2009.12.28 19:46 "Re: [Tiff] bug in tiff2pdf, when handling Lab images", by Manlio Perillo

2009.12.28 17:12 "Re: [Tiff] bug in tiff2pdf, when handling Lab images", by Manlio Perillo

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Lee Howard ha scritto:

I'm reporting the bug here, since on the libtiff web site (http://www.libtiff.org/bugs.html), the link to the bug traker is broken:

That's the "old" domain before it was hijacked. Now look for:

http://remotesensing.org/libtiff/

Ah, ok; thanks.

The problem is with tiff2pdf writing two times the WhitePoint entry in the Lab dictionary:

/ColorSpace [/Lab <<

/WhitePoint

[0.9643 1.0000 0.8251]

[0.9643 1.0000 0.8251]

> /Range [-127 127 -127 127]
>
>>> ]

If you look at the code this appears to be intentional:

Are you sure that this is the problem? Are you sure that it's not something else?

Yes, I'm sure.

Try to convert this image: http://www.colour.org/tc8-03/images/ski_pg/Ski_TC8-03_abs.tif

It will fails to open with Acrobat Reader.

Ghostscript will report an human readable error:

File has an unbalanced >> (close dictionary).

Removing the duplicate [0.9643 1.0000 0.8251] solves the problem; since it is not valid PDF syntax.

Thanks,

Lee.

Regards Manlio

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