + an error occurred (the example being when an imaccessible imdir was + set) obscure messages would result. Errchks were added. + (4/16/93, Valdes) + +pkg$images/doc/gauss.hlp + Fixed 2 sign errors in the equations in the documentation describing + the elliptical gaussian fucntion. + (4/13/92, Davis) + +pkg/images/imutil/t_imslice.x + Removed an error check in the imslice task, which was preventing it from + being used to reduce the dimensionality of images where the length of + the slice dimension is 1.0. + (2/16/83, Davis) + +pkg/images/filters/fmedian.x + The fmedian task was printing debugging information under iraf 2.10.2. + (1/25/93, Davis) + +pkg/images/imarith/icaclip.gx +pkg/images/imarith/iccclip.gx +pkg/images/imarith/icpclip.gx +pkg/images/imarith/icsclip.gx + When using mclip=yes and when more pixels are rejected than allowed by + the nkeep parameter there was a subtle bug in how the pixels are added + back which can result in a segmentation violation. + if (nh == n2) ==> if (nh == n[i]) + (1/20/93, Valdes) + + +======= +V2.10.1 +======= + +pkg/images/imarith/t_imcombine.x +pkg/images/imarith/icaclip.gx +pkg/images/imarith/iccclip.gx +pkg/images/imarith/icgrow.gx +pkg/images/imarith/iclog.x +pkg/images/imarith/icombine.com +pkg/images/imarith/icombine.gx +pkg/images/imarith/icombine.h +pkg/images/imarith/icpclip.gx +pkg/images/imarith/icscale.x +pkg/images/imarith/icsclip.gx +pkg/images/imarith/icsetout.x +pkg/images/imcombine.par +pkg/images/doc/combine.hlp + The weighting was changed from using the square root of the exposure time + or image statistics to using the values directly. This corresponds + to variance weighting. Other options for specifying the scaling and + weighting factors were added; namely from a file or from a different + image header keyword. The \fInkeep\fR parameter was added to allow + controlling the maximum number of pixels to be rejected by the clipping + algorithms. The \fIsnoise\fR parameter was added to include a sensitivity + or scale noise component to the noise model. Errors will now delete + the output image. + (9/30/92, Valdes) + +pkg/images/imutil/imcopy.x + Added a call to flush after the status line printout so that the output + will appear immediately. (8/19/92, Davis) + +pkg/images/filters/mkpkg +pkg/images/filters/t_fmedian.x +pkg/images/filters/fmedian.x +pkg/images/filters/fmd_buf.x +pkg/images/filters/fmd_maxmin.x + The fmedian task could crash with a segmentation violation if mapping + was turned off (hmin = zmin and hmax = zmax) and the input image + contained data outside the range defined by zmin and zmax. (8/18/92, Davis) + +pkg/images/imarith/icaclip.gx +pkg/images/imarith/iccclip.gx +pkg/images/imarith/icpclip.gx +pkg/images/imarith/icsclip.gx + There was a very unlikely possibility that if all the input pixels had + exactly the same number of rejected pixels the weighted average would + be done incorrectly because the dflag would not be set. (8/11/92, Valdes) + +pkg/images/imarith/icmm.gx + This procedure failed to set the dflag resulting in the weighted average + being computed in correctly. (8/11/92, Valdes) + +pkg/images/imfit/fit1d.x + At some point changes were made but not documented dealing with image + sections on the input/output. The changes seem to have left off the + final step of opening the output image using the appropriate image + sections. Because of this it is an error to use an image section + on an input image when the output image is different; i.e. + + cl> fit1d dev$pix[200:400,*] junk + + This has now been fixed. (8/10/92, Valdes) + +pkg/images/imarith/icscales.x + The zero levels were incorrectly scaled twice. (8/10/92, Valdes) + +pkg/images/imarith/icstat.gx + Contained the statement + nv = max (1., (Memi[v2+i] - Memi[v1+i]) / Memi[dv+i] + 1) + which is max(real,int). Changed the 1. to a 1. (8/10/92, Valdes) + +pkg$images/imarith/icaclip.gx +pkg$images/imarith/iccclip.gx +pkg$images/imarith/icsclip.gx + These files contained multiple cases (ten or so) of constructs such as + "max (1., ...)" or "max (0., ...)" where the ... could be either real + or double. In the double cases the DEC compiler complained about a + type mismatch since 1. is real. (8/10/92, Valdes) + +pkg$images/imfit/t_imsurfit.x + Fixed a bug in the section reading code. Imsurfit is supposed to switch + the order of the section delimiters in x and y if x2 < x1 or y2 < 1. + Unfortunately the y test was actually "if (y2 < x1)" instead of + "if (y2 < y1)". Whether or not the code actually works correctly + depends on the value of x1 relative to y2. This bug was not present + in 2.9.1 but is present in subsequent releases. (7/30/92 LED) + +======= +V2.10.1 +======= + +pkg$images/filters/t_gauss.x + The case theta=90 and ratio > 0.0 but < 1.0 was producing an incorrect + convolution if bilinear=yes, because the major axis sigmas being + input along the x and y axes were sigma and ratio * sigma respectively + instead of ratio * sigma and sigma in this case. + +pkg$images/imutil/imcopy.x + Modified imcopy to write its verbose output to STDOUT instead of + STDERR. (6/24/92, Davis) + +pkg$images/imarith/imcombine.gx + The step where impl1$t is called to check if there is enough memory + did not set the return buffer because the values are irrelevant for + this check. However, depending on history, this buffer could have + arbitrary values and later when IMIO attempts to flush this buffer, + at least in the case of image type coersion, cause arithmetic errors. + The fix was to clear the returned buffers. (4/27/92, Valdes) + +pkg$images/imutil/t_imstack.x + Modified the imslice task to read the old and write a new axis map. + (4/23/92, Davis) + +pkg$images/geometry/t_imslice.x + Modified the imslice task to read the old and write a new axis map. + (4/23/92, Davis) + +pkg$images/geometry/t_blkavg.x +pkg$images/geometry/t_blkrep.x + Modified the calls to mw_shift and mw_scale to explicitly set the + number of logical axes instead of using the default of 0. + (4/23/92, Davis) + +pkg$images/geometry/t_imtrans.x + Modified imtranspose so that it correctly picks up the axis map + and writes it to the output image wcs. (4/23/92, Davis) + +pkg$images/register.par +pkg$images/geotran.par +pkg$images/doc/register.hlp +pkg$images/doc/geotran.hlp + Changed the default values of the parameters xscale and yscale in + the register and geotran tasks from INDEF to 1.0 (4/23/92, Davis) + +pkg$images/geometry/t_imtrans.x +pkg$images/doc/imtranspose.hlp + Modified the imtranspose task so it does a true transpose of the + axes instead of simply modifying the lterm. (4/8/92, Davis) + +pkg$images/iminfo/listpixels.x + Added the formats parameter for formatting the output pixel coordinates + to the listpixels task. These formats take precedence over the formats + stored in the WCS in the image header and the previous default format. + (4/7/92, Davis) + +pkg$images/imutil/t_imstack.x + Added wcs support to the imstack task. (4/2/92, Davis) + +pkg$images/iminfo/listpixels.x + Modified listpixels so that it will work correctly if the dimension + of the wcs is less than the dimension of the image. (3/16/92, Davis) + +pkg$images/geometry/t_geotran.x + Modified the rotate, imlintran, register and geotran tasks wcs updating + code to deal correclty with dimensionally reduced data. (3/16/92, Davis) + +pkg$images/imarith/icalip.gx +pkg$images/imarith/icclip.gx +pkg$images/imarith/ipslip.gx +pkg$images/imarith/icslip.gx +pkg$images/imarith/icmedian.gx + The median calculation with an even number of points for short data + could overflow (addition of two short values) and be incorrect. + (3/16/92, Valdes) + +pkg$images/geometry/t_blkavg.x +pkg$images/geometry/t_blkrep.x + 1. Improved the precision of the blkavg task wcs updating code. + 2. Changed the blkrep task wcs updating code so that it is consistent + with blkavg. This means that a blkrep command followed by a blkavg + command or vice versa will return the original coordinate system + to within machine precision. (3/16/92, Davis) + +pkg$images/iminfo/listpixels.x + Modified listpixels to print out an error if it could not open the + wcs in the image. (3/15/92, Davis) + +pkg$images/geometry/t_magnify.x + Fixed a bug in the magnify task wcs updating code which was not + working correctly for dimensionally reduced images. (3/15/92, Davis) + +pkg$images/geometry/t_imtrans.x + Fixed a bug in the imtranspose task wcs updating code which was not + working correctly for dimensionally reduced images. (3/14/92, Davis) + +pkg$images/imarith/icalip.gx +pkg$images/imarith/icclip.gx +pkg$images/imarith/icslip.gx + There was a bug allowing the number of valid pixels counter to become + negative. Also there was a step which should not be done if the + number of valid pixels is less than 1; i.e. all pixels rejected. + A test was put in to skip this step. (3/13/92, Valdes) + +pkg$images/iminfo/t_imslice.x +pkg$images/doc/imslice.hlp + Added wcs support to the imslice task. + (3/12/92, Davis) + +pkg$images/iminfo/t_imstat.x + Fixed a bug in the code for computing the standard deviation, kurtosis, + and skew, wherein precision was being lost because two of the intermediate + variables in the computation were real instead of double precision. + (3/10/92, Davis) + +pkg$images/iminfo/listpixels.x + 1. Modified listpixels task to use the MWCS axis "format" attributes + if they are present in the image header. + 2. Added support for dimensionally reduced images, i.e. + images which are sections of larger images and whose coordinate + transformations depend on the reduced axes, to the listpixels task. + (3/6/92, Davis) + +pkg$images/imarith/t_imcombine.x +pkg$images/imarith/icsetout.x + Changed error messages to say IMCOMBINE instead of ICOMBINE. + (3/2/92, Valdes) + +pkg$images/imarith/iclog.x + Added listing of read noise and gain. (2/10/92, Valdes) + +pkg$images/imarith/icscale.x +pkg$images/imarith/icpclip.gx + 1. Datatype declaration for asumi was incorrect. + 2. Reduced the minimum number of images allowed for PCLIP to 3. + (1/7/92, Valdes) + +pkg$images/imarith/icgrow.gx + The first pixel to be checked was incorrectly set to 0 instead of 1 + resulting in a segvio when using the grow option. (12/6/91, Valdes) + +pkg$images/imarith/icgdata.gx +pkg$images/imarith/icscale.x + Fixed datatype declaration errors found by SPPLINT. (11/22/91, Valdes) + +pkg$images/iminfo/t_imstat.x + Fixed a bug in the kurtosis computation found by ST. + (Davis 10/11/91) + +pkg$images/iminfo/t_imstat.x +pkg$images/doc/imstat.hlp + Corrected a bug in the mode computation in imstatistics. The parabolic + interpolation correction for computing the histogram peak was being + applied in the wrong direction. Note that for dev$pix the wrong answer + is actually closer to the expected answer than the correct answer + due to binning effects. + (Davis 9/24/91) + +pkg$images/filters/t_gauss.x + The code which computes the gaussian kernel was producing a divide by + zero error if ratio=0.0 and bilinear=yes (2.10 version only). + (Davis 9/18/91) + +pkg$images/doc/magnify.hlp + Corrected a bug in the magnify help page. + (Davis 9/18/91) + +pkg$images/imarith/icsclip.gx +pkg$images/imarith/icaclip.gx +pkg$images/imarith/iccclip.gx + There was a typo, Memr[d[k]+k] --> Memr[d[j]+k]. (9/17/91, Valdes) + +pkg$images/imarith/icstat.gx +pkg$images/imarith/icmask.x + The offsets were used improperly in computing image statistics. + (Valdes, 9/17/91) + +pkg$images/geometry/t_imshift.x + The shifts file pointer was not being correctly initialized to NULL + in the case where no shifts file was declared. When the task + was invoked repeatedly from a script, this could result in an array being + referenced, for which space had not been previously allocated. + (Davis 7/29/91) + +pkg$images/imarith/imc* - +pkg$images/imarith/ic* + +pkg$images/imarith/t_imcombine.x +pkg$images/imarith/mkpkg +pkg$images/imarith/generic/mkpkg +pkg$images/imcombine.par +pkg$images/doc/imcombine.hlp + Replaced old version of IMCOMBINE with new version supporting masks, + offsets, and new algorithms. (Valdes 7/19/91) + +pkg$images/iminfo/imhistogram.x + Imhistogram has been modified to print the value of the middle of + histogram bin instead of the left edge if the output type is list + instead of plot. (Davis 6/11/91) + +pkg$images/t_imsurfit.x + Modified the sections file reading code to check the order of the + x1 x2 y1 y2 parameters and switch (x1,x2) or (y1,y2) if x2 < x1 or + y2 < y1 respectively. (Davis 5/28/91) + +pkg$images/listpixels.par +pkg$images/iminfo/listpixels.x +pkg$images/doc/listpixels.hlp + Modified the listpixels task to be able to print the pixel coordinates + in logical, physical or world coordinates. The default coordinate + system is still logical as before. (Davis 5/17/91) + +pkg$images/images.par +pkg$images/doc/minmax.hlp +pkg$images/imutil/t_minmax.x +pkg$images/imutil/minmax.x + Minmax was modified to do the minimum and maximum values computations + in double precision or complex instead of real if the input image + pixel type is double precision or complex. Note that the minimum and + maximum header values are still stored as real however. + (Davis 5/16/91) + +imarith/t_imarith.x + There was a missing statement to set the error flag if the image + dimensions did not match. (5/14/91, Valdes) + +doc/imarith.hlp + Fixed some formatting problems in the imarith help page. (5/2/91 Davis) + +imarith$imcombine.x + Changed the order in which images are unmapped to have the output images + closed last. This is to allow file descriptors for the temporary image + used when updating STF headers. (4/22/91, Valdes) + +pkg$images/geometry/t_blkavg.x +pkg$images/geometry/blkavg.gx +pkg$images/geometry/blkavg.x + The blkavg task was partially modified to support complex image data. + The full modifications cannot be made because of an error in abavx.x + and the missing routine absux.x. + (4/18/91 Davis) + +pkg$images/geometry/geofit.x + The x and y fits cross-terms switch was not being set correctly to "yes" + in the case where xxorder=2 and xyorder=2 or in the case where yxorder=2 + and yyorder=2. + (4/9/91 Davis) + +pkg$images/geometry/geogmap.x + Modified the line which prints the geometric parameters to use the + variable name xshift and yshift instead of delx and dely. + (4/9/91 Davis) + +pkg$images/imfit/imsurfit.x + Fixed a bug in the pixel rejection code which occurred when upper was > + 0.0 and lower = 0.0 or lower > 0 and upper = 0.0. The problem was that + the code was simply setting the rejection limits to the computed sigma + times the upper and lower parameters without checking for the 0.0 + condition first. In the first case this results in all points with + negative residuals being rejected and in the latter all points with + positive residuals are rejected. + (2/25/91 Davis) + +pkg$images/doc/hedit.hlp +pkg$images/doc/hselect.hlp +pkg$images/doc/imheader.hlp +pkg$images/doc/imgets.hlp + Added a reference to imgets in the SEE ALSO sections of the hedit and + hselect tasks. + Added a reference to hselect and hedit in the SEE ALSO sections of the + imheader and imgets tasks. + (2/22/91 Davis) + +pkg$images/gradient.hlp +pkg$images/laplace.hlp +pkg$images/gauss.hlp +pkg$images/convolve.hlp +pkg$images/gradient.par +pkg$images/laplace.par +pkg$images/gauss.par +pkg$images/convolve.par +pkg$images/t_gradient.x +pkg$images/t_laplace.x +pkg$images/t_gauss.x +pkg$images/t_convolve.x +pkg$images/convolve.x +pkg$images/xyconvolve.x +pkg$images/radcnv.x + The convolution operators were modified to run more efficiently in + certain cases. The LAPLACE task was modified to make use of the + radial symmetry of the convolution kernel in the y direction as well + as the x direction resulting in a modest speedup in execution time. + A new parameter bilinear was added to the GAUSS and CONVOLVE tasks. + By default and if appropriate mathematically, GAUSS now makes use of + the bilinearity or separability of the Gaussian function, + to separate the 2D convolution in x and y into two equivalent + 1D convolutions in x and y, resulting in a considerable speedup + in execution time. Similarly the user can know program CONVOLVE to + compute a bilinear convolution instead of a full 2D 1 if appropriate. + (1/29/91 Davis) + +pkg$images/filters/t_convolve.x + CONVOLVE was not decoding the legal 1D kernel "1.0 2.0 1.0" correctly + although the alternate form "1.0 2.0 1.0;" worked. Leading + blanks in string kernels as in for example " 1.0 2.0 1.0" also generated + and error. Fixed these bugs and added some additional error checking code. + (11/28/90 Davis) + +pkg$images/doc/gauss.hlp + Added a detailed mathematical description of the gaussian kernel used + by the GAUSS task to the help page. + +pkg$images/images.hd +pkg$images/rotate.cl +pkg$images/imlintran.cl +pkg$images/register.cl +pkg$images/register.par + Added src="script file name" entries to the IMAGES help database + for the tasks ROTATE, IMLINTRAN, and REGISTER. Changed the CL + script for REGISTER to a procedure script to remove the ugly + local variable declarations. Added a few comments to the scripts. + (12/11/90, Davis) + +pkg$images/iminfo/imhistogram.x + Added a new parameter binwidth to imhistogram. If binwidth is defined + it determines the histogram resolution in intensity units, otherwise + nbins determines the resolution as before. (10/26/90, Davis) + +pkg$images/doc/sections.hlp + Clarified what is meant by an image template and that the task itself + does not check whether the specified names are actually images. + The examples were improved. (10/3/90, Valdes) + +pkg$images/doc/fit1d.hlp + Changed lines to columns in example 2. (10/3/90, Valdes) + +pkg$images/imarith/imcscales.x + When an error occured while parsing the mode section the untrapped error + caused further problems downstream. Because it would require adding + lots of errchks to cause the program to gracefully abort I instead made + it a warning. (10/2/90, Valdes) + +pkg$images/imutil/hedit.x + Hedit was computing but not using min_lenarea. If the user specified + a min_lenuserarea greater than the default of 28800 then the default + was being used instead of the larger number. + +pkg$imarith/imasub.gx + The case of subtracting an image from the constant zero had a bug + which is now fixed. (8/14/90, Valdes) + +pkg$images/t_imtrans.x + Modified the imtranspose task so it will work on type ushort images. + (6/6/90 Davis) + +pkg$images + Added world coordinate system support to the following tasks: imshift, + shiftlines, magnify, imtranspose, blkrep, blkavg, rotate, imlintran, + register and geotran. The only limitation is that register and geotran + will only support simple linear transformations. + (2/24/90 Davis) + +pkg$images/geometry/geotimtran.x + Fixed a problem in the boundary extension "reflect" option code for small + images which was causing odd values to be inserted at the edges of the + image. + (2/14/90 Davis) + +pkg$images/iminfo/imhistogram.x + A new parameter "hist_type" was added to the imhistogram task giving + the user the option of plotting the integral, first derivative and + second derivative of the histogram as well as the normal histogram. + Code was contributed by Rob Seaman. + (2/2/90 Davis) + +pkg$images/geometry/geogmap.x + The path name of the help file was being erroneously renamed with + the result that when users ran the double precision version of the + code they could not find the help file. + (26/1/90 Davis) + +pkg$images/filters/t_boxcar.x,t_convolve.x + Added some checks for 1-D images. + (1/20/90 Davis) + +pkg$images/iminfo/t_imstat.x,imstat.h + Made several minor bug fixes and alterations in the imstatistics task + in response to user complaints and suggestions. + + 1. Changed the verbose parameter to the format parameter. If format is + "yes" (the default) then the selected fields are printed in fixed format + with column labels. Other wise the fields are printed in free format + separated by 2 blanks. This fixes the problem of fields running together. + + 2. Fixed a bug in the code which estimates the median from the image + histogram by linearly interpolating around the midpt of the integrated + histogram. The bug occurred when more than half the pixels were in the + first bin. + + 3. Added a check to ensure that the number of fields did not overflow + the fields array. + + 4. Removed the extraneous blank line printed after the title. + + 5. The pound sign is now printed at the beginning of the column header + string regardless of which field is printed first. In the previous + versions it was only being printed if the image name field was + printed first. + + 6. Changed the name of the median field to midpt in response to user + confusions about how the median is computed. + + (1/20/90, Davis) + +pkg$images/imutil/t_imslice.hlp + The imslice was not correctly computing the number of lines in the + output image in the case where the slice dimension was 1. + (12/4/89, Davis) + +pkg$images/doc/imcombine.hlp + Clarified and documented definitions of the scale, offset, and weights. + (11/30/89, Valdes) + +pkg$images/geometry/geotran.x + High order surfaces of a certain functional form could occasionally + produce out of bounds pixel errors. The bug was caused by not properly + computing the distortion of the image boundary for higher order + surfaces. + (11/21/89, Davis) + +pkg$images/geometry/imshift.x + The circulating buffer space was not being freed after each execution + of IMSHIFT. This did not cause an error in execution but for a long + list of frames could result in alot of memory being tied up. + (10/25/89, Davis) + +pkg$images/imarith/t_imarith.x + IMARITH is not prepared to deal with images sections in the output. + It used to look for '[' to decide if the output specification included + and image section. This has been changed to call the IMIO procedure + imgsection and check if a non-null section string is returned. + Thus it is up to IMIO to decide what part of the image name is + an image section. (9/5/89, Valdes) + +pkg$images/imarith/imcmode.gx + Fixed bug causing infinite loop when computing mode of constant value + section. (8/14/89, Valdes) + +==== +V2.8 +==== + +pkg$images/iminfo/t_imstat.x + Davis, Jun 15, 1989 + Added a couple of switches to that skew and kurtosis are not computed + if they are not to be printed. + +pkg$images/iminfo/t_imstat.x + Davis, Jun 14, 1989 + A simple mod was made to the skew and kurtosis computation to avoid + divide by zero errors in case of underflow. + +pkg$images/imutil/chpixtype.par + Davis, Jun 13, 1989 + The parameter file has been modified to accept an output pixel + type of ushort. + +pkg$images/imarith/imcombine.gx + Valdes, Jun 2, 1989 + A new scheme to detect file errors is now used. + +pkg$images/imfit/t_imsurfit.x + Davis, Jun 1, 1989 + 1. If the user set regions = "sections" but the sections file + did not exist the task would go into an infinite loop. The problem + was a missing error check on the open