if it''s 8bit, is jpg the only compressed 24bit img format? life is unfair, take advantage of it. UNMB2 - if the link doesn''t work, try clicking it

You can have run length encoded TGA''s that are 24 or 32 bit, and maybe some other color depths as well.


http://druidgames.cjb.net/

yes, but how effective would that be? in 8 bit color you have a 1-256 chance that the next color will be equal (increased in practice by the fact that large strips of color will often fall in the same color) In 24/32 bit color, even seemingly same color areas will probably have some variation - I admit I''ve never tried run-length encoding with 24/32 bit color, does anyone have any stats of compression values?

You know, I never wanted to be a programmer...

Alexandre Moura

It works pretty well with the images I''m using. Most images have patches of color at some point, around the borders, inside of a certain shape, et cetera.


http://druidgames.cjb.net/

RLE works best with images that are rendered or hand-drawn and doesn''t work very well with images that are digitized because of the problem you mentioned, in which case it can be detrimental to use RLE...

Try not to think of it in terms of chance, but rather in color coherence. After all, I have never seen an image that uses a vast array of colors unless you are referring to a snapshot of a color palette drawn on the screen. If the color theme is consistent, you can realize a good deal of compression.

I could draw a 24-bit image that only uses 1 color, after all, so it''s not really about depth...