Image analysis – Histogram processing – For setting a threshold
Patent
1992-10-28
1994-09-27
Mancuso, Joseph
Image analysis
Histogram processing
For setting a threshold
382 62, 378 58, 356237, G06K 900, G01B 1506, G01N 2100
Patent
active
053513070
ABSTRACT:
The present invention relates to a process for the acquisition and processing of screen images or radiographs and to an apparatus making it possible to inspect or control mechanical parts. The process consists of obtaining at least two screen images of the part to be inspected, converting said images into digital video images coded on several grey levels, correcting each image with respect to itself and then with respect to a reference image and finally binarizing the corrected images in order to superimpose them, so as to determine the image points which correspond and thus detect defects. Application to the control and inspection of mechanical parts.
REFERENCES:
patent: 4477926 (1984-10-01), Linger et al.
patent: 4644585 (1987-02-01), Crimmins et al.
patent: 4920572 (1990-04-01), Sugita et al.
patent: 4937878 (1990-06-01), Lo et al.
patent: 4975972 (1990-12-01), Bose et al.
patent: 5129009 (1992-07-01), Lebeau
patent: 5179419 (1993-01-01), Palmquist et al.
IBM Technical Disclosure Bulletin, vol. 30, No. 4, Sep. 1987, pp. 1647-1649, "Multiple-Image Vision Inspection Process".
Fox David
Mancuso Joseph
Societe Nationale d'Etude et de Construction de Moteurs d'Aviati
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