Line laser stripe center extraction method based on channel separation

Sheng Lin; Yunyong Cheng; Yiran Tian; Wenguang Ye; Hao Dou

doi:10.1117/12.2651114

14 October 2022 Line laser stripe center extraction method based on channel separation

Sheng Lin, Yunyong Cheng, Yiran Tian, Wenguang Ye, Hao Dou

Proceedings Volume 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022); 1234320 (2022) https://doi.org/10.1117/12.2651114
Event: 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 2022, Qingdao, China

Abstract

Extracting the stripe center during the measurement process can significantly improve the measurement accuracy, and the optical stripe center extraction algorithm is an important factor determining the accuracy of the optical stripe contour location and extraction speed. For the traditional optical stripe center extraction method, because the ambient light conditions will affect the stripe center extraction under certain circumstances, the stripe center extraction often cannot accurately obtain the centerline, and to a certain extent, the extraction time of each algorithm is increased. In this paper, a line laser stripe center extraction method based on channel separation is proposed. The measured area is separated from the background area by the image segmentation algorithm, the Hessian matrix is obtained for each part of the measured area, and its normal direction is determined to obtain the sub-pixel stripe center, which can effectively avoid the problems of high light and certain brightness of the object, improve stripe center extraction speed and reduce stripe center noise.

Citation Download Citation

Sheng Lin, Yunyong Cheng, Yiran Tian, Wenguang Ye, and Hao Dou "Line laser stripe center extraction method based on channel separation", Proc. SPIE 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 1234320 (14 October 2022); https://doi.org/10.1117/12.2651114

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