Accession Number : ADA255989


Title :   Effects of Spatial Luminance Nonuniformities on Visual-Task Performance and Subjective Uniformity.


Descriptive Note : Final rept.,


Corporate Author : HUMAN ENGINEERING LAB ABERDEEN PROVING GROUND MD


Personal Author(s) : Gallimore, J J ; Farley, W W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a255989.pdf


Report Date : Jul 1992


Pagination or Media Count : 14


Abstract : The objectives of the experiment described in the paper were the determination of the effects of nonuniformities on operator performance and perception, and the validation of current recommended standards. Subjects performed two tasks in the presence of nonuniformities: an objective visual search task and a subjective magnitude-estimation task for the determination of perceived uniformity. The results indicated that the nonuniformities did not appreciably affect search performance, and that current recommendations are appropriate, although the magnitude-estimation task results indicated that the subjects were sensitive to the nonuniformities. The subject impressions of perceived uniformity results follow the contrast threshold function of the visual system. display luminance nonuniformity, perceived uniformity, visual displays.


Descriptors :   *SPATIAL DISTRIBUTION , *VISUAL PERCEPTION , FUNCTIONS , CONTRAST , PERCEPTION , LUMINANCE , PAPER , DETERMINATION , VALIDATION , STANDARDS


Subject Categories : Anatomy and Physiology


Distribution Statement : APPROVED FOR PUBLIC RELEASE