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Merge remote-tracking branch 'upstream/3.4' into merge-3.4

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This commit is contained in:
Alexander Alekhin
2019-06-26 20:17:19 +00:00
parent b58b2c5ae8 24790e4061
commit b95e93c20a
43 changed files with 895 additions and 355 deletions
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modules/imgproc/src/grabcut.cpp
+18 -6
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@@ -46,6 +46,8 @@
using namespace cv;
using namespace detail;
namespace {
/*
This is implementation of image segmentation algorithm GrabCut described in
"GrabCut - Interactive Foreground Extraction using Iterated Graph Cuts".
@@ -229,6 +231,8 @@ void GMM::calcInverseCovAndDeterm(int ci, const double singularFix)
}
}
} // namespace
/*
Calculate beta - parameter of GrabCut algorithm.
beta = 1/(2*avg(sqr(||color[i] - color[j]||)))
@@ -380,12 +384,20 @@ static void initGMMs( const Mat& img, const Mat& mask, GMM& bgdGMM, GMM& fgdGMM
}
}
CV_Assert( !bgdSamples.empty() && !fgdSamples.empty() );
Mat _bgdSamples( (int)bgdSamples.size(), 3, CV_32FC1, &bgdSamples[0][0] );
kmeans( _bgdSamples, GMM::componentsCount, bgdLabels,
TermCriteria( CV_TERMCRIT_ITER, kMeansItCount, 0.0), 0, kMeansType );
Mat _fgdSamples( (int)fgdSamples.size(), 3, CV_32FC1, &fgdSamples[0][0] );
kmeans( _fgdSamples, GMM::componentsCount, fgdLabels,
TermCriteria( CV_TERMCRIT_ITER, kMeansItCount, 0.0), 0, kMeansType );
{
Mat _bgdSamples( (int)bgdSamples.size(), 3, CV_32FC1, &bgdSamples[0][0] );
int num_clusters = GMM::componentsCount;
num_clusters = std::min(num_clusters, (int)bgdSamples.size());
kmeans( _bgdSamples, num_clusters, bgdLabels,
TermCriteria( CV_TERMCRIT_ITER, kMeansItCount, 0.0), 0, kMeansType );
}
{
Mat _fgdSamples( (int)fgdSamples.size(), 3, CV_32FC1, &fgdSamples[0][0] );
int num_clusters = GMM::componentsCount;
num_clusters = std::min(num_clusters, (int)fgdSamples.size());
kmeans( _fgdSamples, num_clusters, fgdLabels,
TermCriteria( CV_TERMCRIT_ITER, kMeansItCount, 0.0), 0, kMeansType );
}
bgdGMM.initLearning();
for( int i = 0; i < (int)bgdSamples.size(); i++ )