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Testing tone mapping operators with human-perceived reality

[+] Author Affiliations
Akiko Yoshida, Volker Blanz, Karol Myszkowski, Hans-Peter Seidel

Max-Planck-Institut für Informatik, Saarbrücken, Germany

J. Electron. Imaging. 16(1), 013004 (March 15, 2007). doi:10.1117/1.2711822
History: Received November 24, 2005; Revised October 16, 2006; Accepted November 08, 2006; Published March 15, 2007
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A number of successful tone mapping operators for contrast compression have been proposed due to the need to visualize high dynamic range (HDR) images on low dynamic range (LDR) devices. They were inspired by fields as diverse as image processing, photographic practice, and modeling of the human visual systems (HVS). The variety of approaches calls for a systematic perceptual evaluation of their performance. We conduct a psychophysical experiment based on a direct comparison between the appearance of real-world scenes and HDR images of these scenes displayed on an LDR monitor. In our experiment, HDR images are tone mapped by seven existing tone mapping operators. The primary interest of this psychophysical experiment is to assess the differences in how tone mapped images are perceived by human observers and to find out which attributes of image appearance account for these differences when tone mapped images are compared directly with their corresponding real-world scenes rather than with each other. The human subjects rate image naturalness, overall contrast, overall brightness, and detail reproduction in dark and bright image regions with respect to the corresponding real-world scene. The results indicate substantial differences in the perception of images produced by individual tone mapping operators. We observe a clear distinction between global and local operators—in favor of the latter—and we classify the tone mapping operators according to naturalness and appearance attributes.

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© 2007 SPIE and IS&T

Citation

Akiko Yoshida ; Volker Blanz ; Karol Myszkowski and Hans-Peter Seidel
"Testing tone mapping operators with human-perceived reality", J. Electron. Imaging. 16(1), 013004 (March 15, 2007). ; http://dx.doi.org/10.1117/1.2711822


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