Proposed New RGB Gamut Display with True Color Saturation and Value Scales

Metadata

Publisher: SMPTE — White Plains, NY
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2009, No. 10, pp. 1–27
Abstract: In the days of composite signals, the Vector display was used for precise video synchronization and timing due to the sensitivity of the color sub-carrier phase and resulting Hue to genlock and timing jitter. With component distribution and production, the Hue is not so sensitive to timing errors and other methods are used for relative component timing assessment. However, the Vector display remains a popular analysis tool for assessing the artistic color characteristics such as Saturation and sometimes the signal range or gamut of a video signal. However, the Vector display does not allow the determination of the actual color Saturation or color Value (vividness) as is often believed nor does it provide a useful indication of a valid RGB signal gamut. In fact, there is no commonly available real-time Waveform or Vector type XY display that directly indicates the color Saturation or color Value of the signal along with conformance to valid RGB signal limits. There is a need then for a new display tool that clearly shows the artistic metrics of color Saturation and color Value or Lightness combined with RGB gamut limits allowing a colorist to adjust live video signals into a valid signal gamut range such that the desired image quality is maintained throughout distribution. Similarly, there is a need to determine the impact on the artistic color quality of any gamma/matrix conversion or signal limiting during distribution due to various format conversions and legalizer processing. Therefore, this paper proposes and describes the application of a new real-time display technology in the format of a simple, 2-dimensional, triangular color space bounded by the so called “valid” color gamut RGB signal limits.
Publication Date: 2009-10-01
DOI: 10.5594/M001343
Link: https://doi.org/10.5594/M001343
Author(s): Dan Baker
Copyright: © 2009 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Waidson M. , “HDTV Measurements and Monitoring,” SMPTE Journal , pp 71 – 79 , February/March 2002 . EXTERNAL
2. Baker D. Matney E. , “Determining Valid Component Analog Video Signals with a 3-D Vector Representation” , SMPTE Journal , May 1986 . EXTERNAL
3. U.S. Patent 5,307,087, issued April 26, 1994, “Three-dimensional RGB component vector display”. EXTERNAL
4. U.S. Patent 7,071,965, issued July 4, 2006, “Artistic color gamut display”. EXTERNAL

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Dan Baker; Proposed New RGB Gamut Display with True Color Saturation and Value Scales, SMPTE Meetings and Conferences ( October 2009); SMPTE, 2009. Available at https://doi.org/10.5594/M001343

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Dan Baker; Proposed New RGB Gamut Display with True Color Saturation and Value Scales, SMPTE Meetings and Conferences ( October 2009); SMPTE, 2009. Available at https://doi.org/10.5594/M001343

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<span class="citation">Dan Baker; <cite>Proposed New RGB Gamut Display with True Color Saturation and Value Scales</cite>, SMPTE Meetings and Conferences ( October 2009); SMPTE, 2009. Available at <a href="https://doi.org/10.5594/M001343" target="_blank" rel="noopener">https://doi.org/10.5594/M001343</a></span>

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Dan Baker; Proposed New RGB Gamut Display with True Color Saturation and Value Scales, SMPTE Meetings and Conferences ( October 2009); SMPTE, 2009
doi: 10.5594/M001343
url: https://doi.org/10.5594/M001343

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Dan Baker; <cite id="bib-10-5594-m001343">Proposed New RGB Gamut Display with True Color Saturation and Value Scales</cite>, SMPTE Meetings and Conferences ( October 2009); SMPTE, 2009
<span class="doi">10.5594/M001343</span>
</li>