Image analysis – Histogram processing – For setting a threshold
Patent
1993-08-23
1994-09-27
Mancuso, Joseph
Image analysis
Histogram processing
For setting a threshold
359362, 282 8, G06K 920
Patent
active
053513169
ABSTRACT:
The present invention provides an image processing apparatus capable of forming a sharp image of a detection mark formed in a plane. The image processing apparatus comprises a camera unit (1) comprising a lens system (12) and a photodetecting device (13) inclined at a predetermined angle to the optical axis (L') of the lens system. The camera unit (1) is disposed with the optical axis (L') of the lens system (12) inclined at a predetermined angle to a perpendicular line (L) to the plane including the detection mark so that the difference in length between respective sections of light paths between diametrically opposite portions of the detection mark and the lens system is canceled by the difference in length between respective sections of the same light paths between the lens system and the photodetecting device.
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Mancuso Joseph
Ushio Co. Ltd.
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