Faithful presentation of luminance contrast: evaluation of photographic and computational display methods

Erich Phillips; Greg Ward; Thomas J. Ayres

doi:10.1117/12.473898

17 June 2003 Faithful presentation of luminance contrast: evaluation of photographic and computational display methods

Erich Phillips, Greg Ward, Thomas J. Ayres

Proceedings Volume 5007, Human Vision and Electronic Imaging VIII; (2003) https://doi.org/10.1117/12.473898
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

Representations necessarily lose some of the visual information available in corresponding real-world scenes. This paper will discuss evaluations of the extent to which luminance contrast and visibility is preserved with three different methods for representing real-world scenes. Method one involves using psychophysical data from contrast charts to select the best print from among a density-varied series of photographic prints. The second and third methods involve extending the dynamic range of the representation by using High Dynamic Range Image (HDRI) techniques. HDRI's can be created by combining multiple overlapping exposures of a scene, or via computer simulation. In method two, algorithms are used to compress the luminance information in the HDRI into the luminance range available in the display, while preserving visible contrast as much as possible. The third method uses a wide-field, high-dynamic-range viewer to present an image with a much wider dynamic range than is available in a photographic print or a CRT display. Each method represents an improvement over simple photographic representation. In conjunction with appropriate instructions on how to interpret the images and the extent to which the images can be regarded as faithful, methods such as these can support practical decisions in visual design and reconstruction.

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Erich Phillips, Greg Ward, and Thomas J. Ayres "Faithful presentation of luminance contrast: evaluation of photographic and computational display methods", Proc. SPIE 5007, Human Vision and Electronic Imaging VIII, (17 June 2003); https://doi.org/10.1117/12.473898

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