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TIFF and LibTiff Mail List Archive

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1999.02.02 15:30 "Basic question regarding PackBits...", by Takao Matsuda
1999.02.02 15:32 "Re: Basic question regarding PackBits...", by Helge Blischke
1999.02.02 17:00 "Re: Basic question regarding PackBits...", by Ed Grissom
1999.02.02 17:07 "Re: Basic question regarding PackBits...", by Helge Blischke

1999.02.02 15:32 "Re: Basic question regarding PackBits...", by Helge Blischke

I have a question regarding PackBits compression. There might be some description about this somewhere, but I haven't found it so far, so...

there is a description of the algorithm in the TIFF V6 spec, wich is - I assume - at Adobe's web site somewhere.

When image data is compressed in TIFFWriteEncodedStrip() by PackBits algorithm, is the data compressed in the unit of a line or in the unit of a strip?

Data is _always_ cpmpressed in units of strips or tiles, respectively

Helge

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