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  4. JPEG XT: A Compression Standard for HDR and WCG Images [Standards in a Nutshell]
 
research article

JPEG XT: A Compression Standard for HDR and WCG Images [Standards in a Nutshell]

Artusi, Alessandro
•
Mantiuk, Rafal
•
Richter, Thomas
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2016
IEEE Signal Processing Magazine

High bit depth data acquisition and manipulation have been largely studied at the academic level over the last 15 years and are rapidly attracting interest at the industrial level. An example of the increasing interest for high-dynamic range (HDR) imaging is the use of 32-bit floating point data for video and image acquisition and manipulation that allows a variety of visual effects that closely mimic the real-world visual experience of the end user [1] (see Figure 1). At the industrial level, we are witnessing increasing traction toward supporting HDR and wide color gamut (WCG). WCG leverages HDR for each color channel to display a wider range of colors. Consumer cameras are currently available with a 14- or 16-bit analog-to-digital converter. Rendering devices are also appearing with the capability to display HDR images and video with a peak brightness of up to 4,000 nits and to support WCG (ITU-R Rec. BT.2020 [2]) rather than the historical ITU-R Rec. BT.709 [3]. This trend calls for a widely accepted standard for higher bit depth support that can be seamlessly integrated into existing products and applications. While standard formats such as the Joint Photographic Experts Group (JPEG) 2000 [5] and JPEG XR [6] offer support for high bit depth image representations, their adoption requires a nonnegligible investment that may not always be affordable in existing imaging ecosystems, and induces a difficult transition, as they are not backward-compatible with the popular JPEG image format.

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Type
research article
DOI
10.1109/MSP.2015.2506199
Web of Science ID

WOS:000372398000015

Author(s)
Artusi, Alessandro
Mantiuk, Rafal
Richter, Thomas
Korshunov, Pavel
Hanhart, Philippe  
Ebrahimi, Touradj  
Agostinelli, Massimiliano
Date Issued

2016

Publisher

Institute of Electrical and Electronics Engineers

Published in
IEEE Signal Processing Magazine
Volume

33

Issue

2

Start page

118

End page

124

Subjects

JPEG XT

•

High Dynamic Range imaging

•

image compression

•

image quality assessment

•

subjective evaluations

•

objective metrics

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GR-EB  
Available on Infoscience
December 3, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/121460
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