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A quick hough transform parameter search algorithm for flexible part inspection
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DOI：10.1016/S0278-6125(97)83054-3.png)
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摘要
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This paper presents the development of a Quick Hough Transform Parameter Search (QHTPS) algorithm to be implemented in a vision-based metrology system for in-process dimensional checking of nonpositioned parts. Using prior information about part shape and size, the QHTPS algorithm models the orientation of each straight edge as a function of the orientation of the principal axis of the part image. This approach reduces the amount of accumulator cells that need to be declared in the transform space to quicken the part boundary representation operation. Experimental results of length, angle, and radius measurements of nonpositioned parts are given.
Keyword:
metrology-dimensional
precision engineering
machine vision
flexible inspection system
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14.2
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