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Date: Sun, 7 Sep 2008 18:34:53 -0500 (CDT)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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To: acanicio <acanicio@astrosnap.com>
Subject: Re: [Tiff] SAMPLEFORMAT_IEEEFP
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On Sun, 7 Sep 2008, acanicio wrote:
>
> But I have no luck with floating point values. I use SAMPLEFORMAT_IEEEFP
> sample format along with 32 bits per sample.
> All the pixel values are issued from an 8 bit/sample image, with no
> conversion or multiplication applied to them.
> When I open the file with some well known image editor, the image is
> completely saturated, all white with values 32767...
> Where should I look ?

Most applications don't support floating point images like this.  My 
application (GraphicsMagick) does, but in a somewhat crude way. Some 
applications like GDAL are designed for floating point and should do a 
lot better.

Recent Photoshop (CS2 and later) provide some support for floating 
point images.

Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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