Toong See Wan wrote:
> I would like to know how i can manupilate jpeg images and compress it to
> jpeg standard after i creqate a new pic from an old one?
The IJG Jpeg library is probably what you want,
It does read (decompress) and write(compress) files
in the jpeg graphic format. It's easy to use and is provided
with a good documentation.
If you don't want to write the "interface" to the jpeg
library yourself, there's another library called imlib,
which has a generic interface for reading ( and writing ?)
files in different formats ( jpeg, gif, png, tiff, xpm, ppm ...).
You'll find it somewhere at the gnome web site ( http://www.gnome.org)
You might also look at the gimp source code for
some image filters examples.
Good luck
