Perceptually Dithered HDR for 8-Bit Interfaces

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE Mot. Imag. J
Volume: 130, No. 7, pp. 62–68
Abstract: In this study, we explore the performance of applying dither when quantizing high-dynamic range (HDR) achromatic images to lower bit depths and found that by applying “perceptual dither,” or dither in the International Telecommunication Union – Radiocommunication (ITU-R) BT.2100 ICTCP color representation, the bit depth necessary for visually consistent reproduction is reduced by 2 bits. We conclude that using perceptual dithering, the precision of a 10-bit source signal with only 8 bits, or the precision of a 12-bit source signal with only 10 bits, can be achieved.
Publication Date: 2021-08-01
DOI: 10.5594/JMI.2021.3087824
ISSN: Print: 1545-0279 | Electronic: 2160-2492
Link: https://doi.org/10.5594/JMI.2021.3087824
Author(s): Robin Atkins
bio
Robin Atkins is the director of the Applied Vision Science Group at Dolby Laboratories, Sunnyvale, CA, leading a team of researchers responsible for innovating new visual experiences and inventing video processing algorithms. His research encompasses studying and modeling the fundamentals of human vision through to developing complex software platforms. His work has been adopted in multiple international standards and has been integrated into millions of professional and consumer devices worldwide. He has degrees in engineering physics and electrical engineering.
Robert Wanat
bio
Robert Wanat received a PhD degree in computer science from Bangor University, Wales, U.K., in 2015, after receiving an MSc degree in computer science from the West Pomeranian University of Technology, Szczecin, Poland, in 2011. Since 2015, he has been a color scientist for Applied Vision Science Group at Dolby Laboratories, Sunnyvale, CA, where his research focused on visual perception, image quality, high-dynamic range (HDR) imaging, and deep learning. His work is incorporated in the Dolby Vision IQ algorithm and other parts of the Dolby Vision ecosystem.
Jaclyn Pytlarz
bio
Jaclyn Pytlarz is a staff researcher at Dolby Laboratories, Sunnyvale, CA, where she has worked within Dolby’s Applied Vision Science group since 2014. Her research includes vision science surrounding color mapping and display management algorithms for high-dynamic range and wide-color-gamut displays. She holds a BS degree in motion picture science from the Rochester Institute of Technology, Rochester, NY, and an MS degree in computational and mathematical engineering from Stanford University, Stanford, CA. She was awarded the IET Best Young Professional Award and the TVNewsCheck Technology Woman to Watch Award and is currently serving on the Education Advisory Committee for the Society of Motion Picture and Television Engineers.
Keyword(s): Banding, Dithering, HDR, Quantization
Copyright: © 2021 SMPTE

Bibliographic Reference(s)

Perceptual Signal Coding for More Efficient Usage of Bit Codes [Active]
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SMPTE RP 431-2 [Active, Stabilized]

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Robin Atkins, Robert Wanat, and Jaclyn Pytlarz; Perceptually Dithered HDR for 8-Bit Interfaces, SMPTE Motion Imaging Journal ( Volume: 130, Issue: 7, August 2021); SMPTE, 2021. Available at https://doi.org/10.5594/JMI.2021.3087824

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Robin Atkins, Robert Wanat, and Jaclyn Pytlarz; Perceptually Dithered HDR for 8-Bit Interfaces, SMPTE Motion Imaging Journal ( Volume: 130, Issue: 7, August 2021); SMPTE, 2021. Available at https://doi.org/10.5594/JMI.2021.3087824

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<span class="citation">Robin Atkins, Robert Wanat, and Jaclyn Pytlarz; <cite>Perceptually Dithered HDR for 8-Bit Interfaces</cite>, SMPTE Motion Imaging Journal ( Volume: 130, Issue: 7, August 2021); SMPTE, 2021. Available at <a href="https://doi.org/10.5594/JMI.2021.3087824" target="_blank" rel="noopener">https://doi.org/10.5594/JMI.2021.3087824</a></span>

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Robin Atkins, Robert Wanat, and Jaclyn Pytlarz; Perceptually Dithered HDR for 8-Bit Interfaces, SMPTE Motion Imaging Journal ( Volume: 130, Issue: 7, August 2021); SMPTE, 2021
doi: 10.5594/JMI.2021.3087824
url: https://doi.org/10.5594/JMI.2021.3087824

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Robin Atkins, Robert Wanat, and Jaclyn Pytlarz; <cite id="bib-10-5594-jmi-2021-3087824">Perceptually Dithered HDR for 8-Bit Interfaces</cite>, SMPTE Motion Imaging Journal ( Volume: 130, Issue: 7, August 2021); SMPTE, 2021
<span class="doi">10.5594/JMI.2021.3087824</span>
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