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OpenCV:BackgroundSubtraction

lastmod 2018-08-17created 2015-04-3011 edits

Gaussian Background Detection Algorithm

Part of the opencv-2.4.9/modules/legacy/include/opencv2/legacy.hpp file: 

/*
 Interface of Gaussian mixture algorithm

 "An improved adaptive background mixture model for real-time tracking with shadow detection"
 P. KadewTraKuPong and R. Bowden,
 Proc. 2nd European Workshp on Advanced Video-Based Surveillance Systems, 2001."
 http://personal.ee.surrey.ac.uk/Personal/R.Bowden/publications/avbs01/avbs01.pdf
 */

/* Note:  "MOG" == "Mixture Of Gaussians": */

#define CV_BGFG_MOG_MAX_NGAUSSIANS 500

/* default parameters of gaussian background detection algorithm */
#define CV_BGFG_MOG_BACKGROUND_THRESHOLD     0.7     /* threshold sum of weights for background test */
#define CV_BGFG_MOG_STD_THRESHOLD            2.5     /* lambda=2.5 is 99% */
#define CV_BGFG_MOG_WINDOW_SIZE              200     /* Learning rate; alpha = 1/CV_GBG_WINDOW_SIZE */
#define CV_BGFG_MOG_NGAUSSIANS               5       /* = K = number of Gaussians in mixture */
#define CV_BGFG_MOG_WEIGHT_INIT              0.05
#define CV_BGFG_MOG_SIGMA_INIT               30
#define CV_BGFG_MOG_MINAREA                  15.f

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References

  1. An_Improved_Adaptive_Background_Mixture_Model_for_Realtime.pdf ↩

  2. OpenCV-How_to_Use_Background_Subtraction_Methods.pdf ↩

  3. Tutorial_-_Background_detection_with_OpenCV.pdf ↩

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