@inproceedings{d9a9d6e0298f4de98928a1ee98b6b4dc,
title = "Sub-aperture image stitching of cylindrical mirror surface defects based on dark-field imaging",
abstract = "High-precision cylindrical lens optics are widely used in high-precision equipment, such as high-power laser resonators and long-distance line interferometers. In most instances, this lens required to possess extremely low surface roughness and surface defects. Using dark-field microscopy to detect the surface defects of the cylindrical mirror is simpler than the interferometric, and the cost is lower. In the experiment, we designed a set of image acquisition devices based on the characteristics of the cylindrical mirrors, and used this device to obtain overlapping sub-aperture images of the cylindrical mirrors. According to the overlapping area to solve the relative position relationship of two adjacent sub-apertures, an image stitching algorithm based on defect location is proposed, which realizes the stitching of multiple sub-apertures. The experimental system was used to scan a plano-convex cylindrical mirror with a size of 22mm×22mm and a radius of curvature of 41.34mm. Splicing the obtained sub-aperture images of surface defects. Experiments show that the stitching algorithm has high matching accuracy and strong robustness.",
keywords = "Cylindrical mirror, Defect detection, Sub-aperture stitching",
author = "Zhang Nansheng and Wang Shanshan and Xu Bowen and Zhu Qiudong and Hao Qun",
note = "Publisher Copyright: {\textcopyright} 2020 SPIE. All rights reserved.; 2020 Applied Optics and Photonics China: Optics Ultra Precision Manufacturing and Testing, AOPC 2020 ; Conference date: 29-06-2020 Through 30-06-2020",
year = "2020",
doi = "10.1117/12.2579835",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Lingbao Kong and Dawei Zhang and Xichun Luo",
booktitle = "AOPC 2020",
address = "United States",
}