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November 2006
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2006.11.13 22:16 "Re: Cannot read 96 bpp tiff image", by Chris Cox
(bits per pixel is a meaningless number, only the bits/channel is useful) You can check the TIFF structure with Photoshop CS2 (which can read 32 bit float images). But using the LibTIFF RGBA interface, I don't think you can read those files. You'll have to use the more detailed interfaces to get the raw data. Chris -----Original Message----- From: tiff-bounces@lists.maptools.org on behalf of Kacem Bekri Sent: Mon 11/13/2006 2:04 AM To: tiff@lists.maptools.org Subject: [Tiff] Cannot read 96 bpp tiff image Hello, I have a little problem with libtiff, and I hope anyone can help me. I am using Mental Ray plugin in Maya software which give me only images in tiff format. Images are 32 bits per sample (RGB - 96 bpp) When I am using LibTiff to load may image, it writes: Lightmap_HDR_top.tif: Sorry, can not handle images with 32-bit samples. I am using Libtiff v3.8.2 in win32 dll mode. (In visual C++ 2005) It works well for standard tiff files. I think that libtiff know how to load 96 bits tiff because, FreeImage project is using libtiff and can handle 96-bit images since v3.7.2. http://freeimage.sourceforge.net/changeslog.html Thanks for your help. Kacem Bekri