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

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
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
Link: https://doi.org/10.5594/J08181
Author(s): C. A. Siocos

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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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<li>
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>
</li>