Method of curved surface abnormal holes vision measurement based on high precision turntable

Laipeng Lyu; Chao Bi; Jianguo Fang; Yong Zhu; Liping Wang

doi:10.1117/12.2199483

8 October 2015 Method of curved surface abnormal holes vision measurement based on high precision turntable

Laipeng Lyu, Chao Bi, Jianguo Fang, Yong Zhu, Liping Wang

Proceedings Volume 9675, AOPC 2015: Image Processing and Analysis; 96751I (2015) https://doi.org/10.1117/12.2199483
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

For solving the difficult problem that there is no effective way to measure abnormal holes located at blade erection loop of aero-engine case, an image measurement system based on high precision air-bearing turntable is established in this paper. The issue that monocular vision can’t measure curved surface has overcome by using high precision turntable to make sure high positioning accuracy of the surface abnormal holes and high-resolution microscope lens which is used to image local tiny features. Besides, an algorithm of determining the boundary points of a trailing edge on the contour of abnormal hole is proposed to achieve a rapid fitting and accuracy. After experiments and analysis, results show that the system can be used to measure local tiny features on curved surfaces validly and efficiently.

Citation Download Citation

Laipeng Lyu, Chao Bi, Jianguo Fang, Yong Zhu, and Liping Wang "Method of curved surface abnormal holes vision measurement based on high precision turntable", Proc. SPIE 9675, AOPC 2015: Image Processing and Analysis, 96751I (8 October 2015); https://doi.org/10.1117/12.2199483

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