Image Quality and Face Recognition on a Television Display.

摘要

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, MTFA sub SQ, was shown to correlate highly with both measures of observer performance. The utility of this metric for systems design is discussed.