cowgilc@prism.cs.orst.edu (Clayton Cowgill) (06/23/91)
I've been trying to get ADPro to make a decent GIF out of screens saved as 24bit IFF (ILBM?) from DCTV. The problem is, when I examine my work on a SVGA display or truecolor Xterm, the results are really hideous (banding in color and poor color choices). I have the palette set to 'enhanced' and I'm 'executing' with 256 colors. When I view with 'xloadimage' on a UNIX system, it reports that about 250 different colors are in the colormap, apparently ADPro just didn't get very good approximations. Also, if I use 'color_to_gray' and save a GIF, the file size increases from about 79K to over 120K and apparently has MUCH more detail (more gray shades where single bands of color used to be). Any ideas? I'm using a friend's ADPro, so it's hard to just spend hours messing around trying to tweak it right... -Clay ##################===============------------===============################## Clayton Cowgill cowgilc@prism.cs.orst.edu Head Consultant Lab: (503) 737-2435 Oregon State University CS Dept. Home: (503) 754-2806 Corvallis, OR 97330
mark@calvin..westford.ccur.com (Mark Thompson) (06/25/91)
In article <1991Jun23.080423.18422@lynx.CS.ORST.EDU> cowgilc@prism.cs.orst.edu (Clayton Cowgill) writes: >I've been trying to get ADPro to make a decent GIF out of screens saved as >24bit IFF (ILBM?) from DCTV. > >Any ideas? I'm using a friend's ADPro, so it's hard to just spend hours >messing around trying to tweak it right... I use a 24bit version of ilbmtoppm and then use the PD program 'xv' to convert the 24bit ppm file to a GIF. This yields great results. I don't know why but the GIF's I have seen ADPro create from 24bit IFFs look absolutely terrible. %~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~% % ` ' Mark Thompson CONCURRENT COMPUTER % % --==* RADIANT *==-- mark@westford.ccur.com Principal Graphics % % ' Image ` ...!uunet!masscomp!mark Hardware Architect % % Productions (508)392-2480 (603)424-1829 & General Nuisance % % % ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~