| /* im_cmulnorm.c |
| * |
| * Copyright: 1990, N. Dessipris. |
| * |
| * Author: Nicos Dessipris |
| * Written on: 02/05/1990 |
| * Modified on: |
| * 15/4/97 JC |
| * - thrown away and redone in terms of im_multiply() |
| * 9/7/02 JC |
| * - im_sign() broken out, done in terms of that |
| * 28/8/09 |
| * - gtkdoc |
| * - tiny polish |
| */ |
| |
| /* |
| |
| 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 <stdio.h> |
| #include <stdlib.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| /** |
| * im_cmulnorm |
| * @in1: input #IMAGE 1 |
| * @in2: input #IMAGE 2 |
| * @out: output #IMAGE |
| * |
| * im_cmulnorm() multiplies two complex images. The complex output is |
| * normalised to 1 by dividing both the real and the imaginary part of each |
| * pel with the norm. This is useful for phase correlation. |
| * |
| * This operation used to be important, but now simply calls im_multiply() |
| * then im_sign(). |
| * |
| * See also: im_multiply(), im_sign(). |
| * |
| * Returns: 0 on success, -1 on error |
| */ |
| int |
| im_cmulnorm( IMAGE *in1, IMAGE *in2, IMAGE *out ) |
| { |
| IMAGE *t1; |
| |
| if( !(t1 = im_open_local( out, "im_cmulnorm:1", "p" )) || |
| im_multiply( in1, in2, t1 ) || |
| im_sign( t1, out ) ) |
| return( -1 ); |
| |
| return( 0 ); |
| } |
