homofilter.m others.m Pcolor.m rgbtohsv.m s_high.m s_low.m adapteh.m coloreh.m colorhomofilter.m dispbit.m erasenoise.m f_dot.m f_filter_high.m f_filter_low.m f_homo.m graycon1.m hfenh_histeq.m hist.m histeqtry.m