AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

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2022.04.23 19:59 "[Tiff] questions about LAB encoded TIFF", by Sylvain Ard
2022.04.27 11:49 "Re: [Tiff] questions about LAB encoded TIFF", by Sylvain Ard
2022.04.27 12:05 "Re: [Tiff] questions about LAB encoded TIFF", by John
2022.04.27 12:07 "Re: [Tiff] questions about LAB encoded TIFF", by Sylvain Ard
2022.04.27 12:50 "Re: [Tiff] questions about LAB encoded TIFF", by John
2022.04.27 13:21 "Re: [Tiff] questions about LAB encoded TIFF", by Sylvain Ard
2022.04.28 12:08 "Re: [Tiff] questions about LAB encoded TIFF", by Sylvain Ard
2022.04.27 12:40 "Re: [Tiff] questions about LAB encoded TIFF", by Joris Van Damme

2022.04.27 12:05 "Re: [Tiff] questions about LAB encoded TIFF", by John

Hello Sylvian,

  1. : I want to know with libtiff the LAB encodage of the TIFF ie CIELAB, ICCLab ou JPEG Fax

It's D65 CIELAB.

  1. : I want to know the bits number per LAB channel by libtiff
  2. : I want to get the RAW LAB channels values of a pixel with libtiff

It's usually 8 or 16 bits unsigned, with L 0 - 100 and ab +/- 128 all scaled to 0 - 255 or 0 - 65535 in the obvious way.

John