Method and subsystem for plotting the perimeter of an object

Details Method and subsystem for plotting the perimeter of an object Method and subsystem for plotting the perimeter of an object

1983-11-15

1986-03-11

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

356394, 358107, 358213, 377 24, 382 22, H04N 718

Patent

active

045757518

ABSTRACT:
The perimeter of an object is detected using a CCD. When a pixel is dark a right detection turn is taken and when a pixel is light a left detection turn is taken. When a transition from light to dark or from dark to light occurs the address of the light pixel is recorded to identify the light pixel as a perimeter pixel.

REFERENCES:
patent: 3781574 (1973-12-01), White et al.
patent: 4276609 (1981-06-01), Patel
patent: 4351004 (1982-09-01), Choate et al.
patent: 4454541 (1984-06-01), Duschl
patent: 4454545 (1984-06-01), Duschl
patent: 4480264 (1984-10-01), Duschl

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