The Future’s So Bright, I Gotta Wear Shades: Test Patterns for HDR

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: SMPTE Mot. Imag. J
Volume: 126, No. 3, pp. 29–36
Abstract: High dynamic range (HDR) and wide color gamut (WCG) technology present challenges to the design of a test pattern for the visual verification of systems. The previous International Telecommunications Union (ITU-R) Recommendation BT.709 paradigm defined a “zero-to-one-hundred-percent” scale, and the entire system and any reasonable display could be expected to show the full range of code values. However, SMPTE ST 2084 defines an absolute correspondence from code values up to 10,000 nits (A nit is a unit used to measure brightness and is equivalent to a candela per square meter), and even professional monitors will clip at some lower brightness level unique to their particular design. Furthermore, the ITU-R BT.2020 color gamut “container” exceeds the gamut of any professional monitor, so colors that are outside of a monitor’s particular gamut capability will be modified by the monitor. This lack of dependable behavior of monitors at the extremes of color and brightness creates additional challenges for the design of visual test patterns.
Publication Date: 2017-04-01
DOI: 10.5594/JMI.2017.2660678
ISSN: Print: 1545-0279 | Electronic: 2160-2492
Link: https://doi.org/10.5594/JMI.2017.2660678
Author(s): R. Norman Hurst
Keyword(s): HDR, Nits, Test Patterns, Test & Measurement, Video Testing, Wide Color Gamut
Copyright: © 2017 SMPTE

Bibliographic Reference(s)

I can See Clearly Now: A New Test Pattern for the Digital Age [Active]
Robert Norman Hurst, “Method for generating test patterns for detecting and quantifying losses in video equipment,” U.S. Patent No. 9 083 943, 14 July 2015. EXTERNAL
ITU-R BT.709.6 [Active]
ITU-R BT.2020-2 [Active]
SMPTE RP 177 [Active, Stabilized]
SMPTE ST 303 [Active, Stabilized]
SMPTE ST 2084:2014 [Active, Stabilized]

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R. Norman Hurst; The Future’s So Bright, I Gotta Wear Shades: Test Patterns for HDR, SMPTE Motion Imaging Journal ( Volume: 126, Issue: 3, April 2017); SMPTE, 2017. Available at https://doi.org/10.5594/JMI.2017.2660678

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R. Norman Hurst; The Future’s So Bright, I Gotta Wear Shades: Test Patterns for HDR, SMPTE Motion Imaging Journal ( Volume: 126, Issue: 3, April 2017); SMPTE, 2017. Available at https://doi.org/10.5594/JMI.2017.2660678

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<span class="citation">R. Norman Hurst; <cite>The Future’s So Bright, I Gotta Wear Shades: Test Patterns for HDR</cite>, SMPTE Motion Imaging Journal ( Volume: 126, Issue: 3, April 2017); SMPTE, 2017. Available at <a href="https://doi.org/10.5594/JMI.2017.2660678" target="_blank" rel="noopener">https://doi.org/10.5594/JMI.2017.2660678</a></span>

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R. Norman Hurst; The Future’s So Bright, I Gotta Wear Shades: Test Patterns for HDR, SMPTE Motion Imaging Journal ( Volume: 126, Issue: 3, April 2017); SMPTE, 2017
doi: 10.5594/JMI.2017.2660678
url: https://doi.org/10.5594/JMI.2017.2660678

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<li>
R. Norman Hurst; <cite id="bib-10-5594-jmi-2017-2660678">The Future’s So Bright, I Gotta Wear Shades: Test Patterns for HDR</cite>, SMPTE Motion Imaging Journal ( Volume: 126, Issue: 3, April 2017); SMPTE, 2017
<span class="doi">10.5594/JMI.2017.2660678</span>
</li>