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Abstract: Second
selection method is presented for extracting contour dominant points of
industrial CT image, which is simple and efficient. The method comprises
rough extraction and accurate extraction. First discrete circular
curvatures of contour points are calculated. Bad points are removed by
rough extraction, meanwhile, points which aren’t correlated with contour
feature are also removed. Then in the process of accurate extraction,
contour dominant points are extracted by levels of detail. Experimental
results show that contour dominant points can express contour’s shape
and redundant data are removed.
Key words: Industrial CT image Dominant points
Discrete curvature Levels of detail analysis
CLC No: TP391
航空基金资助项目(04I53069). Received 20051102, received in revised form 20060310
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