Abstract
An optical projection technique for controllable and quantifiable degradation of any two-dimensional test slide is described. The technique provides many of the features of electronic methods at low cost.
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We would like to thank Richard Gregory and Robert Williams for their discussion, Philip Clark for photographic assistance, and the M.R.C., from whom P. F. Heard received a research scholarship.
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Heard, P.F., Makepeace, A.P.W. Random-dot picture sampling by optical projection. Behavior Research Methods & Instrumentation 12, 45–47 (1980). https://doi.org/10.3758/BF03208323
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DOI: https://doi.org/10.3758/BF03208323