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- Give maintainership to submitter PR: ports/172339 Submitted by: nemysis <nemysis@gmx.ch>
25 lines
1.3 KiB
Plaintext
25 lines
1.3 KiB
Plaintext
OpenEXR is a high dynamic-range (HDR) image file format developed by
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Industrial Light & Magic for use in computer imaging applications.
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OpenEXR is used by ILM on all motion pictures currently in production.
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The first movies to employ OpenEXR were Harry Potter and the Sorcerers Stone,
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Men in Black II, Gangs of New York, and Signs. Since then, OpenEXR has become
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ILM's main image file format.
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OpenEXR's features include:
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* Higher dynamic range and color precision than existing 8- and 10-bit
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image file formats.
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* Support for 16-bit floating-point, 32-bit floating-point, and 32-bit
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integer pixels. The 16-bit floating-point format, called "half", is compatible
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with the half data type in NVIDIA's Cg graphics language and is supported
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natively on their new GeForce FX and Quadro FX 3D graphics solutions.
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* Multiple lossless image compression algorithms. Some of the included codecs
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can achieve 2:1 lossless compression ratios on images with film grain.
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* Extensibility. New compression codecs and image types can easily be added
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by extending the C++ classes included in the OpenEXR software distribution.
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New image attributes (strings, vectors, integers, etc.) can be added to
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OpenEXR image headers without affecting backward compatibility with existing
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OpenEXR applications.
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WWW: http://www.openexr.org/
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