AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

2004.12.11 02:06 "[Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.11 15:35 "Re: [Tiff] TIFF Pyramid", by Bob Friesenhahn
2004.12.12 11:53 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.12 16:57 "Re: [Tiff] TIFF Pyramid", by Bob Friesenhahn
2004.12.12 19:06 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.13 15:07 "RE: [Tiff] TIFF Pyramid", by Grissom, Ed
2004.12.13 15:16 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD
2004.12.14 20:30 "Re: [Tiff] TIFF Pyramid", by Andrey Kiselev
2004.12.13 15:16 "RE: [Tiff] TIFF Pyramid", by Grissom, Ed
2004.12.11 17:41 "Re: [Tiff] TIFF Pyramid", by Joris
2004.12.12 11:56 "Re: [Tiff] TIFF Pyramid", by Eric VERGNAUD

2004.12.13 15:16 "RE: [Tiff] TIFF Pyramid", by Grissom, Ed

Let me rephrase myself...

Photoshop used to write one way, now it writes another, but it reads both.

"I believe that Photoshop reads both, but I am not sure what it writes"

The GIS imaging world still uses the old way pretty much exclusively.

"My company is in the GIS Imaging world and we use the old way pretty much exclusively"

--
ed grissom

ed.grissom@intergraph.com

> -----Original Message-----
> From: tiff-bounces@remotesensing.org
> [mailto:tiff-bounces@remotesensing.org] On Behalf Of Grissom, Ed
> Sent: Monday, December 13, 2004 9:08 AM
> To: Eric VERGNAUD; tiff@remotesensing.org
> Subject: RE: [Tiff] TIFF Pyramid

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"