CAMERA ANGLE-OF-VIEW ADJUSTMENT METHOD FOR CRACK INSPECTION APPARATUS

PROBLEM TO BE SOLVED: To provide a camera angle-of-view adjustment method for a crack inspection apparatus in which adjustment of an angle of view may be safely performed, workability is improved and a working time is shortened. SOLUTION: A dummy wall surface of an angle-of-view adjustment stage S i...

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Bibliographic Details
Main Author MASUZOE KAZUHISA
Format Patent
LanguageEnglish
Published 02.07.2004
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a camera angle-of-view adjustment method for a crack inspection apparatus in which adjustment of an angle of view may be safely performed, workability is improved and a working time is shortened. SOLUTION: A dummy wall surface of an angle-of-view adjustment stage S is utilized to adjust angles of view of cameras 31A-31D disposed at predetermined image pickup positions. An internal wall surface 20 of a tunnel 21 and the dummy wall surface are disposed at different positions but their shapes are approximately equal. Respective cameras 31A to 31D are arranged in the imaging position of the dummy wall surface corresponding to the imaging position of the internal wall surface 21. The angle of view is adjusted to the dummy wall surface to substantially adjust the angle of view of the internal wall surface 21 by using the cameras 31A-31D. Therefore, the adjustment of the angle of view may be safely performed, further, workability is improved and the working time may be shortened. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20020355000