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September 2009

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2009.09.07 10:53 "tiff2ps : LZW compression fails for some images", by Peter C
2009.09.07 17:03 "Re: tiff2ps : LZW compression fails for some images", by Andreas Kleinert
2009.09.08 02:07 "Re: tiff2ps : LZW compression fails for some images", by Peter C

2009.09.07 17:03 "Re: tiff2ps : LZW compression fails for some images", by Andreas Kleinert

Did you see my previous posting on LZW issues? Is your error similar?

Peter C schrieb:
> I found some LZW compress image (postscript files)  produce by  
> tiff2ps  does not interpret correctly on RIP or distiller. My current  
> project requires LZW to support postscript level 2. The tests is done  
> on libtiff 3.9.1 and image files is gray scale TIFF. RIP/distiller  
> tested, ghostscript 8.7, Preview.app (Mac OS X) and Acrobat 9  
> distiller, all fail for the some files.
> 
> Has anyone encounter this before ?
> 
> =====================
> 
> This is slightly off topic. After experimenting with many LZW encoding  
> implementations, some source codes on the net and did one on my own. I  
> am unable to get a reliable LZW encoding code for postscript file  
> generation. Somehow it is a mystery, on how LZW is implemented for  
> postscript.
> 
> 
> Peter C.
> 
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