111 lines
2.4 KiB
C
111 lines
2.4 KiB
C
/* @(#) Calculate dECMC from two Lab images
|
|
* @(#)
|
|
* @(#) Usage:
|
|
* @(#) im_dECMC_fromLab( im1, im2, im_out )
|
|
* @(#) IMAGE *im1, *im2, *im_out;
|
|
* @(#)
|
|
* @(#) float out.
|
|
* @(#)
|
|
* @(#) Returns: -1 on error, else 0
|
|
* 5/8/98 JC
|
|
* - oops, wasn't testing input args correctly
|
|
*/
|
|
|
|
/*
|
|
|
|
This file is part of VIPS.
|
|
|
|
VIPS is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
*/
|
|
|
|
/*
|
|
|
|
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
|
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif /*HAVE_CONFIG_H*/
|
|
#include <vips/intl.h>
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
|
|
#include <vips/vips.h>
|
|
|
|
#ifdef WITH_DMALLOC
|
|
#include <dmalloc.h>
|
|
#endif /*WITH_DMALLOC*/
|
|
|
|
/* Process a buffer.
|
|
*/
|
|
void
|
|
imb_dECMC_fromLab( float **p, float *q, int n )
|
|
{
|
|
float *p1 = p[0];
|
|
float *p2 = p[1];
|
|
int x;
|
|
|
|
for( x = 0; x < n; x++ ) {
|
|
float L1 = p1[0];
|
|
float a1 = p1[1];
|
|
float b1 = p1[2];
|
|
float L2 = p2[0];
|
|
float a2 = p2[1];
|
|
float b2 = p2[2];
|
|
|
|
p1 += 3;
|
|
p2 += 3;
|
|
|
|
q[x] = im_col_dECMC( L1, a1, b1, L2, a2, b2 );
|
|
}
|
|
}
|
|
|
|
int
|
|
im_dECMC_fromLab( IMAGE *im1, IMAGE *im2, IMAGE *out )
|
|
{
|
|
IMAGE *invec[3];
|
|
|
|
/* Check input types.
|
|
*/
|
|
if( im1->Bands != 3 || im1->BandFmt != IM_BANDFMT_FLOAT ||
|
|
im1->Coding != IM_CODING_NONE ||
|
|
im2->Bands != 3 || im2->BandFmt != IM_BANDFMT_FLOAT ||
|
|
im2->Coding != IM_CODING_NONE ) {
|
|
im_errormsg( "im_dECMC_fromLab: 3-band float only" );
|
|
return( -1 );
|
|
}
|
|
|
|
/* Prepare the output image
|
|
*/
|
|
if( im_cp_descv( out, im1, im2, NULL ) )
|
|
return( -1 );
|
|
out->Bbits = IM_BBITS_FLOAT;
|
|
out->Bands = 1;
|
|
out->BandFmt = IM_BANDFMT_FLOAT;
|
|
out->Type = IM_TYPE_B_W;
|
|
|
|
/* Do the processing.
|
|
*/
|
|
invec[0] = im1; invec[1] = im2; invec[2] = NULL;
|
|
if( im_wrapmany( invec, out,
|
|
(im_wrapmany_fn) imb_dECMC_fromLab, NULL, NULL ) )
|
|
return( -1 );
|
|
|
|
return( 0 );
|
|
}
|