added an attempt to model the water color model as GMM (PoolBoundaryDetectorTests.cpp)
added different attempts of background modeling (OpenCV: MOG,KNN; custom: median and block-based median)
added an attempt to detect the vanishing point and swimming lanes recognition
changed SVG files pixels loader to be recursive
added experimental swimmer detection using 'subtractive' mechanism
added extra markup for water classifier
adds OpenCV background subtractor as a preprocessing step
added an attempt to remove water ripples
fixed project file
Merge branch 'develop'