> On Mon, Dec 21, 1998 at 02:34:31AM +0800, k e c h i e wrote: > > On Sun, 20 Dec 1998, Rick Macdonald wrote: > > > > > > > > I can't tell the difference between 16bpp and 24bpp 24 colour JPEG > > > files, viewed with xv. > > > > Try doin' some gradients in GIMP. > > Or some povray pictures. You can detect distinct stripes in 16bpp but none > in 24bpp. Everything above 24bpp (32bpp) would be insane. It's nice there is > at least one thing that doesn't need to be improved in the computer world :)
Simple dithering can usually fix gradients in 16bpp. A gradient is visible due to "edge enhancement" in our eyes. Dithering with 16bpp is usually invisible. not all programs do this though. Helge Hafting
