Image analysis apparatus

Details Image analysis apparatus Image analysis apparatus

1974-04-05

1976-08-31

Griffin, Robert L.

Telegraphy

Systems

Simplex-reversing periodic

178 6, 178 75SE, 178DIG1, 178DIG36, H04N 718

Patent

active

039782808

ABSTRACT:
Image analysis apparatus has a cathode ray tube and an associated light pen. The light pen can be used to draw on the screen of the cathode ray tube a frame around a feature. A detector connected to receive the video signals only responds to features within that frame. The apparatus can be switched to another mode in which the cathode ray tube displays, to a higher magnification, a point indicated on the screen of the cathode ray tube using the light pen.

REFERENCES:
patent: 3637997 (1972-01-01), Petersen
patent: 3801741 (1974-04-01), Ablett

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