[Coco] [Color Computer] Small correction to a post PDF/DjVu

James Diffendaffer jdiffendaffer at yahoo.com
Mon Jul 18 17:08:02 EDT 2005


I referred to one as lossy and the other as non-lossy.
These are document files that can contain images, text and whatever in
various forms so they are neither lossy or non-lossy but support both.

Somewhere in the compression settings for PDF it seems to shift from
vector to image compression and I think the form of image compression
is more lossy than fractals or wavelets for the size.  If you were
working from a publishing program where the text and block graphics
were over a photo image the text could remain perfect even if the
photos weren't.
When working from a scan Acrobat has to guess as to content. 





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