lowoodz's profile - activity

There is a possible bug in function magSpectrums(), it seems that the calculation of magnitude of DC component (the first element) is wrong, it has missed the square root operation.

    if( !is_1d && cn == 1 )
    {
        for( k = 0; k < (cols % 2 ? 1 : 2); k++ )
        {
            if( k == 1 )
                dataSrc += cols - 1, dataDst += cols - 1;
            dataDst[0] = dataSrc[0]*dataSrc[0]; /// DC component
            if( rows % 2 == 0 )
                dataDst[(rows-1)*stepDst] = dataSrc[(rows-1)*stepSrc]*dataSrc[(rows-1)*stepSrc]; /// DC component

            for( j = 1; j <= rows - 2; j += 2 )
            {
                dataDst[j*stepDst] = (float)std::sqrt((double)dataSrc[j*stepSrc]*dataSrc[j*stepSrc] +
                                                      (double)dataSrc[(j+1)*stepSrc]*dataSrc[(j+1)*stepSrc]);
            }

            if( k == 1 )
                dataSrc -= cols - 1, dataDst -= cols - 1;
        }
    }