Television – Special applications – Object or scene measurement
Patent
1993-07-12
1995-04-04
Britton, Howard W.
Television
Special applications
Object or scene measurement
348345, 348357, H04N 718
Patent
active
054041635
ABSTRACT:
An image of the surface of a measuring object is picked up by a video camera while the distance to the measuring object is changed, and the in-focus state of the video camera is detected from the fact that the contrast, which is defined by the sum of the n-th (n: integer greater than 1) power of differences in brightness between adjoining pixels in the image, has reached its maximum. Further, the position of the surface of the measuring object is measured according to the position of the video camera in the in-focus state.
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Britton Howard W.
Mitutoyo Corporation
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