Paul Jones wrote:
 
[snip]
> is way too large. Any thogthts about the advantages or disadvantages of
> JPEG or TIFF or PNG?
> 

PNG is probably best for newspaper scans. It is a verbatim (lossless) format and
compression is almost as good as JPEG (sometimes even better than a 100% quality
JPEG). The problem is that PNG is not as widely supported as JPEG, and many
viewers do not support it fully (e.g. they ignore the gamma information stored
in the PNG file, and may be confused if an alpha channel is present).

JPEG is a surefire format in that it is very widely supported. However, it is a
lossy format. It was developed primarily for storing photos, and is not well
suited for high-contrast images, such as b/w text. Verey high quality JPEG shoud
work OK, but you lose the compression advantage over PNG.

TIFF is a very flexible format, but its main advantages are in image processing
and printing, not bimap storage. It supports some compression, but file sizes
will remain large.

-- 
Margus Ramst

Personal e-mail: mar### [at] peakeduee
TAG (Team Assistance Group) e-mail: mar### [at] tagpovrayorg

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