Technical Reprint: An Improved Law of Contrast Gradient for High Definition Television

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Volume: 103, No. 1, pp. 18–25
Abstract: A new law of contrast gradient is proposed for high definition television (HDTV) to replace the present “gamma” law, approximating to logarithmic at high picture brightness and linear at low brightness. The resulting video signal better approximates the subjective picture intensity and has up to 3 dB better resistance to spurious transmission artifacts, quantisation distortion and noise.
Publication Date: 1994-01-01
DOI: 10.5594/J09715
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J09715
Author(s): A. N. Firee ThieleAudio Radio Television, 10 Wycombe Street, Epping NSW 2121, Australia
Copyright: © 1994 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Logarithmic A/D Converters Used in Video Signal-Processing Systems [Active]
The Use of Logarithmic and Density Units for Pixels [Active]
The Equalization of Channel Noise Visibility in Television [Active]
HDTV Colorimetry and Gamma considering the Visibility of Noise and Quantization Errors [Active]
1. Green Book, CCIR, NNth. Plenary Assembly, Dusseldorf, 1990 (Green Book), Vol. XI/I - Recommendation No. 709, “Basic Parameter Values for the HDTV Standard for the Studio and for International Programme Exchange, Section 1: Opto-Electronic Conversion”. [Equations specified: EXTERNAL
2. Kretz F. , “Subjectively Optimal Quantization of Pictures” , Trans. IEEE , Vol. Comm-23 , November 1975 , pp. 1288 – 92 . EXTERNAL

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A. N. Firee Thiele; Technical Reprint: An Improved Law of Contrast Gradient for High Definition Television, SMPTE Journal ( Volume: 103, Issue: 1, January 1994); SMPTE, 1994. Available at https://doi.org/10.5594/J09715

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A. N. Firee Thiele; Technical Reprint: An Improved Law of Contrast Gradient for High Definition Television, SMPTE Journal ( Volume: 103, Issue: 1, January 1994); SMPTE, 1994. Available at https://doi.org/10.5594/J09715

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<span class="citation">A. N. Firee Thiele; <cite>Technical Reprint: An Improved Law of Contrast Gradient for High Definition Television</cite>, SMPTE Journal ( Volume: 103, Issue: 1, January 1994); SMPTE, 1994. Available at <a href="https://doi.org/10.5594/J09715" target="_blank" rel="noopener">https://doi.org/10.5594/J09715</a></span>

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A. N. Firee Thiele; Technical Reprint: An Improved Law of Contrast Gradient for High Definition Television, SMPTE Journal ( Volume: 103, Issue: 1, January 1994); SMPTE, 1994
doi: 10.5594/J09715
url: https://doi.org/10.5594/J09715

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<li>
A. N. Firee Thiele; <cite id="bib-10-5594-j09715">Technical Reprint: An Improved Law of Contrast Gradient for High Definition Television</cite>, SMPTE Journal ( Volume: 103, Issue: 1, January 1994); SMPTE, 1994
<span class="doi">10.5594/J09715</span>
</li>