Re: FN-FORUM Datemate

date posted 29th August 2000 15:23

on 29/9/2000 10:37 am, Ruth Arnold at [EMAIL REMOVED] wrote:

> Jpeg'ing this image leaves it looking a little 'smudged'. It's definitely a
> good candidate for saving as a gif as it only has a few colours and has wide
> stretches of each colour (unlike your average photo). Saving it as a gif
> also has the advantage of giving it a smaller file size.

This leads me to lament (again!) that I have yet to see an intelligent
colour reduction & dithering system for GIF generation. You can't even do it
sensibly in Photoshop. Try dithering two parts of the same image into
different palettes, or applying dithering to a palette to only a selected
area of an image. Using palettes in RGB mode is something of a dark art.

And also that a lossless compressed PNG will sometimes be smaller than an
equivalent GIF or JPEG, look better, and support an alpha channel. Just
needs some browser support now - Only Mac IE5 is up to it as yet.

Marcus
--
Marcus Bointon
Synchromedia Limited: Putting you in the picture

[EMAIL REMOVED] | http://www.synchromedia.co.uk