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From: "Grissom, Ed" <ed.grissom@intergraph.com>
To: Eric VERGNAUD <eric.vergnaud@jlynx.com>, tiff@remotesensing.org
Subject: RE: [Tiff] TIFF Pyramid
Date: Mon, 13 Dec 2004 09:07:43 -0600
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> I'm speaking of the TIFF pyramid as provided by Adobe 
> Photoshop. Since Adobe
> owns the tiff specs, I guess that's the only official scheme.


Well, the spec defines two different ways(*).  
Photoshop used to write one way, now it writes another, but it reads both. 
The GIS imaging world still uses the old way pretty much exclusively. We
rarely have multiple main images in a file. 


(*) Actually, the spec says one way, but an update says "here is a new way
that is better if you have multiple main images in a file"

-- 
ed grissom
ed.grissom@intergraph.com 
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