Projects / OpenEXR


OpenEXR is a high dynamic range (HDR) image file format developed by Industrial Light & Magic for use in computer imaging applications. It includes support for 16-bit floating-point pixels (compatible with NVIDIA's Cg shader language "half" datatype), several lossless compression algorithms, and extensible image metadata attributes.

Operating Systems

Recent releases

  •  25 Jul 2012 17:18

    Release Notes: Pixels can now store a variable length list of samples. Files can now contain a number of separate, but related, images in one file. A namespacing mechanism has been added to I1mBase libraries. Assorted bugfixes.

    •  12 Sep 2011 17:57

      Release Notes: This release adds support for stereoscopic images and 64-bit Windows, bugfixes for buffer overruns and assorted minor bugs, and minor additions and optimizations.

      •  17 Mar 2008 23:24

        Release Notes: This release reduces generational loss in B44- and B44A-compressed images. B44A compression has been added. Various bugs have been fixed, including a buffer overrun.

        •  26 Oct 2006 09:55

          Release Notes: This release added support for multithreaded reading and writing of files, Intel-based Mac OS X, and Visual Studio 2005. Building against OpenEXR headers was cleaned up. Handling of incomplete or damaged files was improved. IRIX, OSF/1, SunOS, Mac OS X prior to 10.3, and GCC prior to 3.3 were deprecated. New features were added to the documentation, and many bugs in the code, build system, and documentation were fixed.

          •  29 Jun 2006 09:27

            Release Notes: Support for multithreaded file reading and writing, support for Intel-based OS X systems, and support for Visual Studio 2005 was added. Better handling was implemented for PLATFORM_* and HAVE_* macros. The documentation was updated. Bugs related to the handling of incomplete and damaged files were fixed. There were also numerous bugfixes and cleanups in the autoconf-based build system. Support for IRIX, OSF/1, SunOS, and OS/X prior to 10.3 was removed. Support for versions of GCC prior to 3.3 was also removed.


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