Production of an image model and inspection of a pixel represent

Details Production of an image model and inspection of a pixel represent Production of an image model and inspection of a pixel represent

1991-01-09

1993-10-19

Couso, Jose L.

Image analysis

Histogram processing

For setting a threshold

382 48, 382 52, G06K 938

Patent

active

052553310

ABSTRACT:
A method of inspecting a pixel for tolerable variation from a corresponding selected pixel in a master image comprises establishing a data word of which the bits each indicate whether or not all the master image pixels in the neighborhood of the selected pixel all have values (i.e. brightness values) within a respective range. A data word representing the value of the inspected pixel is compared simultaneously with the ranges of values associated with the bits of the data word, which provides gating for the comparisons.

REFERENCES:
patent: 4041456 (1977-08-01), Ott et al.
patent: 4131879 (1978-12-01), Ehrat
patent: 4196452 (1980-04-01), Warren et al.
patent: 4349846 (1982-09-01), Sekigawa
patent: 4554593 (1985-11-01), Fox et al.
patent: 4554594 (1985-11-01), Chardiello et al.
Japanese Reference No. JP-55-45948 PTO Translation pp. 1-17.

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