qccimgimagecomponentextractsubpixel.3

spiht for linux this is used to decod and encode vedio i wich all enjoy

.TH QCCIMGIMAGECOMPONENTCOPY 3 "QCCPACK" ""
.SH NAME
QccIMGImageComponentExtractSubpixel
\- 
extract subpixel via bilinear interpolation
.SH SYNOPSIS
.B #include "libQccPack.h"
.sp
.BI "int QccIMGImageComponentExtractSubpixel(const QccIMGImageComponent *" image_component ", double " x ", double " y ", double *" subpixel );
.SH DESCRIPTION
.BR QccIMGImageComponentExtractSubpixel()
extracts a
.IR subpixel
value from between pixel values on the integer-pixel grid.
.IR x
and
.IR y 
give the horizontal and vertical locations, recpectively,
of the subpixel to extract, which is calculated using bilinear
interpolation on the four nearest pixels in
.IR image_component
with integer-valued row and column addresses.
.SH "RETURN VALUES"
This routine returns 0 on success and 1 on error.
.SH "SEE ALSO"
.BR QccIMGImageComponent (3),
.BR QccPackIMG (3),
.BR QccPack (3)

.SH AUTHOR
Copyright (C) 1997-2009  James E. Fowler
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