Defect detecting method and apparatus

Details Defect detecting method and apparatus Defect detecting method and apparatus

1982-07-23

1984-06-12

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

209526, 250223B, 356240, 356445, H04N 718

Patent

active

044545428

ABSTRACT:
In a defect detecting method and apparatus, the image of an object under inspection is formed, the signals of picture elements forming the image is stored, the picture elements signals are accumulated for each of the regions which form parts of the image, the results of the accumulations for regions proximate to each other are compared, and a defect is detected from the result of the comparison.

REFERENCES:
patent: 4213702 (1980-07-01), Bryant
patent: 4256957 (1981-03-01), Ford
patent: 4284353 (1981-08-01), Yoshida
patent: 4293219 (1981-10-01), Ducloux
patent: 4385233 (1983-05-01), Lovalenti
patent: 4414566 (1983-11-01), Peyton

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