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September 2006

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2006.09.27 13:31 "Horizontal prediction for 16bit data", by Joris Van Damme
2006.09.27 13:36 "Re: Horizontal prediction for 16bit data", by Joris Van Damme
2006.09.27 22:56 "Re: Horizontal prediction for 16bit data", by Chris Cox
2006.09.27 23:09 "Re: Horizontal prediction for 16bit data", by Joris Van Damme
2006.10.09 12:49 "Re: Horizontal prediction for 16bit data", by Andrey Kiselev
2006.10.09 14:22 "Re: Horizontal prediction for 16bit data", by Joris Van Damme

2006.10.09 12:49 "Re: Horizontal prediction for 16bit data", by Andrey Kiselev

On 9/28/06, Joris <joris.at.lebbeke@skynet.be> wrote:
> > Reorder planes -> difference -> byte order swap to file order ->
> > compress And the reverse
> > Decompress -> byte order swap to host order -> undo-difference ->
> > reorder planes
>
> OK, that clears it up. Depredicting comes after resolving byte order in
> de decoding pipeline. My problem is that I take byte order into the next
> layer that deals with color and color convertion, so there is no
> resolution of image data byte order inside my TIFF codec at all. The
> reason was mainly that I didn't want to end up swapping bytes, only to
> next possibly swap them back when feeding the stuff directly into an
> encoder session.

Joris,

I am late on this topic, but I just want to clarify that libtiff works
in the way Chris described above. So it should create valid TIFF files
(at least readable with Photoshop).

Regards,
Andrey

-- 
Andrey V. Kiselev
ICQ# 26871517