A Model for Very Wide Gamut HDR Displays that Accounts for the H-K Effect

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2020, No. 11, pp. 1–15
Abstract: We have developed a test method and computational model for predicting the brightness achieved by HDR (high dynamic range) televisions and computer monitors, in particular those with materials that feature primary colors having high spectral purity. The technological integration of quantum dot materials and emissive pixel lighting is expanding the color gamut level to attain a degree of performance unmatched in today's consumer and professional displays. These displays exhibit highly significant improvements in saturation and brightness due in part to the H-K (Helmholtz-Kohlrausch) effect, where people perceive some colors—notably reds and blues—as far brighter than its reference white. — We achieved a suitable methodology by blending the iCAM06 computational model² originally designed for HDR image evaluation with an improved treatment of vivid colors. Our data collection relied on a one-of-a-kind, yet commercially available 2D spectroradiometer that captures up to 1.4 million samples of spectral data samples across any image, an achievement impossible to attain manually. Our approach coupled nicely with the filter image-processing steps in iCAM06. Finally, we extracted image brightness for white, red and blue for determining the SEMI Perceptual Contrast Length³ (PCL) to assess the predicted improvement level of our model, then matched those results to subjective experiments. As a result, we have a methodology that can be used by display makers to measure and predict brightness as a function of color saturation in order to optimize luminance—notably for reducing power—in displays with spectrally pure primaries.
Publication Date: 2020-11-10
DOI: 10.5594/M001922
Link: https://doi.org/10.5594/M001922
Author(s): Dale StolitzkaSamsung Display America Lab, San Jose, CA
Jong-Ho ChongSamsung Display, Co., Ltd.
ChangHee LeeSamsung Display, Co., Ltd.
Jinoh KwagSamsung Display, Co., Ltd.
Keyword(s): CIECAM02, HDR, Helmholtz-Kohlrausch Effect, iCAM06, Perceptual Contrast Length (PCL)
Copyright: © 2020 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

CIE.159.2004 — CIE 159:2004, “A Colour Appearance Model for Colour Management Systems: CIECAM02.” EXTERNAL
Demers, C., “Peak Brightness of TVs – Max luminosity and HDR highlights” for RTINGS.com, https://www.rtings.com/tv/tests/picture-quality/peak-brightness. June 2016, accessed Jul 2, 2020. EXTERNAL
Shiga, T and Kitahara, S., “Power Reduction of OLED Displays by Tone Mapping Based on Helmholtz-Kohlrausch Effect,” IEICE Trans. Electron., E100-C (11), Nov 2017. EXTERNAL
https://www.topcon-techno.co.jp/en/products-series/sr-5000/, accessed July 2, 2020. EXTERNAL
Wood, M., “Lightness – The Helmholtz-Kohlrausch effect,” Out of the Wood, (Summer 2012), https://www.mikewoodconsulting.com/articles.htm, accessed July 2020. EXTERNAL
CLASP, “New Video Test Sequence for Televisions”, CLASP: Washington, D.C. (2016) https://clasp.ngo/updates/2016/new-video-test-sequence-for-televisions. EXTERNAL
Nayatani, Y., “Simple Estimation Methods for the Helmholtz-Kohlrausch Effect,” Color Research and Applications, 22 (6): 385-401, Dec. 1997. EXTERNAL
SEMI, D75-0118, “Test Method for Color Reproduction and Perceptual Contrast of Display,” Aug. 2017. EXTERNAL
Nayatani, Y. “A Colorimetric Explanation of the Helmholtz-Kohlrausch Effect,” Color Research and Applications, 23, (6): 374-378, Dec. 1998. EXTERNAL
https://www.nanosysinc.com/products, accessed July 2, 2002. EXTERNAL
Hunt, R.W.G., Measuring Colour, 2nd ed. Ellis Horwood: New York, 1991. EXTERNAL
op. cit., Wyszecki, G. and Stiles, W.S., (2000). EXTERNAL
Van Derlofske, et. al., “3M™ Quantum Dot Enhancement Film (QDEF),” 3M Company (2013) https://multimedia.3m.com/mws/media/985375O/3mtm-quantum-dot-enhancement-film-qdef-white-paper.pdf, accessed July 2, 2020. EXTERNAL
VESA DisplayHDR Certified Products, https://displayhdr.org/certified-products/, accessed July 2, 2020. EXTERNAL
Wyszecki, G. and Stiles, W.S., Color Science, 2nd ed., Wiley: New York, 2000. EXTERNAL
Kuang, J., Johnson, G.M. and Fairchild, M., “iCAM06: A refined image appearance model for HDR image rendering,” J. of Visual Communications and Image Representation, 18(5) 406-414. Sept. 2007. EXTERNAL
ITU-R BT.2020-2 [Active]
SMPTE ST 428-1:2006 [Superseded]
SMPTE ST 431-1:2006 [Active, Reaffirmed]

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Dale Stolitzka, Jong-Ho Chong, ChangHee Lee, and Jinoh Kwag; A Model for Very Wide Gamut HDR Displays that Accounts for the H-K Effect, SMPTE Meetings and Conferences ( November 2020); SMPTE, 2020. Available at https://doi.org/10.5594/M001922

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Dale Stolitzka, Jong-Ho Chong, ChangHee Lee, and Jinoh Kwag; A Model for Very Wide Gamut HDR Displays that Accounts for the H-K Effect, SMPTE Meetings and Conferences ( November 2020); SMPTE, 2020. Available at https://doi.org/10.5594/M001922

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<span class="citation">Dale Stolitzka, Jong-Ho Chong, ChangHee Lee, and Jinoh Kwag; <cite>A Model for Very Wide Gamut HDR Displays that Accounts for the H-K Effect</cite>, SMPTE Meetings and Conferences ( November 2020); SMPTE, 2020. Available at <a href="https://doi.org/10.5594/M001922" target="_blank" rel="noopener">https://doi.org/10.5594/M001922</a></span>

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Dale Stolitzka, Jong-Ho Chong, ChangHee Lee, and Jinoh Kwag; <cite id="bib-10-5594-m001922">A Model for Very Wide Gamut HDR Displays that Accounts for the H-K Effect</cite>, SMPTE Meetings and Conferences ( November 2020); SMPTE, 2020
<span class="doi">10.5594/M001922</span>
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