Evaluation of Tone-Mapping Operators for HDR Video Under Different Ambient Luminance Levels

Since high dynamic range (HDR) displays are not yet widely available, there is still a need to perform a dynamic range reduction of HDR content to reproduce it properly on standard dynamic range (SDR) displays. The most common techniques for performing this reduction are termed tone‐mapping operator...

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Bibliographic Details
Published in:Computer graphics forum Vol. 34; no. 8; pp. 38 - 49
Main Authors: Melo, M., Bessa, M., Debattista, K., Chalmers, A.
Format: Journal Article
Language:English
Published: Oxford Blackwell Publishing Ltd 01.12.2015
Subjects:
Analysis
Computer graphics
Displays
Dynamic range
Handheld computers
high dynamic range/tone mapping
I.3.3 [Computer Graphics]: Picture/Image Generation-Display algorithms
I.4.0 [Computer Graphics]: General-Image displays
image and video processing
Luminance
Mobile communication systems
Operators
Reduction
Screens
Studies
VDTs
Video display terminals
ISSN:0167-7055, 1467-8659
Online Access:Get full text
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Summary:Since high dynamic range (HDR) displays are not yet widely available, there is still a need to perform a dynamic range reduction of HDR content to reproduce it properly on standard dynamic range (SDR) displays. The most common techniques for performing this reduction are termed tone‐mapping operators (TMOs). Although mobile devices are becoming widespread, methods for displaying HDR content on these SDR screens are still very much in their infancy. While several studies have been conducted to evaluate TMOs, few have been done with a goal of testing small screen displays (SSDs), common on mobile devices. This paper presents an evaluation of six state‐of‐the‐art HDR video TMOs. The experiments considered three different levels of ambient luminance under which 180 participants were asked to rank the TMOs for seven tone‐mapped HDR video sequences. A comparison was conducted between tone‐mapped HDR video footage shown on an SSD and on a large screen SDR display using an HDR display as reference. The results show that there are differences between the performance of the TMOs under different ambient lighting levels and the TMOs that perform well on traditional large screen displays also perform well on SSDs at the same given luminance level. Since high dynamic range (HDR) displays are not yet widely available, there is still a need to perform a dynamic range reduction of HDR content to reproduce it properly on standard dynamic range (SDR) displays. The most common techniques for performing this reduction are termed tone‐mapping operators (TMOs). Although mobile devices are becoming widespread, methods for displaying HDR content on these SDR screens are still very much in their infancy. While several studies have been conducted to evaluate TMOs, few have been done with a goal of testing small screen displays (SSDs), common on mobile devices. This paper presents an evaluation of six state‐of‐the‐art HDR video TMOs.
Bibliography:ark:/67375/WNG-XR7JD79H-J
ArticleID:CGF12606
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ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.12606