> What about bmp-files? Compressed with bzip2 you have a better compression
> than JPEG ever has, _without_ any quality losses.
This is strictly impossible, except maybe for "constructed" files. Every
lossless compression format is limited by the file's entropy.
If the entropy is very low, lossless formats might gain an edge on lossy
ones, that achieve their higher compression by dropping some information so
as to decrease entropy, while still trying to place the loss in a way that
is hard to detect, as they might on the contrary _add_ entropy by their
assumptions about the image.
About your statement about bzip2/bmp ... Look :
-rw-r--r-- 1 becka users 2082870 Oct 9 12:52 forsaken.bmp
-rw-r--r-- 1 becka users 722694 Oct 9 12:53 forsaken.bmp.bz2
-rw-r--r-- 1 becka users 65811 May 24 18:21 forsaken.jpg
-rw-r--r-- 1 becka users 618286 Oct 9 12:53 forsaken.png
As said, there might be cases, where your method outperforms jpg, but these
are constructed, not plain scanned images.
CU, ANdy
--
= Andreas Beck | Email : <[EMAIL PROTECTED]> =
