17 March 1983 Real-Time Photoelectron Event-Detecting Video System
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We describe a system for localization of photoelectron events utilizing an intensified Plumbicon camera and a Grinnell video digitizer. The Grinnell digitizer, arithmetic unit and memory are used to produce a real-time video difference between current pixel value and previous pixel value thereby suppressing multiple detection of the same event. A master clock provides synchronization with the camera in operation at 60 Hz in 240 lines/field, repeat field mode. Our event-localization scheme provides double-buffered line-address and event-amplitude for up to 32 events along a 512 pixel video line. A software algorithm allows localization of multiple detections of the same event, and provides a unique address interpolated with 1/2 line resolution by the host minicomputer in a 480 x 512 format.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. H. Macklin, E. K. Hege, P. A. Strittmatter, "Real-Time Photoelectron Event-Detecting Video System", Proc. SPIE 0359, Applications of Digital Image Processing IV, (17 March 1983); doi: 10.1117/12.965957; https://doi.org/10.1117/12.965957

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