[bug-gs] request for info on level 3 masked image with encoded data streams

Dan Bloomberg bloombrg at pacbell.net
Fri Dec 26 22:07:25 PST 2003


Hello,

Do you have an example of PostScript level 3
output with an explicit (binary) mask that is
used to select part of an RGB (or 8 bpp) image?

I'm particularly interested in having both the
mask and image be encoded.  For example, the
1 bpp mask could be CCITT fax encoded, so that
it requires the CCITTFaxDecode filter, and the
rgb image could be an encoded jpeg array, so
that it requires the DCTDecode filter.  Both
binary streams could be further encoded with
ascii85.

Do you produce anything like this in, for
example, your Ghostscript regression tests.

Thanks.

   -- Dan Bloomberg



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