Method and apparatus for inspecting the outer appearance of a sp

Details Method and apparatus for inspecting the outer appearance of a sp Method and apparatus for inspecting the outer appearance of a sp

1996-08-27

1997-12-30

McGraw, Vincent P.

Optics: measuring and testing

By inspection with agitation or rotation

G01N 2188

Patent

active

057036870

ABSTRACT:
An undesirable protrusion on a golf ball is automatically detected by means of an optical system. Light (5) is illuminated to a selected position (3) on the spherical surface of a golf ball (1a) in a tangential direction. The ball (1a) is rotated in line with the light illuminating direction. A line sensor camera (6) is operated to take a line image of the spherical surface in the vicinity of the selected position and along a line perpendicular to the light illuminating direction. A two-dimensional image is constructed from image data of the camera. An abnormal brightness change which appears in the two-dimensional image as a result of an undesirable protrusion (9a, 9b) on the spherical surface shutting out the light (5) is detected, thereby detecting the presence of the undesirable protrusion.

REFERENCES:
patent: 4398825 (1983-08-01), Lewis
patent: 5602646 (1997-02-01), Bernardin et al.

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