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.help msiinit Dec98 "Image Interpolation Package"
.ih
NAME
msiinit -- initialize the sequential interpolant descriptor
.ih
SYNOPSIS
include <math/iminterp.h>
msiinit (msi, interp_type)
.nf
pointer msi #U interpolant descriptor
int interp_type #I interpolant type
.fi
.ih
ARGUMENTS
.ls msi
Pointer to the sequential interpolant descriptor.
.le
.ls interp_type
Interpolant type. The options are II_BINEAREST, II_BILINEAR, II_BIPOLY3,
II_BIPOLY5, II_BISPLINE3, II_BISINC, II_BILSINC, and II_BIDRIZZLE, for
nearest neighbour, bilinear, 3rd and 5th order interior polynomials, bicubic
spline, sinc, look-up table sinc, and drizzle respectively. The interpolant
definitions are found in the package header file math/iminterp.h.
.le
.ih
DESCRIPTION
The interpolant type is allocated and initialized. The pointer msi is
returned by MSIINIT. The sinc interpolant width defaults to 31 pixels
in x and y. The look-up table sinc resolution defaults to 20 resolution
elements or 0.05 pixels in x and y. The drizzle pixel fraction defaults
to 1.0.
.ih
NOTES
MSIINIT, MSISINIT or MSIRESTORE must be called before using any other
MSI routines.
.ih
SEE ALSO
msirestore, msifree
.endhelp
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