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Initialize background model in background subtraction KNN.

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The method does cvCheckPixelBackgroundNP (which reads bgmodel)
before it is ever updated (in cvUpdatePixelBackgroundNP). This
initialization is thus needed to avoid reads of unitialized values.
This commit is contained in:
Fernando Iglesias Garcia 2017-04-12 10:11:50 +02:00
parent 3cee54cd27
commit 21e698053f
1 changed files with 2 additions and 1 deletions
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3
modules/video/src/bgfg_KNN.cpp
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@ -122,7 +122,7 @@ public:
//! computes a background image which are the mean of all background gaussians
virtual void getBackgroundImage(OutputArray backgroundImage) const;
//! re-initiaization method
//! re-initialization method
void initialize(Size _frameSize, int _frameType)
{
frameSize = _frameSize;
@ -137,6 +137,7 @@ public:
// for each sample of 3 speed pixel models each pixel bg model we store ...
// values + flag (nchannels+1 values)
bgmodel.create( 1,(nN * 3) * (nchannels+1)* size,CV_8U);
bgmodel = Scalar::all(0);
//index through the three circular lists
aModelIndexShort.create(1,size,CV_8U);