Title:
OBJECT VISUAL INSPECTION METHOD AND OBJECT VISUAL INSPECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2002/023171
Kind Code:
A1
Abstract:
A visual inspection apparatus for inspecting the surface of an object (W) which is not uniformly flat as a whole comprises a CCD television camera (45) for picking up the image of a specified extent including the surface to be inspected, and processors (46, 47) for inspecting the surface based on the brightness information at a plurality of dots equally divided in the image pickup extent. The processors (46, 47) preset a plurality of inspection lines on the image of the surface connecting the points where the difference in brightness, is a little determines the brightness information sequentially at the plurality of dots along the inspection lines, divides the brightness information into a plurality of sets for dot groups including a predetermined number of continuous dots, and inspects the surface along the inspection line based on the brightness information at the dots in each dot group.
Inventors:
HONDA TAKAYOSHI (JP)
HAMAMURA SATORU (JP)
YAMABE HARUO (JP)
KURODA KEIICHI (JP)
HAMAMURA SATORU (JP)
YAMABE HARUO (JP)
KURODA KEIICHI (JP)
Application Number:
PCT/JP2000/006245
Publication Date:
March 21, 2002
Filing Date:
September 13, 2000
Export Citation:
Assignee:
FUJISAWA PHARMACEUTICAL CO (JP)
HONDA TAKAYOSHI (JP)
HAMAMURA SATORU (JP)
YAMABE HARUO (JP)
KURODA KEIICHI (JP)
HONDA TAKAYOSHI (JP)
HAMAMURA SATORU (JP)
YAMABE HARUO (JP)
KURODA KEIICHI (JP)
International Classes:
G01N21/956; G06T1/00; G06T7/00; (IPC1-7): G01N21/88; G06T1/00
Foreign References:
| JPH0743314A | 1995-02-14 | |||
| JPS6224133A | 1987-02-02 | |||
| JPH01219656A | 1989-09-01 | |||
| JP2000266685A | 2000-09-29 |
Attorney, Agent or Firm:
Kishimoto, Einosuke (3rd floor 13-18 Nishishinsaibashi 1-chom, Chuo-ku Osaka-shi Osaka, JP)
Download PDF: