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An evaluation of power transfer functions for HDR video compression
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Hatchett, Jonathan, Debattista, Kurt, Mukherjee, Ratnajit, Bashford-Rogers, Thomas and Chalmers, Alan (2018) An evaluation of power transfer functions for HDR video compression. The Visual Computer, 34 . pp. 167-176. doi:10.1007/s00371-016-1322-0 ISSN 0178-2789.
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Official URL: http://dx.doi.org/10.1007/s00371-016-1322-0
Abstract
High dynamic range (HDR) imaging enables the full range of light in a scene to be captured, transmitted and displayed. However, uncompressed 32-bit HDR is four times larger than traditional low dynamic range (LDR) imagery. If HDR is to fulfil its potential for use in live broadcasts and interactive remote gaming, fast, efficient compression is necessary for HDR video to be manageable on existing communications infrastructure. A number of methods have been put forward for HDR video compression. However, these can be relatively complex and frequently require the use of multiple video streams. In this paper, we propose the use of a straightforward Power Transfer Function (PTF) as a practical, computationally fast, HDR video compression solution. The use of PTF is presented and evaluated against four other HDR video compression methods. An objective evaluation shows that PTF exhibits improved quality at a range of bit-rates and, due to its straightforward nature, is highly suited for real-time HDR video applications.
Item Type: | Journal Article | ||||||||||
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Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
Library of Congress Subject Headings (LCSH): | Video compression, High dynamic range imaging | ||||||||||
Journal or Publication Title: | The Visual Computer | ||||||||||
Publisher: | Springer Berlin Heidelberg | ||||||||||
ISSN: | 0178-2789 | ||||||||||
Official Date: | February 2018 | ||||||||||
Dates: |
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Volume: | 34 | ||||||||||
Page Range: | pp. 167-176 | ||||||||||
DOI: | 10.1007/s00371-016-1322-0 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||
Copyright Holders: | Jonathan Hatchett | ||||||||||
Date of first compliant deposit: | 18 October 2016 | ||||||||||
Date of first compliant Open Access: | 18 October 2016 | ||||||||||
Funder: | Royal Society (Great Britain) | ||||||||||
Open Access Version: |
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