| /* im_dE00_fromLab.c |
| * |
| * 10/10/02 JC |
| * - from dECMC |
| * 30/10/09 |
| * - add im__colour_binary() and use it |
| * - gtkdoc comment |
| */ |
| |
| /* |
| |
| 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 <vips/vips.h> |
| #include <vips/internal.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| /* A colour difference operation. |
| */ |
| int |
| im__colour_difference( const char *domain, |
| IMAGE *in1, IMAGE *in2, IMAGE *out, |
| im_wrapmany_fn buffer_fn, void *a, void *b ) |
| { |
| IMAGE *t[3]; |
| |
| if( im_check_uncoded( domain, in1 ) || |
| im_check_uncoded( domain, in2 ) || |
| im_check_bands( domain, in1, 3 ) || |
| im_check_bands( domain, in2, 3 ) || |
| im_check_size_same( domain, in1, in2 ) || |
| im_open_local_array( out, t, 2, domain, "p" ) || |
| im_clip2fmt( in1, t[0], IM_BANDFMT_FLOAT ) || |
| im_clip2fmt( in2, t[1], IM_BANDFMT_FLOAT ) ) |
| return( -1 ); |
| |
| if( im_cp_descv( out, t[0], t[1], NULL ) ) |
| return( -1 ); |
| out->Bands = 1; |
| out->Type = IM_TYPE_B_W; |
| |
| t[2] = NULL; |
| if( im_wrapmany( t, out, buffer_fn, a, b ) ) |
| return( -1 ); |
| |
| return( 0 ); |
| } |
| |
| /* Process a buffer. |
| */ |
| void |
| imb_dE00_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_dE00( L1, a1, b1, L2, a2, b2 ); |
| } |
| } |
| |
| /** |
| * im_dE00_fromLab: |
| * @in1: first input image |
| * @in2: second input image |
| * @out: output image |
| * |
| * Calculate CIE dE00 from two Lab images. |
| * |
| * Returns: 0 on success, -1 on error. |
| */ |
| int |
| im_dE00_fromLab( IMAGE *in1, IMAGE *in2, IMAGE *out ) |
| { |
| return( im__colour_difference( "im_dE00_fromLab", |
| in1, in2, out, |
| (im_wrapmany_fn) imb_dE00_fromLab, NULL, NULL ) ); |
| } |