/**
* Chebyshev Coefficients are calculated by performing a Chebyshev transform,
* and generating a histogram of pixel intensities.
*
*/
std::vector<double> ChebyshevCoefficients::calculate( ImageMatrix * IN_matrix )
{
std::vector<double> coeffs;
std::cout << "calculating " << name << std::endl;
if( IN_matrix == NULL ) {
return coeffs;
}
coeffs.reserve(n_features-1);
double temp_vec [32];
ImageMatrix * temp = IN_matrix->duplicate();
for( int i = 0; i < n_features; i++ ) temp_vec[i] = 0;
temp->ChebyshevStatistics2D(temp_vec, 0, 32);
delete temp;
coeffs.assign( temp_vec, temp_vec + n_features);
return coeffs;
}
