opencv morphologyEx
作者:互联网
opencv morphologyEx
void cv::morphologyEx( InputArray _src, OutputArray _dst, int op, InputArray _kernel, Point anchor, int iterations, int borderType, const Scalar& borderValue ) { CV_INSTRUMENT_REGION() Mat kernel = _kernel.getMat(); if (kernel.empty()) { kernel = getStructuringElement(MORPH_RECT, Size(3,3), Point(1,1)); } #ifdef HAVE_OPENCL Size ksize = kernel.size(); anchor = normalizeAnchor(anchor, ksize); CV_OCL_RUN(_dst.isUMat() && _src.dims() <= 2 && _src.channels() <= 4 && anchor.x == ksize.width >> 1 && anchor.y == ksize.height >> 1 && borderType == cv::BORDER_CONSTANT && borderValue == morphologyDefaultBorderValue(), ocl_morphologyEx(_src, _dst, op, kernel, anchor, iterations, borderType, borderValue)) #endif Mat src = _src.getMat(), temp; _dst.create(src.size(), src.type()); Mat dst = _dst.getMat(); #if !IPP_DISABLE_MORPH_ADV CV_IPP_RUN_FAST(ipp_morphologyEx(op, src, dst, kernel, anchor, iterations, borderType, borderValue)); #endif switch( op ) { case MORPH_ERODE: erode( src, dst, kernel, anchor, iterations, borderType, borderValue ); break; case MORPH_DILATE: dilate( src, dst, kernel, anchor, iterations, borderType, borderValue ); break; case MORPH_OPEN: erode( src, dst, kernel, anchor, iterations, borderType, borderValue ); dilate( dst, dst, kernel, anchor, iterations, borderType, borderValue ); break; case MORPH_CLOSE: dilate( src, dst, kernel, anchor, iterations, borderType, borderValue ); erode( dst, dst, kernel, anchor, iterations, borderType, borderValue ); break; case MORPH_GRADIENT: erode( src, temp, kernel, anchor, iterations, borderType, borderValue ); dilate( src, dst, kernel, anchor, iterations, borderType, borderValue ); dst -= temp; break; case MORPH_TOPHAT: if( src.data != dst.data ) temp = dst; erode( src, temp, kernel, anchor, iterations, borderType, borderValue ); dilate( temp, temp, kernel, anchor, iterations, borderType, borderValue ); dst = src - temp; break; case MORPH_BLACKHAT: if( src.data != dst.data ) temp = dst; dilate( src, temp, kernel, anchor, iterations, borderType, borderValue ); erode( temp, temp, kernel, anchor, iterations, borderType, borderValue ); dst = temp - src; break; case MORPH_HITMISS: CV_Assert(src.type() == CV_8UC1); if(countNonZero(kernel) <=0) { src.copyTo(dst); break; } { Mat k1, k2, e1, e2; k1 = (kernel == 1); k2 = (kernel == -1); if (countNonZero(k1) <= 0) e1 = src; else erode(src, e1, k1, anchor, iterations, borderType, borderValue); Mat src_complement; bitwise_not(src, src_complement); if (countNonZero(k2) <= 0) e2 = src_complement; else erode(src_complement, e2, k2, anchor, iterations, borderType, borderValue); dst = e1 & e2; } break; default: CV_Error( CV_StsBadArg, "unknown morphological operation" ); } }
代码参考:opencv3_4_1\opencv-3.4.1\modules\imgproc\src\morph.cpp
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标签:kernel,src,dst,morphologyEx,borderType,opencv,anchor,borderValue 来源: https://www.cnblogs.com/herd/p/15427264.html