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OpenEXR

OpenEXR

OpenEXR is a high dynamic-range (HDR) image file format developed by Industrial Light & Magic for use in computer imaging applications. The format has 16-bit floating-point color component values, supports 32-bit unsigned integer and 32-bit floating-point data types, and several lossless compression methods.

It provides the following tools:

  • exrheader, a utility for dumping header information
  • exrstdattr, a utility for modifying OpenEXR standard attributes
  • exrmaketiled, for generating tiled and rip/mipmapped images
  • exrenvmap, for creating OpenEXR environment maps
  • exrmakepreview, for creating preview images for OpenEXR files
  • exrdisplay, a sample application for viewing OpenEXR images on a display at various exposure settings
  • IlmImf, a library that reads and writes OpenEXR images
  • Half, a C++ class for manipulating half values as if they were a built-in C++ data type
  • Imath, a math library with support for matrices, 2d- and 3d-transformations, solvers for linear/quadratic/cubic equations, and more

 OpenEXR 2.1.0

Price
Free to download

Size
13.0MB
License

Modified BSD License

Developer
Florian Kainz, Rod Bogart, Drew Hess, Paul Schneider, Bill Anderson, Wojciech Jarosz, Andrew Kunz, and many contributors

Website
www.openexr.com

System Requirements
zlib
IlmBase

Support Sites:
Documentation, Tutorial, Mailing Lists

Selected Reviews:

Features include:

  • Higher dynamic range and colour precision than existing 8- and 10-bit image file formats
  • Support for the "half" 16-bit floating-point pixel format
  • Multiple lossless image compression algorithms. Some of the included codecs can achieve 2:1 lossless compression ratios on images with film grain
  • Extensibility. New compression codecs and image types can easily be added by extending the C++ classes included in the OpenEXR software distribution. New image attributes (strings, vectors, integers, etc.) can be added to OpenEXR image headers without affecting backward compatibility with existing OpenEXR applications
Return to HDR Imaging Home Page

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Last Updated Tuesday, April 22 2014 @ 04:09 PM EDT


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