Process for measuring the optical quality of a glass product

Details Process for measuring the optical quality of a glass product Process for measuring the optical quality of a glass product

1995-06-02

1997-12-02

Boudreau, Leo

Image analysis

Applications

Manufacturing or product inspection

348 92, 348130, 356239, 356392, G01N 2188

Patent

active

056944799

ABSTRACT:
For evaluating the optical quality of a glass product utilizing a projection technique, a camera and a computer, the image observed is compared with a reference image reconstructed by means of a convolution window which is displaced over the entire projected image. The illumination at the boundaries is reconstructed by an extrapolation by two-dimensional linear regression.

REFERENCES:
patent: 4647197 (1987-03-01), Kitaya et al.
patent: 4930889 (1990-06-01), Van Donselaar et al.
patent: 5363188 (1994-11-01), Didelot et al.

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