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// Intel License Agreement
// For Open Source Computer Vision Library
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//M*/
#include "precomp.hpp"
double cv::matchShapes(InputArray contour1, InputArray contour2, int method, double)
{
double ma[7], mb[7];
int i, sma, smb;
double eps = 1.e-5;
double mmm;
double result = 0;
HuMoments( moments(contour1), ma );
HuMoments( moments(contour2), mb );
switch (method)
{
case 1:
for( i = 0; i < 7; i++ )
{
double ama = fabs( ma[i] );
double amb = fabs( mb[i] );
if( ma[i] > 0 )
sma = 1;
else if( ma[i] < 0 )
sma = -1;
else
sma = 0;
if( mb[i] > 0 )
smb = 1;
else if( mb[i] < 0 )
smb = -1;
else
smb = 0;
if( ama > eps && amb > eps )
{
ama = 1. / (sma * log10( ama ));
amb = 1. / (smb * log10( amb ));
result += fabs( -ama + amb );
}
}
break;
case 2:
for( i = 0; i < 7; i++ )
{
double ama = fabs( ma[i] );
double amb = fabs( mb[i] );
if( ma[i] > 0 )
sma = 1;
else if( ma[i] < 0 )
sma = -1;
else
sma = 0;
if( mb[i] > 0 )
smb = 1;
else if( mb[i] < 0 )
smb = -1;
else
smb = 0;
if( ama > eps && amb > eps )
{
ama = sma * log10( ama );
amb = smb * log10( amb );
result += fabs( -ama + amb );
}
}
break;
case 3:
for( i = 0; i < 7; i++ )
{
double ama = fabs( ma[i] );
double amb = fabs( mb[i] );
if( ma[i] > 0 )
sma = 1;
else if( ma[i] < 0 )
sma = -1;
else
sma = 0;
if( mb[i] > 0 )
smb = 1;
else if( mb[i] < 0 )
smb = -1;
else
smb = 0;
if( ama > eps && amb > eps )
{
ama = sma * log10( ama );
amb = smb * log10( amb );
mmm = fabs( (ama - amb) / ama );
if( result < mmm )
result = mmm;
}
}
break;
default:
CV_Error( CV_StsBadArg, "Unknown comparison method" );
}
return result;
}
CV_IMPL double
cvMatchShapes( const void* _contour1, const void* _contour2,
int method, double parameter )
{
cv::AutoBuffer<double> abuf1, abuf2;
cv::Mat contour1 = cv::cvarrToMat(_contour1, false, false, 0, &abuf1);
cv::Mat contour2 = cv::cvarrToMat(_contour2, false, false, 0, &abuf2);
return cv::matchShapes(contour1, contour2, method, parameter);
}
/* End of file. */