Method of inspecting a broad article

Details Method of inspecting a broad article Method of inspecting a broad article

G - Physics

01

N

G01N 21/88 (2006.01) G01B 11/30 (2006.01) G01J 3/46 (2006.01) G01N 21/89 (2006.01)

Patent

CA 2504245

A method of inspecting a broad article by using a plurality of line sensor cameras, more specifically a method of combining image data from such plural sensor cameras is disclosed. The line sensor cameras are disposed relative to the inspection surface of the broad article such that the sensor cameras have their own inspection ranges and also share in common a range which is overlapped by parts of the inspection ranges of the sensor cameras. A laser beam is projected to the overlapped range so that a line marking appears across the center of the overlapped range. The image data from any two adjacent line sensor cameras are combined through calculation in such a way that portions of data of images grabbed by the two adjacent sensor cameras are excluded on the basis of the line marking so that the inspection ranges of the two adjacent cameras cover complementarily the entire inspection range.

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