Subjective Impairment of Television Pictures—Considerations regarding the Summability of Impairment Units

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 81, No. 12, pp. 917–920
Abstract: The Impairment Unit (imp) proposed by the British Post Office is examined in the light of the statistical models, either normal or binomial, used to represent observer opinion of television picture quality. For a single impairment, the interesting result is obtained that, given a binomial distribution of the mean opinion score, the logarithm of the imp is very nearly normally distributed. The imp concept is extended to multivariate distribution models representing opinion in the presence of more than one impairment. For two coexisting impairment, the imp sum, as a measure of the overall quality, is compared to the bivariate imp as above and is found to be a useful, if rough, estimate of the latter.
Publication Date: 1972-12-01
DOI: 10.5594/J08181
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J08181
Author(s): C. A. SiocosCanadian Broadcasting Corp., 7925 Côte Saint-Luc Road, Montreal 267, Que., Canada
Copyright: © 1972 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Numerical Values for Subjective Picture Quality in Television [Active]
Subjective Effects of Differential Gain and Differential Phase Distortions in NTSC Color Television Pictures [Active]
1. Lewis N. W. Allnatt J. W. , “Subjective quality of television pictures with multiple impairments,” Electronics Letters , 1 : 187 – 188 , Sept. 1965 . EXTERNAL
4. Lewinsky D. A. : “A new objective for message circuit noise,” Bell System Tech. Jour. , XLIII : 719 – 740 , March 1964 . EXTERNAL
5. Prosser R. D. Allnatt J. W. Lewis N. W. , “Quality rating of impaired televsion pictures,” Proc. IEE , 111 : 491 – 502 , March 1964 . EXTERNAL
6. Natrella M. G. , Experimental Statistics, NBS Handbook 91 , Washington, D.C. , U.S. Printing Office , 1963 . EXTERNAL

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C. A. Siocos; Subjective Impairment of Television Pictures—Considerations regarding the Summability of Impairment Units, Journal of the SMPTE ( Volume: 81, Issue: 12, December 1972); SMPTE, 1972. Available at https://doi.org/10.5594/J08181

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C. A. Siocos; Subjective Impairment of Television Pictures—Considerations regarding the Summability of Impairment Units, Journal of the SMPTE ( Volume: 81, Issue: 12, December 1972); SMPTE, 1972. Available at https://doi.org/10.5594/J08181

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<span class="citation">C. A. Siocos; <cite>Subjective Impairment of Television Pictures—Considerations regarding the Summability of Impairment Units</cite>, Journal of the SMPTE ( Volume: 81, Issue: 12, December 1972); SMPTE, 1972. Available at <a href="https://doi.org/10.5594/J08181" target="_blank" rel="noopener">https://doi.org/10.5594/J08181</a></span>

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C. A. Siocos; <cite id="bib-10-5594-j08181">Subjective Impairment of Television Pictures—Considerations regarding the Summability of Impairment Units</cite>, Journal of the SMPTE ( Volume: 81, Issue: 12, December 1972); SMPTE, 1972
<span class="doi">10.5594/J08181</span>
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