Ewald Snel ([EMAIL PROTECTED]): > > Please, please correct me if I'm wrong here. In MPEG sampling, the > > chrominance sample is halfway between the two luminance samples on > > the same vertical scanline (by is138182): > > I think you're right, my interpolation looks like this : > > o o (c=.75*c1 + .25*c0) > c1 > o o (c=.75*c1 + .25*c2) > > o o (c=.75*c2 + .25*c1) > c2 > o o (c=.75*c2 + .25*c3)
You mean you think I'm wrong. :) My picture was wrong, yours makes total sense, and I now believe your filter is reasonable. > It's actually 0.5 pixel (my mistake :)) using the following filter : > > o o (c=c1) > c1 > o o (c=.5*c1 + .5*c2) > > o o (c=c2) > c2 > o o (c=.5*c2 + .5*c3) I don't think this is right for MPEG2. -- Billy Biggs [EMAIL PROTECTED] _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
