Hi Thomas,
The quality of the picture is REALLY not important. It will just contain plain text, so resolution/number of colours etc. etc. is absolutely not important. As long as the text can be seen it is enough.
The reason why I think it can be compressed this much is that
the TIFF without any compressing is 4 GB. But I first created a PDF
with FOP and then found a tool that converts PDF to TIFF. With this tool, the TIFF-image became 20 000 bytes. The problem is that
this tool is NOT for free...
What pixel-size did that TIFF image have?
If you're dabbling in TIFF you should try to install libtiff (works on any Unix and Windows AFAIK) which has a small program "tiffinfo" that prints a lot of useful information about a TIFF image.
You can get rather high compression rates in TIFF by using bilevel (black and white) with CCITT-G4 encoding if your images have large white or black areas.
Otherwise the only way to reach such a compression rate is lossy encoding like JPEG.
For doing anything image-related in Java have a look at:
http://www.geocities.com/marcoschmidt.geo/java-image-coding.html
Cheers
Robert
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