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The perceived intra-frame dynamic range in a cinema environment

(2016)
Author
Organization
Project
HD²R
Abstract
When considering a higher contrast and brightness range in cinema, it's important to understand the limits of the Human Visual System (HVS) under cinema specific conditions. A user experiment with 36 participants was conducted in a cinema theatre. We assessed how the perceivable dynamic range evolved with different background gray levels and with the presence of local highlights in the image; how the size, position and intensity of these highlights affected the results. We found that the perceptual visibility of details in black depends greatly upon the image composition and the average luminance of a given image or image sequence. We found that in a fully dark frame, the average person can detect black details down to .005 Cd/m². However, if a 1% gray background in the central field of view is presented this rises to .009 Cd/m². and with a 10% gray background the black level threshold further increases to .015 Cd/m². In addition to the limitations of the HVS, one needs to consider the limitations of a theatrical projection setup where bright elements in the image via reflections on the walls, ceiling, floor, seats and audience contaminate the black elements of the image.
Keywords
high dynamic range, cinema, visual perception

Citation

Please use this url to cite or link to this publication:

Chicago
Maes, Dirk, Bruno Vandevelde, Goran Stojmenovik, Tine Vyvey, and Jan Van Looy. 2016. “The Perceived Intra-frame Dynamic Range in a Cinema Environment.” In .
APA
Maes, Dirk, Vandevelde, B., Stojmenovik, G., Vyvey, T., & Van Looy, J. (2016). The perceived intra-frame dynamic range in a cinema environment. Presented at the SMPTE 2016 Annual Technical Conference & Exhibition.
Vancouver
1.
Maes D, Vandevelde B, Stojmenovik G, Vyvey T, Van Looy J. The perceived intra-frame dynamic range in a cinema environment. 2016.
MLA
Maes, Dirk, Bruno Vandevelde, Goran Stojmenovik, et al. “The Perceived Intra-frame Dynamic Range in a Cinema Environment.” 2016. Print.
@inproceedings{8060248,
  abstract     = {When considering a higher contrast and brightness range in cinema, it's important to understand the limits of the Human Visual System (HVS) under cinema specific conditions. A user experiment with 36 participants was conducted in a cinema theatre. We assessed how the perceivable dynamic range evolved with different background gray levels and with the presence of local highlights in the image; how the size, position and intensity of these highlights affected the results. We found that the perceptual visibility of details in black depends greatly upon the image composition and the average luminance of a given image or image sequence. We found that in a fully dark frame, the average person can detect black details down to .005 Cd/m{\texttwosuperior}. However, if a 1\% gray background in the central field of view is presented this rises to .009 Cd/m{\texttwosuperior}. and with a 10\% gray background the black level threshold further increases to .015 Cd/m{\texttwosuperior}. In addition to the limitations of the HVS, one needs to consider the limitations of a theatrical projection setup where bright elements in the image via reflections on the walls, ceiling, floor, seats and audience contaminate the black elements of the image.},
  author       = {Maes, Dirk and Vandevelde, Bruno and Stojmenovik, Goran  and Vyvey, Tine and Van Looy, Jan},
  keyword      = {high dynamic range,cinema,visual perception},
  language     = {eng},
  location     = {Hollywood, CA},
  title        = {The perceived intra-frame dynamic range in a cinema environment},
  year         = {2016},
}