HOG\1.tif ...\2.tif ...\anna_phog_demo.m ...\BHOG_yw.m ...\BinHOGFeature.m ...\HOGGradient.m ...\HOGGradient2.m ...\ImgHOGFeature.m ...\ImgHOGFeature2.m ...\RatioGradient.m ...\RatioGradient.m~ HOG