199 lines
6.1 KiB
C++
199 lines
6.1 KiB
C++
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// Intel License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000, Intel Corporation, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of Intel Corporation may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "precomp.hpp"
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/*F///////////////////////////////////////////////////////////////////////////////////////
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// Name: cvMatchContours
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// Purpose:
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// Calculates matching of the two contours
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// Context:
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// Parameters:
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// contour_1 - pointer to the first input contour object.
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// contour_2 - pointer to the second input contour object.
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// method - method for the matching calculation
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// (now CV_IPPI_CONTOURS_MATCH_I1, CV_CONTOURS_MATCH_I2 or
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// CV_CONTOURS_MATCH_I3 only )
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// rezult - output calculated measure
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//
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//F*/
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CV_IMPL double
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cvMatchShapes( const void* contour1, const void* contour2,
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int method, double /*parameter*/ )
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{
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CvMoments moments;
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CvHuMoments huMoments;
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double ma[7], mb[7];
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int i, sma, smb;
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double eps = 1.e-5;
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double mmm;
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double result = 0;
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if( !contour1 || !contour2 )
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CV_Error( CV_StsNullPtr, "" );
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// calculate moments of the first shape
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cvMoments( contour1, &moments );
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cvGetHuMoments( &moments, &huMoments );
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ma[0] = huMoments.hu1;
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ma[1] = huMoments.hu2;
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ma[2] = huMoments.hu3;
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ma[3] = huMoments.hu4;
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ma[4] = huMoments.hu5;
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ma[5] = huMoments.hu6;
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ma[6] = huMoments.hu7;
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// calculate moments of the second shape
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cvMoments( contour2, &moments );
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cvGetHuMoments( &moments, &huMoments );
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mb[0] = huMoments.hu1;
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mb[1] = huMoments.hu2;
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mb[2] = huMoments.hu3;
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mb[3] = huMoments.hu4;
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mb[4] = huMoments.hu5;
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mb[5] = huMoments.hu6;
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mb[6] = huMoments.hu7;
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switch (method)
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{
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case 1:
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{
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for( i = 0; i < 7; i++ )
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{
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double ama = fabs( ma[i] );
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double amb = fabs( mb[i] );
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if( ma[i] > 0 )
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sma = 1;
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else if( ma[i] < 0 )
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sma = -1;
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else
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sma = 0;
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if( mb[i] > 0 )
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smb = 1;
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else if( mb[i] < 0 )
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smb = -1;
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else
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smb = 0;
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if( ama > eps && amb > eps )
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{
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ama = 1. / (sma * log10( ama ));
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amb = 1. / (smb * log10( amb ));
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result += fabs( -ama + amb );
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}
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}
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break;
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}
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case 2:
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{
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for( i = 0; i < 7; i++ )
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{
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double ama = fabs( ma[i] );
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double amb = fabs( mb[i] );
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if( ma[i] > 0 )
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sma = 1;
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else if( ma[i] < 0 )
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sma = -1;
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else
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sma = 0;
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if( mb[i] > 0 )
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smb = 1;
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else if( mb[i] < 0 )
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smb = -1;
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else
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smb = 0;
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if( ama > eps && amb > eps )
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{
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ama = sma * log10( ama );
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amb = smb * log10( amb );
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result += fabs( -ama + amb );
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}
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}
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break;
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}
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case 3:
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{
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for( i = 0; i < 7; i++ )
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{
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double ama = fabs( ma[i] );
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double amb = fabs( mb[i] );
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if( ma[i] > 0 )
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sma = 1;
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else if( ma[i] < 0 )
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sma = -1;
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else
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sma = 0;
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if( mb[i] > 0 )
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smb = 1;
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else if( mb[i] < 0 )
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smb = -1;
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else
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smb = 0;
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if( ama > eps && amb > eps )
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{
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ama = sma * log10( ama );
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amb = smb * log10( amb );
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mmm = fabs( (ama - amb) / ama );
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if( result < mmm )
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result = mmm;
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}
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}
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break;
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}
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default:
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CV_Error( CV_StsBadArg, "Unknown comparison method" );
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}
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return result;
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}
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/* End of file. */
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