Subjects were asked to match faces presented singly on a television display with one of 35 faces presented on a photographic display. The probability of correct recognition and the time required to recognize the single face were related to the quality of the television image. Image quality was varied by changing the square-wave response of the television system and the video signal-to-noise voltage ratio. A derived unitary metric of image quality, the square-wave modulation transfer function area, MTFASQ, was shown to correlate highly with both measures of observer performance. The utility of this metric for systems design is discussed.
Get full access to this article
View all access options for this article.
References
1.
BibermanL. M., (Ed.) Perception of displayed information.New York: Plenum, 1973.
2.
BoroughH. C.FallisR. F.WarnockT. H.BrittJ. H.Quantitative determination of image quality. Seattle: Boeing Co., D2-114058-1, May, 1967.
3.
CharmanW. N.OlinA.Image quality criteria for aerial camera systems. Photographic Science and Engineering, 1965, 9, 385–397.
GrahamC. H., (Ed.) Vision and visual perception, New York: Wiley, 1965.
6.
KeeseeR. L.Detectability thresholds for line-scan displays. Paper presented at Target Acquisition Symposium, Orlando, Florida, November, 1972.
7.
RosellF. A.WillsonR. H.Recent psychophysical experiments and the display signal-to-noise ratio concept. In BibermanL. M. (Ed.) Perception of displayed-information.New York: Plenum, 1973.
8.
SnyderH. L.Detection and identification performance in air-to-ground visual search. Invited address, Optical Society of America, Hollywood, Florida, October, 1970.
9.
SnyderH. L.The quality of television images. Paper presented at the Human Factors Society Annual Meeting, Los Angeles, October, 1972.
