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Proceedings Paper

Coding of high dynamic range images in JPEG XR / HD Photo
Author(s): Sridhar Srinivasan; Zhi Zhou; Gary J. Sullivan; Robert Rossi; Shankar Regunathan; Chengjie Tu; Anirban Roy
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Paper Abstract

High Dynamic Range (HDR) imaging support is one of the major features for the emerging draft JPEG XR standard. JPEG XR is being standardized within the JPEG committee based on Microsoft technology known as HD Photo. JPEG XR / HD Photo is primarily an integer-based coding technology design, accepting integer valued samples at the encoder and producing integer valued samples at the decoder, with internal processing entirely in the integer space. Yet, it can support compression of multiple HDR formats, including 16- and 32-bit float, 16-bit and 32-bit signed and unsigned integer, and RGBE. Further, JPEG XR can enable lossless compression of some HDR formats such as 16-bit signed and unsigned, 16-bit float and RGBE. This paper describes how HDR formats are handled in JPEG XR. It examines in depth how these various HDR formats are converted to and from integer valued samples within the JPEG XR codec, and the internal processing of these HDR formats. This paper describes how JPEG XR provides flexible ways to compress HDR formats within the same codec framework as integer-valued formats, while maintaining from the high compression efficiency and low computational complexity.

Paper Details

Date Published: 15 September 2008
PDF: 8 pages
Proc. SPIE 7073, Applications of Digital Image Processing XXXI, 707315 (15 September 2008); doi: 10.1117/12.797096
Show Author Affiliations
Sridhar Srinivasan, Microsoft Corp. (United States)
Zhi Zhou, Microsoft Corp. (United States)
Gary J. Sullivan, Microsoft Corp. (United States)
Robert Rossi, Microsoft Corp. (United States)
Shankar Regunathan, Microsoft Corp. (United States)
Chengjie Tu, Microsoft Corp. (United States)
Anirban Roy, Microsoft Corp. (United States)

Published in SPIE Proceedings Vol. 7073:
Applications of Digital Image Processing XXXI
Andrew G. Tescher, Editor(s)

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