Portland State University. Department of Psychology
Date of Award
Master of Science (M.S.) in Psychology
1 online resource (41 p.)
Electroluminescent display systems, Visual perception
A human performance experiment was conducted to investigate pixel parameter requirements for three types of flat-panel display images: an alphanumeric character, an oscilloscope waveform, and a real-world image. Subjects performed similarity judgments between an extremely high-quality image and an image composed of different levels of anti-aliasing and pixel width-plus-pixel separation (pitch). It was found that the effect of pitch had greater influence on perceived image quality for the alphanumeric character and oscilloscope waveform than for the real-world image. The results of this research provide empirical evidence showirg that the pixel pitch requirements for flat-panel systems that are used to display binary, high-contrast images (such as text and waveforms) will be more stringent than for low-contrast pictorial images. The three levels of grey-scale anti-aliasing investigated were found to improve image quality for only the binary, high-contrast images.
Weiman, Novia, "Effects of flat panel display parameters across three application areas upon similarity judgments" (1988). Dissertations and Theses. Paper 3947.