Boring changes - video.

modules/video/src/bgfg_gaussmix.cpp

@@ -464,7 +464,7 @@ void BackgroundSubtractorMOGImpl::apply(InputArray _image, OutputArray _fgmask,
 Ptr<BackgroundSubtractorMOG> createBackgroundSubtractorMOG(int history, int nmixtures,
                                   double backgroundRatio, double noiseSigma)
 {
-    return new BackgroundSubtractorMOGImpl(history, nmixtures, backgroundRatio, noiseSigma);
+    return makePtr<BackgroundSubtractorMOGImpl>(history, nmixtures, backgroundRatio, noiseSigma);
 }
 
 }

modules/video/src/bgfg_gaussmix2.cpp

@@ -769,7 +769,7 @@ void BackgroundSubtractorMOG2Impl::getBackgroundImage(OutputArray backgroundImag
 Ptr<BackgroundSubtractorMOG2> createBackgroundSubtractorMOG2(int _history, double _varThreshold,
                                                              bool _bShadowDetection)
 {
-    return new BackgroundSubtractorMOG2Impl(_history, (float)_varThreshold, _bShadowDetection);
+    return makePtr<BackgroundSubtractorMOG2Impl>(_history, (float)_varThreshold, _bShadowDetection);
 }
 
 }

modules/video/src/bgfg_gmg.cpp

@@ -485,7 +485,7 @@ void BackgroundSubtractorGMGImpl::release()
 
 Ptr<BackgroundSubtractorGMG> createBackgroundSubtractorGMG(int initializationFrames, double decisionThreshold)
 {
-    Ptr<BackgroundSubtractorGMG> bgfg = new BackgroundSubtractorGMGImpl;
+    Ptr<BackgroundSubtractorGMG> bgfg = makePtr<BackgroundSubtractorGMGImpl>();
     bgfg->setNumFrames(initializationFrames);
     bgfg->setDecisionThreshold(decisionThreshold);
 

modules/video/src/tvl1flow.cpp

@@ -953,5 +953,5 @@ CV_INIT_ALGORITHM(OpticalFlowDual_TVL1, "DenseOpticalFlow.DualTVL1",
 
 Ptr<DenseOpticalFlow> cv::createOptFlow_DualTVL1()
 {
-    return new OpticalFlowDual_TVL1;
+    return makePtr<OpticalFlowDual_TVL1>();
 }

modules/video/test/test_backgroundsubtractor_gbh.cpp

@@ -40,7 +40,7 @@ void CV_BackgroundSubtractorTest::run(int)
     Ptr<BackgroundSubtractorGMG> fgbg = createBackgroundSubtractorGMG();
     Mat fgmask;
 
-    if (fgbg.empty())
+    if (!fgbg)
         CV_Error(Error::StsError,"Failed to create Algorithm\n");
 
     /**