statement. + +pkg$images/iminfo/imhistogram.x,imhistogram.par + Davis, May 31, 1989 + A new version of imhistogram has been installed. These mods have + been made over a period of a month by Doug Tody and Rob Seaman. + The mods include + 1. An option to turn off log scaling of the y axis of the histogram plot. + 2. A new autoscale parameter which avoids aliasing problems for integer + data. + 3. A new parameter top_close which resolves the ambiguity in the top + bin of the histogram. + +pkg$images/imarith/imcombine.gx + Valdes, May 9, 1989 + Because a file descriptor was not reserved for string buffer operations + and a call to stropen in cnvdate was not error checked the task would + hang when more than 115 images were combined. Better error checking + was added and now an error message is printed when the maximum number + of images that can be combined is exceeded. + +pkg$images/imarith/t_imarith.x + Valdes, May 6, 1989 + Operations in which the output image has an image section are now + skipped with a warning message. + +pkg$images/imarith/sigma.gx +pkg$images/imarith/imcmode.gx + Valdes, May 6, 1989 + 1. The weighted sigma was being computed incorrectly. + 2. The argument declarations were wrong for integer input images. + Namely the mean vector is always real. + 3. Minor change to imcmode.gx to return correct datatype. + +pkg$images/imstack,imslice + Davis, April 1, 1989 + The proto images tasks imstack and imslice have been moved from the + proto package to the images package. Imstack is unchanged except that + it now supports the image data types USHORT and COMPLEX. Imslice has + been modified to allow slicing along any dimension of the image instead + of just the highest dimension. + +pkg$images/imstatistics. + Davis, Mar 31, 1989 + 1. A totally new version of the imstatistics task has been written + and replaces the old version. The new task allows the user to select + which statistical parameters to compute and print. These include + the mean, median, mode, standard deviation, skew, kurtosis and the + minimum and maximum pixel values. + +pkg$images/imhistogram.par +pkg$images/iminfo/imhistogram.x +pkg$images/doc/imhistogram.hlp + Davis, Mar 31, 1989 + 1. The imhistogram task has been modified to plot "box" style histograms + as well as "line" type histograms. Type "line" remains the default. + +pkg$images/geometry/geotran.par,register.par,geomap.par +pkg$images/doc/geomap.hlp,register.hlp,geotran.hlp + Davis, Mar 6, 1989 + 1. Improved the parameter prompting in GEOMAP, REGISTER and GEOTRAN + and improved the help pages. + 2. Changed GEOMAP database quantities "xscale" and "yscale" to "xmag" + and "ymag" for consistency . Geotran was changed appropriately. + +pkg$images/imarith/imcmode.gx + For short data a short variable was wraping around when there were + a significant number of saturated pixels leading to an infinite loop. + The variables were made real regardless of the image datatype. + (3/1/89, Valdes) + +pkg$images/imutil/imcopy.x + Davis, Feb 28, 1989 + 1. Added support for type USHORT to the imcopy task. This is a merged + ST modification. + +pkg$images/imarith/imcthreshold.gx +pkg$images/imcombine.par +pkg$images/doc/imcombine.hlp +pkg$images/imarith/imcscales.x + Valdes, Feb 16, 1989 + 1. Added provision for blank value when all pixels are rejected by the + threshold. + 2. Fixed a bug that was improperly scaling images in the threshold option. + 3. The offset printed in the log now has the opposite sign so that it + is the value "added" to bring images to a common level. + +pkg$images/imfit/imsurfit.x + Davis, Feb 23, 1989 + Fixed a bug in the median fitting code which could cause the porgram + to go into an infinite loop if the region to be fitted was less than + the size of the whole image. + +pkg$images/geometry/t_magnify.x + Davis, Feb 16, 1989 + Modified magnify to work on 1D images as well as 2D images. The + documentation has been updated. + +pkg$images/geometry/t_geotran.x + Davis, Feb 15, 1989 + Modified the GEOTRAN and REGISTER tasks so that they can handle a list + of transform records one for each input image. + +pkg$images/imarith/imcmode.gx + Valdes, Feb 8, 1989 + Added test for nx=1. + +pkg$images/imarith/t_imcombine.x + Valdes, Feb 3, 1989 + The test for the datatype of the output sigma image was wrong. + +pkg$images/iminfo/listpixels.x,listpixels.par + Davis, Feb 6, 1989 + The listpixels task has been modified to print out the pixels for a + list of images instead of a single image only. A title line for each + image listed can optionally be printed on the standard output if + the new parameter verbose is set to yes. + +pkg$images/geometry/t_imshift.x + Davis, Feb 2, 1989 + Added a new parameter shifts_file to the imshift task. Shifts_file + is the name of a text file containing the the x and yshifts for + each input image to be shifted. The number of input shifts must + equal the number of input images. + +pkg$images/geometry/t_geomap.x + Davis, Jan 17, 1989 + Added an error message for the case where the coordinates is empty + of there are no points in the specified data range. Previously the + task would proceed to the next coordinate file without any message. + +pkg$images/geometry/t_magnify.x + Davis, Jan 14, 1989 + Added the parameter flux conserve to the magnify task to bring it into + line with all the other geometric transformation tasks. + +pgk$images/geometry/geotran.x,geotimtran.x + Davis, Jan 2, 1989 + A bug was fixed in the flux conserve code. If the x and y reference + coordinates are not in pixel units and are not 1 then + the computed flux per pixel was too small by xscale * yscale. + +pkg$images/filters/acnvrr.x,convolve.x,boxcar.x,aboxcar.x + Davis, Dec 27, 1988 + I changed the name of the acnvrr procedure to cnv_radcnvr to avoid + a name conflict with a vops library procedure. This only showed + up when shared libraries were implemented. I also changed the name + of the aboxcarr procedure to cnv_aboxr to avoid conflict with the + vops naming conventions. + +pkg$images/imarith/imcaverage.gx + Davis, Dec 22, 1988 + Added an errchk statement for imc_scales and imgnl$t to stop the + program bombing with segmentation violations when mode <= 0. + +pkg$images/imarith/imcscales.x + Valdes, Dec 8, 1988 + 1. IMCOMBINE now prints the scale as a multiplicative quantity. + 2. The combined exposure time was not being scaled by the scaling + factors resulting in a final exposure time inconsistent with the + data. + +pkg$images/iminfo/imhistogram.x + Davis, Nov 30, 1988 + Changed the list+ mode so that bin value and count are printed out instead + of bin count and value. This makes the plot and list modes compatable. + +pkg$images/iminfo/t_imstat.x + Davis, Nov 17, 1988 + Added the n=n+1 back into the inner loop of imstat. + +pkg$images/geotran.par,register.par + Davis, Nov 11 , 1988 + Fixed to glaring errors in the parameter files for register and geotran. + Xscale and yscale were described as pixels per reference unit when + they should be reference units per pixel. The appropriate bug fix has been + made. + +pkg$images/geometry/t_geotran.x + Davis, November 7, 1988 + The routine gsrestore was not being error checked. If either of the + input x or y coordinate surface was linear and the other was not, + the message came back GSRESTORE: Illegal x coordinate. This bug has + been fixed. + +pkg$images/imarith/imcombine.gx + Valdes, October 19, 1988 + A vops clear routine was not called generically causing a crash with + double images. + +pkg$images/filters/t_fmedian.x,t_median.x,t_fmode.x,t_mode.x,t_gradient.x + t_gauss.x,t_boxcar.x,t_convolve.x,t_laplace.x + Davis, October 4, 1988 + I fixed a bug in the error handling code for