Image processing device for the real-time processing and recogni

Details Image processing device for the real-time processing and recogni Image processing device for the real-time processing and recogni

1986-01-17

1988-04-05

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

G06K 968

Patent

active

047364386

ABSTRACT:
An image processing device for two-dimensional raster images is described. The receiving means thereof are followed by a sub-sampling circuit (28) for increasing the pitch of the raster received in accordance with an adjustable scale. To the sub-sampling circuit there are connected a buffer (30, 32) and a correlation circuit (36, 38) for comparing a number of columns of pixels with a reference image. The comparison result is subjected to a logic operation. The device is suitable for modular use and may include a growth circuit for converting rasters portions onto one color or brightness when a predetermined minimum number of pixels therein contains the relevant color or brightness, respectively.

REFERENCES:
patent: 4200861 (1980-04-01), Hubach et al.
patent: 4521909 (1985-06-01), Wang
patent: 4651341 (1987-03-01), Nakashima et al.

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