This paper describes a technique which may be used to expand the utility of microcomputer-generated visual imagery for the study of visual performance by permitting the display of gray shades. This capability is not usually available in microcomputers, and is highly desirable in order to present visual stimuli with contrast variation.
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References
1.
BlackwellH. R.Contrast thresholds of the human eye. Journal of the Optical Society of America, 1946, 36, 624–642.
2.
SakittB.Configuration dependence of scotopic spatial summation. Journal of Physiology, 1971, 216, 513–529.
