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fixed the case learningRate==0 in BackgroundSubtractorMOG2 (patch #2221; thanks to Will Lucas)

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This commit is contained in:
Vadim Pisarevsky 2012-09-11 14:13:37 +04:00
parent bb93651048
commit bbeffcc115
1 changed files with 9 additions and 12 deletions
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21
modules/video/src/bgfg_gaussmix2.cpp
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@ -562,18 +562,15 @@ void BackgroundSubtractorMOG2::operator()(InputArray _image, OutputArray _fgmask
learningRate = learningRate >= 0 && nframes > 1 ? learningRate : 1./min( 2*nframes, history );
CV_Assert(learningRate >= 0);
if (learningRate > 0)
{
parallel_for(BlockedRange(0, image.rows),
MOG2Invoker(image, fgmask,
(GMM*)bgmodel.data,
(float*)(bgmodel.data + sizeof(GMM)*nmixtures*image.rows*image.cols),
bgmodelUsedModes.data, nmixtures, (float)learningRate,
(float)varThreshold,
backgroundRatio, varThresholdGen,
fVarInit, fVarMin, fVarMax, float(-learningRate*fCT), fTau,
bShadowDetection, nShadowDetection));
}
parallel_for(BlockedRange(0, image.rows),
MOG2Invoker(image, fgmask,
(GMM*)bgmodel.data,
(float*)(bgmodel.data + sizeof(GMM)*nmixtures*image.rows*image.cols),
bgmodelUsedModes.data, nmixtures, (float)learningRate,
(float)varThreshold,
backgroundRatio, varThresholdGen,
fVarInit, fVarMin, fVarMax, float(-learningRate*fCT), fTau,
bShadowDetection, nShadowDetection));
}
void BackgroundSubtractorMOG2::getBackgroundImage(OutputArray backgroundImage) const