Measurement of Luminance Reproduction Accuracy of Displays for Complex Imagery

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2022, No. 10, pp. 1–13
Abstract: Modern displays utilize complex light emission systems to allow for high dynamic range and wide color gamut image reproduction. This results in luminance and contrast distribution across the screen that is not only highly dependent on the image content but also difficult to accurately measure and predict. The perceptual effects of these shortcomings are partially masked in consumer displays by the spatio-temporal limitations of the human visual system. However, in the case of colorcritical applications such as color grading using professional displays, inaccurate reproduction of image luminance and contrast can drive creative choices that would not have been made otherwise. In this paper, we describe a measurement procedure and analysis aimed at subjectively and objectively determining the ability of a display to accurately reproduce image luminance. The procedure uses a high-resolution imaging light-measuring device to capture per-pixel luminance on a screen and compare it against the luminance distribution of the source image. The procedure includes steps for registering the image measured by the light-measuring device to the reference image, compensating for lens distortions and simulating the modulation transfer function of the lens. — The paper also contains example results collected for two displays along with an analysis of their performance. The test content used in the measurement contains a combination of synthetic imagery and camera-captured, color graded content. We have developed the procedure for color-critical applications to evaluate the performance of displays and determine luminance reproduction accuracy across complex scenes.
Publication Date: 2022-10-24
DOI: 10.5594/M001976
ISBN: Print: 978-1-61482-963-8
Link: https://doi.org/10.5594/M001976
Author(s): Robert WanatLG Electronics Zenith R&D
Alexander Carpenter
Michael D. SmithWavelet Consulting LLC
Sally HattoriThe Walt Disney Studios
Keyword(s): Display Measurement, Luminance Reproduction, Spatial Luminance, Metrology, Calibration, Display Accuracy
Copyright: © 2022 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

S. Safranek and R.G. Davis, “Sources of Error in HDRI for Luminance Measurement: A Review of the Literature,” LEUKOS, 17(2): 187-208, Mar. 2022. EXTERNAL
The European Broadcasting Union (EBU), “Tech 3320. User Requirements for Video Monitors in Television Production”, Sept. 2019, https://tech.ebu.ch/publications/tech3320 EXTERNAL
SID International Committee for Display Metrology (ICDM), “Information Display Measurements Standard version 1.1a", July 2021, https://www.sid.org/Standards/ICDM EXTERNAL
A.B. Watson, "A formula for the mean human optical modulation transfer function as a function of pupil size." Journal of Vision 13(6): 1-11, May 2013. Articles Published in Proceedings EXTERNAL
A. Choudhury et al., “Image Quality Evaluation for High Dynamic Range and Wide Color Gamut Applications Using Visual Spatial Processing of Color Differences,” Color Res Appl. 46: pp. 46– 64, Nov 2020. EXTERNAL
E.H.A. Langendijk and M. Hammer, “14.4: Contrast Requirements for OLEDs and LCDs Based on Human Eye Glare,” SID Symposium Digest of Technical Papers, 41, pp. 192-194 2010. Books EXTERNAL
Y. Le Grand, Optique physiologique, Revue D'optique: Paris, 1952. Standards EXTERNAL
ITU-R BT.2100-2 [Active]
R-REC-BT.2124 — International Telecommunication Union – Radiocommunication (ITU-R), Recommendation BT.2124, “Objective Metric for the Assessment of the Potential Visibility of Colour Difference in Television,” Jan. 2019. EXTERNAL
SMPTE ST 2084:2014 [Active, Stabilized]

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Robert Wanat, Alexander Carpenter, Michael D. Smith, and Sally Hattori; Measurement of Luminance Reproduction Accuracy of Displays for Complex Imagery, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8. Available at https://doi.org/10.5594/M001976

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Robert Wanat, Alexander Carpenter, Michael D. Smith, and Sally Hattori; Measurement of Luminance Reproduction Accuracy of Displays for Complex Imagery, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8. Available at https://doi.org/10.5594/M001976

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<span class="citation">Robert Wanat, Alexander Carpenter, Michael D. Smith, and Sally Hattori; <cite>Measurement of Luminance Reproduction Accuracy of Displays for Complex Imagery</cite>, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8. Available at <a href="https://doi.org/10.5594/M001976" target="_blank" rel="noopener">https://doi.org/10.5594/M001976</a></span>

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Robert Wanat, Alexander Carpenter, Michael D. Smith, and Sally Hattori; <cite id="bib-10-5594-m001976">Measurement of Luminance Reproduction Accuracy of Displays for Complex Imagery</cite>, SMPTE Meetings and Conferences ( October 2022); SMPTE, 2022, ISBN: 978-1-61482-963-8
<span class="doi">10.5594/M001976</span>
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