Abstract
An inexpensive device to digitize existing pictorial material in conjunction with a digital computer is described. Slides (35-mm) are used as source material, and the slide is scanned to produce a two-level output (i.e., dot present or dot absent). The system has spatial resolution of approximately 1 mm and a complete scan (30 times 19 points) is completed in about 20 sec. Although we are using the system to produce only two level outputs, there is no reason a gray scale could not be constructed.
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Specialized communications techniques for the radio amateur. Newington, Conn: American Radio Relay League, 1975.
Reference
Fink, D. G., &McKenzie, A. A.Electronics engineers handbook. New York: McGraw-Hill, 1975.
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Brown, B., Dewey, M.E. & Day, A.P. An objective automated method for digitizing pictorial material for computer manipulation. Behavior Research Methods & Instrumentation 8, 378–381 (1976). https://doi.org/10.3758/BF03201797
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DOI: https://doi.org/10.3758/BF03201797