[opencv] 05/71: Fixed BackgroundSubstractorMOG2 in opencv_video.

[Nobuhiro Iwamatsu]

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iwamatsu pushed a commit to annotated tag 2.4.13.1
in repository opencv.

commit 78de75397e512a3fb4b9aad677ebc4c1472fa9cc
Author: Gilles Rochefort <gilles at placemeter.com>
Date:   Sun May 29 17:25:02 2016 +0200

    Fixed BackgroundSubstractorMOG2 in opencv_video.
    
    The number of gaussians involved in a mixture is supposed
    to be dynamically adjusted. After being increased, the number
    of gaussians can't be reduced anymore.
    
    It seems to be a regression as the legacy code
    located in modules/legacy/src/bgfg_gaussmix.cpp allows to reduce
    such number of gaussians.
---
 modules/video/src/bgfg_gaussmix2.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/modules/video/src/bgfg_gaussmix2.cpp b/modules/video/src/bgfg_gaussmix2.cpp
index 9700dfe..d5eff82 100644
--- a/modules/video/src/bgfg_gaussmix2.cpp
+++ b/modules/video/src/bgfg_gaussmix2.cpp
@@ -309,7 +309,7 @@ struct MOG2Invoker : ParallelLoopBody
 
                 //internal:
                 bool fitsPDF = false;//if it remains zero a new GMM mode will be added
-                int nmodes = modesUsed[x], nNewModes = nmodes;//current number of modes in GMM
+                int nmodes = modesUsed[x];//current number of modes in GMM
                 float totalWeight = 0.f;
 
                 float* mean_m = mean;
@@ -415,8 +415,6 @@ struct MOG2Invoker : ParallelLoopBody
                     gmm[mode].weight *= totalWeight;
                 }
 
-                nmodes = nNewModes;
-
                 //make new mode if needed and exit
                 if( !fitsPDF )
                 {

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