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OpenEXR - High dynamic-range (HDR) image file format

OpenEXR is a high dynamic-range (HDR) image file format developed by Industrial Light & Magic. It is used on all motion pictures currently in production, and is now ILM's main image file format. The package includes the following libraries and tools: IlmImf, Half, Imath, exrdisplay, exrdisplay, exrheader, exrstdattr, exrmaketiled, exrenvmap, and exrmakepreview.

OpenEXR's has a higher dynamic range and color precision than existing 8- and 10-bit image file formats. It supports 16-bit floating-point, 32-bit floating-point, and 32-bit integer pixels. It includes multiple lossless image compression algorithms, some of which can achieve 2:1 lossless compression ratios on images with film grain. New compression codecs and image types can be added by extending its C++ classes. New image attributes can be added to OpenEXR image headers without affecting backward compatibility.

Obtaining

Web pagehttp://www.openexr.com/
Source tarball http://savannah.nongnu.org/download/openexr/OpenEXR-1.2.1.tar.gz
Source informationhttp://savannah.nongnu.org/download/openexr/
Version 1.2.1 (stable) released on 2004-06-05
Licensed under a 3-clause BSD-style license.
This is not a GNU package.

Documentation

Developer API guide available in HTML format from http://www.openexr.com/api.html; Developer API guide available in printable format fromhttp://www.openexr.com/api.print.html
Support contacts

Announce List<openexr-announce@nongnu.org> http://lists.nongnu.org/mailman/listinfo/openexr-announce
Help List<openexr-users@nongnu.org> http://lists.nongnu.org/mailman/listinfo/openexr-users
Developer List<openexr-devel@nongnu.org> http://lists.nongnu.org/mailman/listinfo/openexr-devel

Project contacts

Developers
  • See the AUTHORS file in the distribution for a complete list
Sponsors
  • Industrial Light & Magic

Related information

Interfaceslibrary
ProgramsIlmImf, Half, Imath, exrdisplay, exrheader, exrstdattr, exrmaketiled, exrenvmap, exrmakepreview
Source languagesC++
Related programsCinePaint, exrtools

Entry information

License verified byJanet Casey <jcasey@gnu.org> on 2004-07-15
Entry compiled byJanet Casey <jcasey@gnu.org>

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