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Hit&Miss morphological operation

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This commit is contained in:
Lorena García 2015-10-14 13:30:09 +02:00
parent 0f1fdd885d
commit 33f77774c5
2 changed files with 21 additions and 1 deletions
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4
modules/imgproc/include/opencv2/imgproc.hpp
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@ -225,8 +225,10 @@ enum MorphTypes{
//!< \f[\texttt{dst} = \mathrm{morph\_grad} ( \texttt{src} , \texttt{element} )= \mathrm{dilate} ( \texttt{src} , \texttt{element} )- \mathrm{erode} ( \texttt{src} , \texttt{element} )\f]
MORPH_TOPHAT = 5, //!< "top hat"
//!< \f[\texttt{dst} = \mathrm{tophat} ( \texttt{src} , \texttt{element} )= \texttt{src} - \mathrm{open} ( \texttt{src} , \texttt{element} )\f]
MORPH_BLACKHAT = 6 //!< "black hat"
MORPH_BLACKHAT = 6, //!< "black hat"
//!< \f[\texttt{dst} = \mathrm{blackhat} ( \texttt{src} , \texttt{element} )= \mathrm{close} ( \texttt{src} , \texttt{element} )- \texttt{src}\f]
MORPH_HITMISS = 7 //!< "hit and miss"
//!< .- Only supported for CV_8UC1 binary images. Tutorial can be found in [this page](http://opencv-code.com/tutorials/hit-or-miss-transform-in-opencv/)
};
//! shape of the structuring element

18
modules/imgproc/src/morph.cpp
View File

@ -1870,6 +1870,8 @@ void cv::morphologyEx( InputArray _src, OutputArray _dst, int op,
_dst.create(src.size(), src.type());
Mat dst = _dst.getMat();
Mat k1, k2, e1, e2; //only for hit and miss op
switch( op )
{
case MORPH_ERODE:
@ -1905,6 +1907,22 @@ void cv::morphologyEx( InputArray _src, OutputArray _dst, int op,
erode( temp, temp, kernel, anchor, iterations, borderType, borderValue );
dst = temp - src;
break;
case MORPH_HITMISS:
CV_Assert(src.type() == CV_8U && src.channels() == 1);
k1 = (kernel == 1) / 255;
k2 = (kernel == -1) / 255;
normalize(src, src, 0, 1, NORM_MINMAX);
if (countNonZero(k1) <= 0)
e1 = src;
else
erode(src, e1, k1, anchor, iterations, borderType, borderValue);
if (countNonZero(k2) <= 0)
e2 = src;
else
erode(1 - src, e2, k2, anchor, iterations, borderType, borderValue);
dst = e1 & e2;
normalize(dst, dst, 0, 255, NORM_MINMAX);
break;
default:
CV_Error( CV_StsBadArg, "unknown morphological operation" );
}