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Tina6/tina-libs/tina/image/imgPrc_complexify.c

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  1 /**********
  2  *
  3  * Copyright (c) 2003, Division of Imaging Science and Biomedical Engineering,
  4  * University of Manchester, UK.  All rights reserved.
  5  * 
  6  * Redistribution and use in source and binary forms, with or without modification, 
  7  * are permitted provided that the following conditions are met:
  8  * 
  9  *   . Redistributions of source code must retain the above copyright notice, 
 10  *     this list of conditions and the following disclaimer.
 11  *    
 12  *   . Redistributions in binary form must reproduce the above copyright notice,
 13  *     this list of conditions and the following disclaimer in the documentation 
 14  *     and/or other materials provided with the distribution.
 15  * 
 16  *   . Neither the name of the University of Manchester nor the names of its
 17  *     contributors may be used to endorse or promote products derived from this 
 18  *     software without specific prior written permission.
 19  * 
 20  * 
 21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 31  * POSSIBILITY OF SUCH DAMAGE.
 32  *
 33  **********
 34  *
 35  * Program :    TINA
 36  * File    :  $Source: /home/tina/cvs/tina-libs/tina/image/imgPrc_complexify.c,v $
 37  * Date    :  $Date: 2003/09/22 16:09:02 $
 38  * Version :  $Revision: 1.4 $
 39  * CVS Id  :  $Id: imgPrc_complexify.c,v 1.4 2003/09/22 16:09:02 tony Exp $
 40  *
 41  * Author  : Legacy TINA
 42  */
 43 
 44 /** 
 45  *  @file
 46  *  @brief Generate a complex image from two scalar images representing real and imaginary components.
 47  *
 48  */
 49 
 50 #include "imgPrc_complexify.h"
 51 
 52 #if HAVE_CONFIG_H
 53 #include <config.h>
 54 #endif
 55 
 56 #include <math.h>
 57 #include <tina/sys/sysDef.h>
 58 #include <tina/sys/sysPro.h>
 59 #include <tina/math/mathDef.h>
 60 #include <tina/math/mathPro.h>
 61 #include <tina/image/img_GenDef.h>
 62 #include <tina/image/img_GenPro.h>
 63 
 64 Imrect         *imz_cmplx(Imrect * im1, Imrect * im2)
 65 {
 66         Imrect         *im3;
 67         Imregion       *roi;
 68         float          *row1;
 69         float          *row2;
 70         Complex        *row3;
 71         int             lx, ux, ly, uy;
 72         int             width, height;
 73         int             i, j;
 74 
 75         if (im1 == NULL || im2 == NULL)
 76                 return (NULL);
 77 
 78         roi = roi_inter(im1->region, im2->region);
 79         if (roi == NULL)
 80                 return (NULL);
 81         lx = roi->lx;
 82         ux = roi->ux;
 83         ly = roi->ly;
 84         uy = roi->uy;
 85 
 86         width = MIN(im1->width, im2->width);
 87         height = MIN(im1->height, im2->height);
 88 
 89         im3 = im_alloc(height, width, roi, complex_v);
 90         row1 = fvector_alloc(lx, ux);
 91         row2 = fvector_alloc(lx, ux);
 92         row3 = zvector_alloc(lx, ux);
 93 
 94         for (i = ly; i < uy; ++i)
 95         {
 96                 im_get_rowf(row1, im1, i, lx, ux);
 97                 im_get_rowf(row2, im2, i, lx, ux);
 98                 for (j = lx; j < ux; ++j)
 99                         row3[j] = cmplx((double) row1[j], (double) row2[j]);
100                 im_put_rowz(row3, im3, i, lx, ux);
101         }
102 
103         fvector_free(row1, lx);
104         fvector_free(row2, lx);
105         zvector_free(row3, lx);
106         rfree(roi);
107         return (im3);
108 }
109 

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