the filters tasks. If + and error occurred during task execution and the input image name was + the same as the output image name then the input image was trashed. + +pkg$images/imarith/imcscales.gx + Valdes, September 28, 1988 + It is now an error for the mode to be nonpositive when scaling or weighting. + +pkg$images/imarith/imcmedian.gx + Valdes, August 16, 1988 + The median option was selecting the n/2 value instead of (n+1)/2. Thus, + for an odd number of images the wrong value was being determined for the + median. + +pkg$images/geometry/t_imshift.x + Davis, August 11, 1988 + 1. Imshift has been modified to uses the optimized code if nearest + neighbour interpolation is requested. A nint is done on the shifts + before calling the quick shift routine. + 2. If the requested pixel shift is too large imshift will now + clean up any pixelless header files before continuing execution. + +pkg$images/geometry/blkavg.gx + Davis, July 13, 1988 + Blkavg has been fixed so that it will work on 1D images. + +pkg$images/geometry/t_imtrans.x,imtrans.x + Davis, July 12, 1988 + Imtranspose has been modified to work on complex images. + +pkg$images/imutil/t_chpix.x + Davis, June 29, 1988 + A new task chpixtype has been added to the images package. Chpixtype + changes the pixel types of a list of images to a specified output pixel + type. Seven data types are supported "short", "ushort", "int", "long" + "real" and "double". + +pkg$images/geometry/rotate.cl,imlintran.cl,t_geotran.x + Davis, June 10, 1988 + The rotate and imlintran scripts have been rewritten to use procedure + scripts. This removes all the annoying temporary cl variables which + appear when the user does an lpar. In previous versions of these + two tasks the output was restricted to being the same size as the input + image. This is still the default case, but the user can now set the + ncols and nrows parameters to the desired output size. I ncols or nlines + < 0 then then the task compute the output image size required to contain + the whole input image. + +pkg$images/filters/t_convolve.x,t_laplace.x,t_gradient.x,t_gauss.x,convolve.x + Davis, June 1, 1988 + The convolution operators laplace, gauss and convolve have been modified + to make use of radial symmetry in the convolution kernel. In gauss and + laplace the change is transparent to the user. For the convolve operator + the user must indicate that the kernel is radially symmetric by setting + the parameter radsym. For kernels of 7 by 7 or greater the speedup + in timings is on the order of 30% on the Vax 750 with the fpa. + +pkg$images/imarith/imcmode.gx + Valdes, Apr 11, 1988 + 1. The use of a mode sections was handled incorrectly. + +pkg$images/imfit/fit1d.x + Valdes, Jan 4, 1988 + 1. Added an error check for a failure in IMMAP. The missing error check + caused FIT1D to hang when a bad input image was specified. + +pkg$images/magnify.par +pkg$images/imcombine.par +pkg$images/imarith/imcmode.gx +pkg$images/doc/imarith.hlp + Valdes, Dec 7, 1987 + 1. Added option list to parameter prompts. + 2. Fixed minor typo in help page + 3. The mode calculation in IMCOMBINE would go into an infinite loop + if all the pixel values were the same. If all the pixels are the + same them it skips searching for the mode and returns the constant + number. + +pkg$images/geometry/geotimtran.x + Davis, Nov 25, 1987 + 1. A bug in the boundary extension = wrap option was found in the + IMLINTRAN task. The problem occured in computing values for out of + bounds pixels in the range 0.0 < x < 1.0, ncols < x < ncols + 1.0, + 0.0 < y < 1.0 and nlines < y < nlines + 1. The computed coordinates + were falling outside the boundaries of the interpolation array. + +pkg$images/geometry/t_geomap.x,geograph.x + Davis, Nov 19, 1987 + 1. The geomap task now writes the name of the output file into the database. + 2. Rotation angles of 360. degrees have been altered to 0 degrees. + +pkg$images/imfit/t_imsurfit.x,imsurfit.x +pkg$images/lib/ranges.x + Davis, Nov 2, 1987 + A bug in the regions fitting option of the IMSURFIT task has been found + and fixed. This bug would occur when the user set the regions parameter + to sections and then listed section which overlapped each other. The + modified ranges package was not handling the overlap correctly and + computing a number of points which was incorrect. + +pkg$images/imarith/* + + Valdes, Sep 30, 1987 + The directory was reorganized to put generic code in the subdirectory + generic. + + A new task called IMCOMBINE has been added. It provides for combining + images by a number of algorithms, statistically weighting the images + when averaging, scaling or offsetting the images by the exposure time + or image mode before combining, and rejecting deviant pixels. It is + almost fully generic including complex images and works on images of + any dimension. + +pkg$images/geometry/geotran.x + Davis, Sept 3, 1987 + A bug in the flux conserving algorithm was found in the geotran code. + The symptom was that the flux of the output image occasionally was + negative. This would happen when two conditions were met, the transformation + was of higher order than a simple rotation, magnification, translation + and an axis flip was involved. The mathematical interpretation of this + bug is that the coordinate surface had turned upside down. The solution + for people running systems with this bug is to multiply there images + by -1. + +pkg$images/imfit/imsurfit.h,t_imsurfit.x + Davis, Aug 6, 1987 + A new option was added to the parameter regions in the imsurfit task. + Imsurfit will now fit a surface to a single circular region defined + by an x and y center and a radius. + +pkg$images/geometry/geotimtran.x + Davis, Jun 15, 1987 + Geotran and register were failing when the output image number of rows + and columns was different from the input number of rows and columns. + Geotran was mistakenly using the input images sizes to determine the + number of output lines that should be produced. The same problem occurred + when the values of the boundary pixels were being computed. The program + was using the output image dimensions to compute the boundary pixels + instead of the input image dimensions. + +pkg$images/geometry/geofit.x,geogmap.x + Davis, Jun 11, 1987 + A bug in the error checking code in the geomap task was fixed. The + condition of too few points for a reasonable was not being trapped + correctly. The appropriate errchk statements were added. + +pkg$images/geomap.par + Davis, Jun 10, 1987 + The default fitting function was changed to polynomial. This will satisfy + most users who wish to do shifts, rotations, and magnifications and + avoid the neccessity of correctly setting the xmin, xmax, ymin, and ymax + parameters. For the chebyshev and legendre polynomial functions these + parameters must be explicitly set. For reference coordinates in pixel + units the normal settings are 1, ncols, 1 and nlines respectively. + +pkg$images/iminfo/hselect.x,imheader.x,images$/imutil/hselect.x + Davis, Jun 8, 1987 + Imheader has been modified to open an image with the default min_lenuserarea + Hselect and hedit will now open the image setting the user area to the + maximum of 28800 chars or the min_lenuser environment variable. + +pkg$images/iminfo/t_imstat.x + Davis, May 22, 1987 + An error in the image minimum computation was corrected. This error + would show up most noiticeably if imstat was run on a 1 pixel image. + The min value would be left set to MAX_REAL. + +pkg$images/filters/mkpkg + Davis, May 22, 1987 + I added mach.h to the dependency file list of t_fmedian.x and + recompiled. The segmentation violations I had been getting in the + program