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Proceedings Paper

An automated approach for tone mapping operator parameter adjustment in security applications
Author(s): Lukáš Krasula; Manish Narwaria; Patrick Le Callet
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Paper Abstract

High Dynamic Range (HDR) imaging has been gaining popularity in recent years. Different from the traditional low dynamic range (LDR), HDR content tends to be visually more appealing and realistic as it can represent the dynamic range of the visual stimuli present in the real world. As a result, more scene details can be faithfully reproduced. As a direct consequence, the visual quality tends to improve. HDR can be also directly exploited for new applications such as video surveillance and other security tasks. Since more scene details are available in HDR, it can help in identifying/tracking visual information which otherwise might be difficult with typical LDR content due to factors such as lack/excess of illumination, extreme contrast in the scene, etc. On the other hand, with HDR, there might be issues related to increased privacy intrusion. To display the HDR content on the regular screen, tone-mapping operators (TMO) are used. In this paper, we present the universal method for TMO parameters tuning, in order to maintain as many details as possible, which is desirable in security applications. The method’s performance is verified on several TMOs by comparing the outcomes from tone-mapping with default and optimized parameters. The results suggest that the proposed approach preserves more information which could be of advantage for security surveillance but, on the other hand, makes us consider possible increase in privacy intrusion.

Paper Details

Date Published: 15 May 2014
PDF: 10 pages
Proc. SPIE 9138, Optics, Photonics, and Digital Technologies for Multimedia Applications III, 913803 (15 May 2014); doi: 10.1117/12.2054504
Show Author Affiliations
Lukáš Krasula, IRCCyN, CNRS, LUNAM Univ. (France)
Czech Technical Univ. in Prague (Czech Republic)
Manish Narwaria, IRCCyN, CNRS, LUNAM Univ. (France)
Patrick Le Callet, IRCCyN, CNRS, LUNAM Univ. (France)

Published in SPIE Proceedings Vol. 9138:
Optics, Photonics, and Digital Technologies for Multimedia Applications III
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet; Pasi Saarikko, Editor(s)

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