Title:
【発明の名称】球状物の外観検査方法及びその検査装置
Document Type and Number:
Japanese Patent JP2904069
Kind Code:
B2
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.
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Inventors:
KUMAGAI HIROKI
FUKAZAWA FUMIO
FUKAZAWA FUMIO
Application Number:
JP24248395A
Publication Date:
June 14, 1999
Filing Date:
August 28, 1995
Export Citation:
Assignee:
BURIJISUTON SUHOOTSU KK
International Classes:
A63B45/00; A63B47/00; G01B11/24; G01B11/30; G01N21/88; (IPC1-7): G01B11/24; A63B45/00; A63B47/00; G01B11/30; G01N21/88
Domestic Patent References:
| JP5099360A | ||||
| JP5172549A | ||||
| JP961364A | ||||
| JP961363A | ||||
| JP58219441A | ||||
| JP4106751U |
Attorney, Agent or Firm:
Takashi Kojima