Scientific Results – CNR – Istituto Nazionale di Ottica

On the degradation of images on computer generated displays

Year: 1986

Authors: Ronchi L., Arecchi F.T.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy
Department of Physics, University of Firenze, 50125 Firenze, Italy

Abstract: Several studies have benn devoted to the optimization of the characters generated on a computer display, as observed under the best focus conditions. We show that useful information can be gathered also under degradation by defocusing. In particular, the deterioration can be gathered also under degradation by defocusing. in particular, the deterioration of sharpness and the fluctuation in apparent shape are here quantified and comparaded. The latter effect is tentatively interpreted in terms of coming into play of apparent edges with a relatively short lifeline and various possible orientations. The corrisponding line detectors are thought to be activated when the ends of the segments present in the pattern become sufficiently close to each other. This may be accomplished bu properly decreasing the adapting luminance.

Journal/Review: PROCEEDINGS OF SPIE

Volume: 701 Pages from: 68 to: 75

KeyWords: vision; computer display;