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From: Andrey Kiselev <dron@ak4719.spb.edu>
Date: Mon, 9 Jul 2007 19:35:03 +0400
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Subject: Re: [Tiff] 16-Bit-Per-Channel Lossless Compression
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Status:   

On Thu, Jul 05, 2007 at 06:46:18PM -0700, Chris Cox wrote:
> processing IMG_2948.Flowers1.pbm
> width: 3888, height: 2592, channels: 3, 16 bits per sample
> uncompressed size: 60466176 bytes
> RGB, no predictor, interleaved, LZW: 72067928 bytes
> RGB, no predictor, interleaved, ZIP: 55539057 bytes
> RGB, no predictor, planar, LZW: 68826695 bytes
> RGB, no predictor, planar, ZIP: 53133761 bytes
> YCC1, upLeftMinusMedian diff, bytesplit, planar, ZIP: 27850499 bytes
> YCC1, MED diff, bytesplit, planar, ZIP: 27852858 bytes
> YCC1, paeth2 diff, bytesplit, planar, ZIP: 27981334 bytes
> YCC1, paeth diff, bytesplit, planar, ZIP: 28005222 bytes
> YCC1, avgUpLeft diff, bytesplit, planar, ZIP: 28054460 bytes
> 
> All lossless, and I think I can still do better.

Chris,

Is it possible to add byte splitting as a new predictor type in TIFF?

Best regards,
Andrey

-- 
Andrey V. Kiselev
ICQ# 26871517
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