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Week 2. Background subtraction via Gaussian modelling

Task 1. Gaussian modelling. Evaluation by means of F-score vs alpha and AUC (Precision-Recall curves).

  • Run the function optimalAlpha() and f1ScoreCurve() in main.py for F-score vs alpha.
  • Run the function precisionRecallCurve() in main.py for AUC.
  • See the implementation of optimalAlpha() in backgroundEstimation.py
  • See the implementation of f1ScoreCurve() and precisionRecallCurve() in readInputWriteOutput.py

Task 2. Adaptive modelling. Comparison between adaptive and non-adaptive methods via F-score and AUC.

  • Run the function gridSearchAdaptiveClassifier() in main.py to find optimal parameters for the adaptive model.
  • The adaptive model is implemented in the class AdaptiveClassifier (check the associated .py file).
  • Run the function optimalAlphaAdaptive() for F-score vs alpha (implemented in backgroundEstimationAdaptive.py).
  • Run the function precisionRecallCurve() in main.py for AUC.

Task 3. Comparison with state of the art. Methods from Tasks 1 and 2 are compared to MOG and MOG2.

  • Run the function testBackgroundSubtractorMOG() in main.py
  • See the implementation of testBackgroundSubtractorMOG() in stateOfTheArt.py

Task 4. Gaussian modelling taking into account color. RGB and YCbCr colorspaces used.

  • Set the boolean 'Color' to 'True' in main.py
  • Run the same functions from Task 1, which are adapted to work with 3-channel images.
  • Uncomment line 55 of backgroundEstimation.py to use YCbCr.