期刊
MEASUREMENT
卷 190, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2022.110789
关键词
Level-set function; Surface topography; Honing groove feature
This paper proposes an improved level-set-based algorithm for groove feature extraction and conducts experiments to validate its performance. The results show that the method is robust and improves both segmentation accuracy and computational speed.
Honing groove features of a cylinder liner surface contain helpful information on surface performance. Tradi-tional honing surface evaluation methods do not focus on groove features, which is significant to surface functions. Hence, a topographical feature segmentation algorithm and corresponding evaluation parameters are needed. This paper proposes an improved level-set-based segmentation algorithm for groove feature extraction. The proposed algorithm was tested on a real honing surface dataset compared to some state-of-art algorithms, including the classical height thresholding and watershed segmentation. The results show that the proposed method is robust against initial conditions and improves both segmentation accuracy and computational speed. Specifically, a 30% accuracy improvement over the best-tested level-set algorithm has been observed. Another case study on fold-mental characterization was conducted, which also validated the accuracy and speed per-formance of the proposed algorithm.
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