108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/* @(#) Makes a displayable uchar power spectrum of an input one band image
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* @(#) Input should be float complex
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* @(#) All images are kept in RAM; so only square arrays of powers of
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* @(#) 2 as inputs.
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* @(#) Functions im_fwfft, im_c2ps, im_scaleps and im_rotquad are used
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* @(#) Image descriptors should have been set properly by the calling program
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* @(#)
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* @(#) int im_disp_ps(in, out)
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* @(#) IMAGE *in, *out;
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* @(#) int bandno;
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* @(#)
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* @(#) Returns 0 on sucess and -1 on error
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* @(#)
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*
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* Copyright: 1991, N. Dessipris.
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*
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* Author: Nicos Dessipris
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* Written on: 27/03/1991
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* Modified on :
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* 16/6/93 J.Cupitt
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* - im_ioflag() changed to im_iocheck()
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* 23/2/95 JC
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* - rewritten for partials
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* 10/9/98 JC
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* - frees memory more quickly
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* 2/4/02 JC
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* - any number of bands
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <math.h>
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#include <vips/vips.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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static int
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disp_ps( IMAGE *dummy, IMAGE *in, IMAGE *out )
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{
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IMAGE *t[3];
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if( im_open_local_array( out, t, 3, "im_disp_ps temp 1", "p" ) )
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return( -1 );
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if( in->BandFmt == IM_BANDFMT_COMPLEX ) {
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if( im_c2ps( in, t[1] ) )
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return( -1 );
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}
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else {
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if( im_fwfft( in, t[0] ) || im_c2ps( t[0], t[1] ) )
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return( -1 );
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}
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if( im_scaleps( t[1], t[2] ) || im_rotquad( t[2], out ) )
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return( -1 );
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return( 0 );
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}
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int
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im_disp_ps( IMAGE *in, IMAGE *out )
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{
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IMAGE *dummy = im_open( "memory:1", "p" );
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if( !dummy )
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return( -1 );
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if( disp_ps( dummy, in, out ) ) {
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im_close( dummy );
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return( -1 );
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}
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im_close( dummy );
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return( 0 );
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}
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