2008.09.07 23:18 "[Tiff] SAMPLEFORMAT_IEEEFP", by acanicio

2008.09.07 23:34 "Re: [Tiff] SAMPLEFORMAT_IEEEFP", by Bob Friesenhahn

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/