Shape recognition apparatus

Details Shape recognition apparatus Shape recognition apparatus

1987-07-16

1989-07-04

Tarcza, Thomas H.

Image analysis

Histogram processing

For setting a threshold

382 25, 382 48, G06K 946

Patent

active

048457647

ABSTRACT:
A shape recognition apparatus for detecting a boundary of an object using a video camera converts an image signal to a binary signal, and detects boundary points showing the boundary from the binary signal, Then, boundary angle and average of boundary angle difference are calculated based on the boundary points, and thereby corners of the boundary are recognized.

REFERENCES:
patent: 4490848 (1984-12-01), Beall et al.
patent: 4493105 (1985-01-01), Beall et al.
patent: 4703512 (1987-10-01), Saka et al.
patent: 4747153 (1988-05-01), Kouno et al.

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