> Thanks Dennis. I am of the programming style of the 'man who plays
Bethovens
> 5th' in Peter Cooke and Dudley Moore skit; if that makes sense.
> So your pointers are very helpful.
>
> Pat that is the component JpgComment that I am modifying - it is the basic
> file i/o routines, and doesnt cater for in-memory jpeg modification - yet.
> Lets know if you want a copy when I have finished it.
>
> Incidentally, whilst searching for the jpeg protocols, I found out that
jpeg
> can be a lossy format insofar as depending on what standard one is using,
> the file is deteriorated on each save, due to compression losses. However
> GIF does not suffer from that problem. Apparently the best system
> non-licensed is PNG, but there is not so much use of that around yet.
JPEG is lossy and intended as such. GIF and PNG are nor lossy but do not
provide the compression ratios possible with JPEG. There is JPEG2000
sitting
around in development (try the example page that shows massive improvements
in
JPEGs less-lossy compression)...
http://ltswww.epfl.ch/~neximage/decoder/applets/
--
Aaron@home
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