qccimgimagecomponentextractsubpixel.3

来自「spiht for linux this is used to decod an」· 3 代码 · 共 48 行

.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
.\"  The programs herein are free software; you can redistribute them an.or
.\"  modify them under the terms of the GNU General Public License
.\"  as published by the Free Software Foundation; either version 2
.\"  of the License, or (at your option) any later version.
.\"  
.\"  These programs are distributed in the hope that they will be useful,
.\"  but WITHOUT ANY WARRANTY; without even the implied warranty of
.\"  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\"  GNU General Public License for more details.
.\"  
.\"  You should have received a copy of the GNU General Public License
.\"  along with these programs; if not, write to the Free Software
.\"  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.