Display screen inspection method

Details Display screen inspection method Display screen inspection method

1997-06-24

1999-10-12

Boudreau, Leo H.

Image analysis

Applications

Manufacturing or product inspection

382149, 345904, 348 92, G06K 900

Patent

active

059664584

ABSTRACT:
A display screen inspection method according to the present invention takes a display screen of a display device as an inspection subject and makes decisions on defects of the display screen. The method includes performing a separation between display operating portions and display non-operating portions of the inspection subject present in a gray image from image data of individual pixels of the gray image obtained by picking up an image of the inspection subject, selectively extracting image data of only proper display operating portions and compressing the image data to be inspected for defects, and inspecting the selectively extracted image data for any defects.

REFERENCES:
patent: 5204617 (1993-04-01), Kumagai
patent: 5293178 (1994-03-01), Kobayashi
patent: 5504504 (1996-04-01), Markandey et al.
patent: 5686959 (1997-11-01), Hayashi et al.
patent: 5717780 (1998-02-01), Mitsumune et al.
patent: 5764209 (1998-06-01), Hawthorne et al.
patent: 5825196 (1998-10-01), Irie et al.

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