disappeared. + +pkg$images/t_shiftlines.x,shiftlines.x + Davis, April 15, 1987 + 1. I changed the names of the procedures shiftlines and shiftlinesi + to sh_lines and sh_linesi. When the original names were contracted + to 6 letter fortran names they became shifti and shifts which just + so happens to collide with shifti and shifts in the subdirectory + osb. On VMS this was causing problems with the shareable libraries. + If images was linked with -z there was no problem. + +pkg$images/imarith/t_imsum.x + Valdes, March 24, 1987 + 1. IMSUM was failing to unmap images opened to check image dimensions + in a quick first pass through the image list. This is probably + the source of the out of files problem with STF images. It may + be the source of the out of memory problem reported from AOS/IRAF. + +pkg$images/imfit/fit1d.x +pkg$images/imfit/mkpkg + Valdes, March 17, 1987 + 1. Added error checking for the illegal operation in which both input + and output image had an image section. This was causing the task + to crash. The task now behaves properly in this circumstance and + even allows the fitted output to be placed in an image section of + an existing output image (even different than the input image + section) provided the input and output images have the same sizes. + +pkg$images/t_convolve.x + Davis, March 3, 1987 + 1. Fixed the kernel decoding routine in the convolve task so that + it now recognizes the row delimter character in string entry mode. + +pkg$images/geometry,filters + Davis, February 27, 1987 + 1. Changed all the imseti (im, TY_BNDRYPIXVAL, value) calls to imsetr. + +pkg$images/t_minmax.x,minmax.x + Davis, February 24, 1987 + 1. Minmax has been changed to compute the minimum and maximum pixel + as well as the minimum and maximum pixel values. The pixels are output + in section notation and stored in the minmax parameter file. + +pkg$images/t_magnify.x + Davis, February 19, 1987 + 1. Magnify was aborting with the error MSIFIT: Too few datapoints + when trying to reduce an image using the higher order interpolants + poly3, poly5 and spline3. I increased the NEDGE defined constant + from 2 to three and modified the code to use the out of bounds + imio. + +pkg$images/geograph.x,geogmap.x + Davis, February 17, 1987 + 1. Geomap now uses the gpagefile routine to page the .keys file. + The :show command deactivates the workstation before printing a + block of text and reactivates it when it is finished. + +pkg$images/geometry/geomap,geotran + Davis, January 26, 1987 + 1. There have been substantial changes to the geomap, and geotrans + tasks and those tasks rotate, imlintran and register which depend + on them. + 2. Geomap has been changed to be able to compute a transformation + in both single and double precision. + 3. The geotran code has been speeded up considerably. A simple rotate + now takes 70 seconds instead of 155 seconds using bilinear interpolation. + 4. Two new cl parameters nxblock and nyblock have been added to the + rotate, imlintran, register and geotran tasks. If the output image + is smaller than these parameters then the entire output image + is computed at once. Otherwise the output image is computed in blocks + nxblock by nyblock in size. + 5. The 3 geotran parameters rotation, scangle and flip have been replaced + with two parameters xrotation and yrotation which serve the same purpose. + +pkg$images/geometry/t_shiftlines.x,shiftlines.x + Davis, January 19, 1987 + 1. The shiftlines task has been completely rewritten. The following + are the major changes. + 2. Shiftlines now makes use of the imio boundary extension operations. + Therefore the four options: nearest pixel, reflect, wrap and constant + boundary extension are available. + 3. The interpolation code has been vectorised. The previous version + was using the function call asieval for every output pixel evaluated. + The asieval call were replaced with asivector calls. + 4. An extra CL parameter constant to support constant boundary + exension was added. + 5. The shiftlines help page was modified and the date changed to + January 1987. + +pkg$images/imfit/imsurfit.x + Davis, January 12, 1987 + 1. I changed the amedr call to asokr calls. For my application it did + not matter whether the input array is left partially sorted and the asokr + routine is more efficient. + +pkg$images/lib/pixlist.x + Davis, December 12, 1986 + 1. A bug in the pl_get_ranges routine caused the routine to fail when the + number of ranges got too large. The program could not detect the end of + the ranges and would go into an infinite loop. + +pkg$images/iminfo/t_imstat.x + Davis, December 3, 1986 + 1. Imstat was failing on constant images because finite machine precision + could result in a negative sigma squared. Added a check for this condition. + +pkg$images/filters/fmode.x + Davis, October 27, 1986 + 1. Added a check for 0 data range before calling amapr. + +pkg$images/imarith/imsum.gx + Valdes, October 20, 1986 + 1. Found and fixed bug in this routine which caused pixel rejection + to fail some fraction of the time. + +pkg$images/geometry/blkrp.gx + Valdes, October 13, 1986 + 1. There was a bug when the replication factor for axis 1 was 1. + +pkg$images/iminfo/imhistogram.x + Hammond, October 8, 1986 + 1. Running imhistogram on a constant valued image would result in + a "floating divide by zero fault" in ahgm. This condition is + now trapped and a warning printed if there is no range in the data. + +pkg$images/tv/doc/cvl.hlp + Valdes, October 7, 1986 + 1. Typo in V2.3 documentation fixed: "zcale" -> "zscale". + +pkg$images/fit1d.par + Valdes, October 7, 1986 + 1. When querying for the output type the query was: + +Type of output (fit, difference, ratio) (fit|difference|ratio) (): + + The enumerated values were removed since they are given in the + prompt string. + +pkg$images/imarith/t_imsum.x +pkg$images/imarith/imsum.gx +pkg$images/do/imsum.hlp + Valdes, October 7, 1986 + 1. Medians or pixel rejection with more than 15 images is now + correct. There was an error in buffering. + 2. Averages of integer datatype images are now correct. The error + was caused by summing the pixel values divided by the number + of images instead of summing the pixel values and then dividing + by the number of images. + 3. Option keywords may now be abbreviated. + 4. The output pixel datatype now defaults to the calculation datatype + as is done in IMARITH. The help page was modified to indicate this. + 5. Dynamic memory is now used throughout to reduce the size of the + executable. + 6. The bugs 1-2 are present in V2.3 and not in V2.2. + +pkg$images/imarith/t_imarith.x +pkg$images/imarith.par +pkg$images/doc/imarith.hlp + Valdes, October 6, 1986 + 1. The parameter "debug" was changed to "noact". "debug" is reserved + for debugging information. + 2. The output pixel type now defaults to the calculation datatype. + 3. The datatype of constant operands is determined with LEXNUM. This + fixes a bug in which a constant such as "1." was classified as an + integer. + 4. Trailing whitespace in the string for a constant operand is allowed. + This fixes a bug with using "@" files created with the task FIELDS + from a table of numbers. Trailing whitespace in image names is + not checked for since this should be taken care of by lower level + system services. + 5. The reported bug with the "max" operation not creating a pixel file + was the result of the previous round of changes. This has been + corrected. This problem does not exist in the released version. + 6. All strings are now dynamically allocated. Also IMTOPENP is used + to open a CL list directly. + 7. The help page was revised for points (1) and (2). + +pkg$images/fmode.par +pkg$images/fmd_buf.x +pkg$images/med_sort.x + Davis, September 29, 1986 + 1. Changed the default value of the unmap parameter in fmode to yes. The + documentation was changed and the date modified. + 2. Added a test to make sure that the input image was not a constant + image in fmode and fmedian. + 3. Fixed the recently added swap macro in the sort routines which + was giving erroneous results for small boxes in tasks median and mode. + +pkg$images/imfit/fit1d.x + Valdes, September 24, 1986 + 1. Changed subroutine name with a VOPS prefix to one with a FIT1D + prefix. + +pkg$images/imarith/t_imdivide.x +pkg$images/doc/imdivide.hlp +pkg$images/imdivide.par + Valdes, September 24, 1986 + 1. Modified this ancient and obsolete task to remove redundant + subroutines now available in the VOPS library. + 2. The option to select action on zero divide was removed since + there was only one option. Parameter file changed. + 3. Help page revised. + +pkg$images/geometry/t_blkrep.x + +pkg$images/geometry/blkrp.gx + +pkg$images/geometry/blkrep.x + +pkg$images/doc/blkrep.hlp + +pkg$images/doc/mkpkg +pkg$images/images.cl +pkg$images/images.men +pkg$images/images.hd +pkg$images/x_images.x + Valdes, September 24, 1986 + 1. A new task called BLKREP for block replicating images has been added. + This task is a complement to BLKAVG and performs a function not + available in any other way. + 2. Help for BLKREP has been added. + +pkg$images/imarith/t_imarith.x +pkg$images/imarith/imadiv.gx +pkg$images/doc/imarith.hlp +pkg$images/imarith.par + Valdes, September 24, 1986 + 1. IMARITH has been modified to provide replacement of divisions + by zero with a constant parameter value. + 2. The documentation has been revised to include this change and to + clarify and emphasize areas of possible confusion. + +pkg$images/doc/magnify.hlp +pkg$images/doc/blkavg.hlp + Valdes, September 18, 1986 + 1. The MAGNIFY help document was expanded to clarify that images with axis + lengths of 1 cannot be magnified. Also a discussion of the output + size of a magnified image. This has been misunderstood often. + 2. Minor typo fix for BLKAVG. + +images$geometry/blkav.gx: Davis, September 7, 1986 + 1. The routine blkav$t was declared a function but called everywhere as + a procedure. Removed the function declaration. + +images$filters/med_sort.x: Davis, August 14, 1986 + 1. A bug in the sorting routine for MEDIAN and MODE in which the doop + loop increment was being set to zero has been fixed. This bug was + causing MEDIAN and MODE to fail on class 6 for certain sized windows. + +images$imfit/fit1d.x: Davis, July 24, 1986 + 1. A bug in the type=ratio option of fit1d was fixed. The iferr call + on the vector operator adivr was not trapping a divide by zero + condition. Changed adivr to adivzr. + +images$iminfo/listpixels.x: Davis, July 21, 1986 + 1. I changed a pargl to pargi for writing out the column number of the + pixels. + +images$iminfo/t_imstat.x: Davis, July 21, 1986 + 1. I changed a pargr to a pargd for the double precision quantitiies + sum(MIN) and sum(MAX). + +images$imfit/t_lineclean.x: Davis, July 14, 1986 + 1. Bug in the calling sequence for ic_clean fixed. The ic pointer + was not being passed to ic_clean causing access violation and/or + segmentation violation errors. + +images$imfit/fit1d.x, lineclean.x: Valdes, July 3, 1986 + 1. FIT1D and LINECLEAN modified to use new ICFIT package. + +From Valdes June 19, 1986 + +1. The help page for IMSUM was modified to explicitly state what the +median of an even number of images does. + +----------------------------------------------------------------------------- + +From Davis June 13, 1986 + +1. A bug in CONVOLVE in which insufficient space was being allocated for +long (> 161 elements) 1D kernels has been fixed. CONVOLVE was not +allocating sufficent extra space. + +----------------------------------------------------------------------------- + +From Davis June 12, 1986 + +1. I have changed the default value of parameter unmap in task FMEDIAN to +yes to preserve the original data range. + +2. I have changed the value of parameter row_delimiter from \n to ;. + +----------------------------------------------------------------------------- + +From Davis May 12, 1986 + +1. Changed the angle convention in GAUSS so that theta is the angle of the +major axis with respect to the x axis measured counter-clockwise as specified +in the help page instead of the negative of that angle. + +----------------------------------------------------------------------------- + +From Davis Apr 28, 1986 + +1. Moved geomap.key to lib$scr and made redefined HELPFILE in geogmap.x +appropriately. + +------------------------------------------------------------------------------ + +images$imarith/imsum.gx: Valdes Apr 25, 1986 + 1. Fixed bug in generic code which called the real VOPS operator + regardless of the datatype. This caused IMSUM to fail on short + images. + +From Davis Apr 17, 1986 + +1. Changed constructs of the form boolean == false in the file imdelete.x +to ! boolean. + +------------------------------------------------------------------------------ + +images$imarith: Valdes, April 8, 1986 + 1. IMARITH has been modified to also operate on a list of specified + header parameters. This is primarily used when adding images to + also added the exposure times. A new parameter was added and the + help page modified. + 2. IMSUM has been modified to also operate on a list of specified + header parameters. This is primarily used when summing images to + also sum the exposure times. A new parameter was added and the + help page modified. + +------------------------------------------------------------------------------ + +From Valdes Mar 24, 1986: + +1. When modifying IMARITH to handle mixed dimensions the output image header +was made a copy of the image with the higher dimension. However, the default +when the images were of the same dimension changed to be a copy of the second +operand. This has been changed back to being a copy of the first operand +image. + +------------------------------------------------------------------------------ + +From Davis Mar 21, 1986: + +1. A NULL pointer bug in the subroutine plfree inside IMSURFIT was causing +segmentation violation errors. A null pointer test was added to plfree. + +------------------------------------------------------------------------------ + +From Davis Mar 20, 1986: + +1. A bug involving in place operations in several image tasks has been fixed. + +------------------------------------------------------------------------------ + +From Davis Mar 19, 1986: + +1. IMSURFIT no longer permits the input image to be replaced by the output +image. + +2. The tasks IMSHIFT, IMTRANSPOSE, SHIFTLINES, and GEOTRAN have been modified +to use the images tools xt_mkimtemp and xt_delimtemp for in place +calculations. + +------------------------------------------------------------------------------- + +From Valdes Mar 13, 1986: + +1. Bug dealing with type coercion in short datatype images in IMARITH and IMSUM +which occurs on the SUN has been fixed. +------ +From Valdes Mar 10, 1986: + +1. IMSUM has been modified to work on any number of images. + +2. Modified the help page +------ +From Valdes Feb 25, 1986: + +There have been two changes to IMARITH: + +1. A bug preventing use of image sections has been removed. + +2. An improvement allowing use of images of different dimension. +The algorithm is as follow: + + a. Check if both operands are images. If not the output + image is a copy of the operand image. + + b. Check that the axes lengths are the same for the dimensions + in common. For example a 3D and 2D image must have the same + number of columns and lines. + + c. Set the output image to be a copy of the image with the + higher dimension. + + d. Repeat the operation over the lower dimensions for each of + the higher dimensions. + +For example, consider subtracting a 2D image from a 3D image. The output +image will be 3D and the 2D image is subtracted from each band of the +3D image. This will work for any combination of dimensions. Another +example is dividing a 3D image by a 1D image. Then each line of each +plane and each band will be divided by the 1D image. Likely applications +will be subtracting biases and darks and dividing by response calibrations +in stacked observations. + +3. Modified the help page +=========== +Release 2.2 +=========== +From Davis Mar 6, 1986: + +1. A serious bug had crept into GAUSS after I made some changes. For 2D +images the sense of the sigma was reversed, i.e sigma = 2.0 was actually +sigma = 0.5. This bug has now been fixed. + +--------------------------------------------------------------------------- + +From Davis Jan 13, 1986: + +1. Listpixels will now print out complex pixel values correctly. + +--------------------------------------------------------------------------- + +From Davis Dec 12, 1985: + +1. The directional gradient operator has been added to the images package. + +--------------------------------------------------------------------------- + +From Valdes Dec 11, 1985: + +1. IMARITH has been modified to first check if an operand is an existing +file. This allows purely numeric image names to be used. + +--------------------------------------------------------------------------- + +From Davis Dec 11, 1985: + +1. A Laplacian (second derivatives) operator has been added to the images +package. + +--------------------------------------------------------------------------- + +From Davis Dec 10, 1985: + +1. The new convolution tasks boxcar, gauss and convolve have been added +to the images package. Convolve convolves an image with an arbitrary +user supplied rectangular kernel. Gauss convolves an image with a 2D +Gaussian of arbitrary size. Boxcar will smooth an image using a smoothing +window of arbitrary size. + +2. The images package source code has been reorganized into the following +subdirectories: 1) filters 2) geometry 3) imfit 4) imarith 4) iminfo and +5) imutil 6) lib. Lib contains routines which may be of use to several IRAF +tasks such as ranges. The imutil subdirectory contains tasks which modify +images in some way such as hedit. The iminfo subdirectory contains code +for displaying header and pixel values and other image characteristics +such as the histogram. Image arithmetic and fitting routines are found +in imarith and imfit respectively. Filters contains the convolution and +median filtering routines and geometry contains the geometric distortion +corrections routines. + +3. The documentation of the main images package has been brought into +conformity with the new IRAF standards. + +4. Documentation for imdelete, imheader, imhistogram, listpixels and +sections has been added to the help database. + +5. The parameter structure for imhistogram has been simplified. The +redundant parameters sections and setranges have been removed. + +--------------------------------------------------------------------------- + + +From Valdes Nov 4, 1985: + +1. IMCOPY modified so that the output image may be a directory. Previously +logical directories were not correctly identified. +------ + +From Davis Oct 21, 1985: + +1. A bug in the pixel rejection cycle of IMSURFIT was corrected. The routine +make_ranges in ranges.x was not successfully converting a sorted list of +rejected pixels into a list of ranges in all cases. + +2. Automatic zero divide error checking has been added to IMSURFIT. +------ +From Valdes Oct 17, 1985: + +1. Fit1d now allows averaging of image lines or columns when interactively +setting the fitting parameters. The syntax is "Fit line = 10 30"; i.e. +blank separated line or column numbers. A single number selects just one +line or column. Be aware however, that the actual fitting of the image +is still done on each column or line individually. + +2. The zero line in the interactive curve fitting graphs has been removed. +This zero line interfered with fitting data near zero. +------ +From Rooke Oct 10, 1985: + +1. Blkaverage was changed to "blkavg" and modified to support any allowed +number of dimensions. It was also made faster in most cases, depending on +the blocking factors in each dimension. +------ +From Valdes Oct 4, 1985: + +1. Fit1d and lineclean modified to allow separate low and high rejection +limits and rejection iterations. +------ +From Davis Oct 3, 1985: + +1. Minmax was not calculating the minimum correctly for integer images. +because the initial values were not being set correctly. +------ +From Valdes Oct 1, 1985: + +1. Imheader was modified to print the image history. Though the history +mechanism is little used at the moment it should become an important part +of any image. + +2. Task revisions renamed to revs. +------ +From Davis Sept 30, 1985: + +1. Two new tasks median and fmedian have been added to the images package. +Fmedian is a fast median filtering algorithm for integer data which uses +the histogram of the image to calculate the median at each window. Median +is a slower but more general algorithm which performs the same task. +------ +From Valdes August 26, 1985: + +1. Blkaverage has been modified to include an new parameter called option. +The current options are to average the blocks or sum the blocks. +------ +From Valdes August 7, 1985 + +1. Fit1d and lineclean wer recompiled with the modified icfit package. +The new package contains better labeling and graph documentation. + +2. The two tasks now have parameters for setting the graphics device +and reading cursor input from a file. +______ +From: /u2/davis/ Tue 08:27:09 06-Aug-85 +Package: images +Title: imshift bug + +Imshift was shifting incorrectly when an integral pixel shift in x and +a fractional pixel shift in y was requested. The actual x shift was +xshift + 1. The bug has been fixed and imshift will now work correctly for +any combination of fractional and integral pixel shifts +------ +From: /u2/davis/ Fri 18:14:12 02-Aug-85 +Package: images +Title: new images task + +A new task GEOMAP has been added to the images package. GEOMAP calculates +the spatial transformation required to map one image onto another. +------ +From: /u2/davis/ Thu 16:47:49 01-Aug-85 +Package: images +Title: new images tasks + +The tasks ROTATE, IMLINTRAN and GEODISTRAN have been added to the images +package. ROTATE rotates and shifts an image. IMLINTRAN will rotate, rescale +and shift an an image. GEODISTRAN corrects an image for geometric distortion. +------ +From Valdes July 26, 1985: + +1. The task revisions has been added to page revisions to the images +package. The intent is that each package will have a revisions task. +Note that this means there may be multiple tasks named revisions loaded +at one time. Typing revisions alone will give the revisions for the +current package. To get the system revisions type system.revisions. + +2. A new task called fit1d replaces linefit. It is essentially the same +as linefit except for an extra parameter "axis" which selects the axis along +which the functions are to be fit. Axis 1 is lines and axis 2 is columns. +The advantages of this change are: + + a. Column fitting can now be done without transposing the image. + This allows linefit to be used with image sections along + both axes. + b. For 1D images there is no prompt for the line number. +.endhelp |