Message-ID: 20000328112507.I24756@spans.gscc.nrcan.gc.ca
To: Daniel McCoy <mccoy@pixar.com>, Tiff Mailing List <tiff@olympiakos.com>
Subject: Re: Using 32bit floats within a tiff
From: Richard E Nairn <ren@spans.gscc.nrcan.gc.ca>
Date: Tue, 28 Mar 2000 11:25:07 -0700
In-Reply-To: <200003281813.KAA404627@moomin.pixar.com>; from mccoy@pixar.com on Tue, Mar 28, 2000 at 10:13:32AM -0800
References: <200003281813.KAA404627@moomin.pixar.com>
Sender: owner-tiff@olympiakos.com


Well, the good news is this that the software I am using it with supports
it (mostly cause I am writing some of it...) 

On Tue, Mar 28, 2000 at 10:13:32AM -0800, Daniel McCoy wrote:
> >I am new at programming with the tiff library. Is there an archive
> >available that explains using 32bit reals within tiffs?
> 
> The good news is that you just set TIFFTAG_BITSPERSAMPLE to 32
> and TIFFTAG_SAMPLEFORMAT to SAMPLEFORMAT_IEEEFP, and provide the right data,
> 0 is black, 1 is white.
> 
> The bad news is that few software packages will understand your files
> and that none of the compression options will do a very good job
> at reducing your file size.
> 
> Dan McCoy    Pixar    mccoy@pixar.com

-- 
Richard Nairn
Nairn Consulting
** Email ren@spans.gscc.nrcan.gc.ca   **
**       nairnr@cadvision.com         **
**       nconsulting@cadvision.com    **

