Function IPPMorphOp

deps/opencv/modules/imgproc/src/morph.cpp:1218–1286

}

static bool IPPMorphOp(int op, InputArray _src, OutputArray _dst,
    const Mat& _kernel, Point anchor, int iterations,
    int borderType, const Scalar &borderValue)
{
    Mat src = _src.getMat(), kernel = _kernel;
    if( !( src.depth() == CV_8U || src.depth() == CV_32F ) || ( iterations > 1 ) ||
        !( borderType == cv::BORDER_REPLICATE || (borderType == cv::BORDER_CONSTANT && borderValue == morphologyDefaultBorderValue()) )
        || !( op == MORPH_DILATE || op == MORPH_ERODE) )
        return false;
    if( borderType == cv::BORDER_CONSTANT && kernel.data )
    {
        int x, y;
        for( y = 0; y < kernel.rows; y++ )
        {
            if( kernel.at<uchar>(y, anchor.x) != 0 )
                continue;
            for( x = 0; x < kernel.cols; x++ )
            {
                if( kernel.at<uchar>(y,x) != 0 )
                    return false;
            }
        }
        for( x = 0; x < kernel.cols; x++ )
        {
            if( kernel.at<uchar>(anchor.y, x) != 0 )
                continue;
            for( y = 0; y < kernel.rows; y++ )
            {
                if( kernel.at<uchar>(y,x) != 0 )
                    return false;
            }
        }

    }
    Size ksize = kernel.data ? kernel.size() : Size(3,3);

    _dst.create( src.size(), src.type() );
    Mat dst = _dst.getMat();

    if( iterations == 0 || kernel.rows*kernel.cols == 1 )
    {
        src.copyTo(dst);
        return true;
    }

    bool rectKernel = false;
    if( !kernel.data )
    {
        ksize = Size(1+iterations*2,1+iterations*2);
        anchor = Point(iterations, iterations);
        rectKernel = true;
        iterations = 1;
    }
    else if( iterations >= 1 && countNonZero(kernel) == kernel.rows*kernel.cols )
    {
        ksize = Size(ksize.width + (iterations-1)*(ksize.width-1),
             ksize.height + (iterations-1)*(ksize.height-1)),
        anchor = Point(anchor.x*iterations, anchor.y*iterations);