opencv ocl_morphologyEx

opencv   ocl_morphologyEx

static bool ocl_morphologyEx(InputArray _src, OutputArray _dst, int op,
                             InputArray kernel, Point anchor, int iterations,
                             int borderType, const Scalar& borderValue)
{
    _dst.createSameSize(_src, _src.type());
    bool submat = _dst.isSubmatrix();
    UMat temp;
    _OutputArray _temp = submat ? _dst : _OutputArray(temp);

    switch( op )
    {
    case MORPH_ERODE:
        if (!ocl_morphOp( _src, _dst, kernel, anchor, iterations, MORPH_ERODE, borderType, borderValue ))
            return false;
        break;
    case MORPH_DILATE:
        if (!ocl_morphOp( _src, _dst, kernel, anchor, iterations, MORPH_DILATE, borderType, borderValue ))
            return false;
        break;
    case MORPH_OPEN:
        if (!ocl_morphOp( _src, _temp, kernel, anchor, iterations, MORPH_ERODE, borderType, borderValue ))
            return false;
        if (!ocl_morphOp( _temp, _dst, kernel, anchor, iterations, MORPH_DILATE, borderType, borderValue ))
            return false;
        break;
    case MORPH_CLOSE:
        if (!ocl_morphOp( _src, _temp, kernel, anchor, iterations, MORPH_DILATE, borderType, borderValue ))
            return false;
        if (!ocl_morphOp( _temp, _dst, kernel, anchor, iterations, MORPH_ERODE, borderType, borderValue ))
            return false;
        break;
    case MORPH_GRADIENT:
        if (!ocl_morphOp( _src, temp, kernel, anchor, iterations, MORPH_ERODE, borderType, borderValue ))
            return false;
        if (!ocl_morphOp( _src, _dst, kernel, anchor, iterations, MORPH_DILATE, borderType, borderValue, MORPH_GRADIENT, temp ))
            return false;
        break;
    case MORPH_TOPHAT:
        if (!ocl_morphOp( _src, _temp, kernel, anchor, iterations, MORPH_ERODE, borderType, borderValue ))
            return false;
        if (!ocl_morphOp( _temp, _dst, kernel, anchor, iterations, MORPH_DILATE, borderType, borderValue, MORPH_TOPHAT, _src ))
            return false;
        break;
    case MORPH_BLACKHAT:
        if (!ocl_morphOp( _src, _temp, kernel, anchor, iterations, MORPH_DILATE, borderType, borderValue ))
            return false;
        if (!ocl_morphOp( _temp, _dst, kernel, anchor, iterations, MORPH_ERODE, borderType, borderValue, MORPH_BLACKHAT, _src ))
            return false;
        break;
    default:
        CV_Error( CV_StsBadArg, "unknown morphological operation" );
    }

    return true;
}

代码参考：opencv3_4_1opencv-3.4.1modulesimgprocsrcmorph.cpp

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