http://bugs.cinelerra.org/show_bug.cgi?id=241
------- Additional Comments From [EMAIL PROTECTED] 2006-04-18 13:22 ------- Still working on it - after I went back to look at the RGB side of things, I noticed that the original author had at some point apparently intended to use HSV calculations to perform the comparison, as shown by the presence of the unused min_hue and max_hue variables. While use of the single value of H seems like the smartest way to do a difference comparison, without regard to S or V, it turns out that the calculation fails when comparing areas that are close-to-white or close-to-black, as compressed frames often take on imperceptible hue values in these pixel areas. So you end up washing out large areas or white or black. So, I'm still looking for the best chroma key algorithm, especially one that deals well with color bleed from DV compression. ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
