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Hardware-Oriented Algorithm for High-Speed Laser Centerline Extraction Based on Hessian Matrix

文献类型：期刊论文

作者Li, Zhikai1,2; Ma, Liping1,2; Long, Xianlei1,2; Chen, Yunze1,2; Deng, Haitao3; Yan, Fengxia3; Gu, Qingyi1,2
刊名IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
出版日期2021
卷号70页码:14
ISSN号0018-9456
关键词Hardware image processing Hessian matrix high-speed vision laser centerline extraction line-section 3-D reconstruction
DOI10.1109/TIM.2021.3081163
通讯作者Gu, Qingyi(qingyi.gu@ia.ac.cn)
英文摘要Centerline extraction is the basic and key procedure in line-structured laser 3-D scanners. In this article, we propose a hardware-oriented algorithm for fast and accurate extraction of a laser centerline based on the Hessian matrix. The algorithm is divided into three low-coupling modules that can be processed in parallel-coarse positioning, line width estimation, and precise positioning module. In the coarse positioning module, a window slider is used to traverse all image pixels in the raster-scan mode for collecting local image features, based on which the potential region of interest (ROI) containing laser lines is detected. In the line width estimation module, the second-order moment features in the detected ROI are calculated to estimate the linewidth according to the local rectangular similarity characteristics of the laser line. In the precise positioning module, the optimal Gaussian template estimated by the linewidth is convolved with the ROI to obtain the Hessian matrix. Based on the Hessian matrix, the normal direction of the laser line is obtained, and the second-order Taylor expansion is performed in that direction to determine the subpixel position of the center point. Finally, non-maximum suppression is used to remove noise points and obtain the most reliable single-pixel centerline. The proposed algorithm is evaluated using thousands of sample images with different materials, exposure times, and laser line shapes, and it presents high robustness for subpixel precision extraction. By implementing the proposed algorithm on a field-programmable gate array (FPGA), a high-speed, high-precision laser centerline extraction system is achieved, which operates at 1350 frames/s for a 1-million-pixel video stream.
WOS关键词CALIBRATION
资助项目Scientific Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20200045] ; National Natural Science Foundation of China[61673376] ; National Key R&D Program of China[2019YFB1311100] ; Suzhou Key Industrial Technology Innovation-Prospective Application Research[SYG201929]
WOS研究方向Engineering ; Instruments & Instrumentation
语种英语
出版者IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号WOS:000749885500008
资助机构Scientific Instrument Developing Project of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Key R&D Program of China ; Suzhou Key Industrial Technology Innovation-Prospective Application Research
源URL[http://ir.ia.ac.cn/handle/173211/47394]  
专题精密感知与控制研究中心_精密感知与控制
中国科学院自动化研究所
通讯作者Gu, Qingyi
作者单位1.Chinese Acad Sci, Inst Automat, Res Ctr Precis Sensing & Control, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Artificial Intelligence, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Suzhou Res Ctr, Inst Automat, Suzhou 215000, Peoples R China
推荐引用方式
GB/T 7714		 Li, Zhikai,Ma, Liping,Long, Xianlei,et al. Hardware-Oriented Algorithm for High-Speed Laser Centerline Extraction Based on Hessian Matrix[J]. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT,2021,70:14.
APA Li, Zhikai.,Ma, Liping.,Long, Xianlei.,Chen, Yunze.,Deng, Haitao.,...&Gu, Qingyi.(2021).Hardware-Oriented Algorithm for High-Speed Laser Centerline Extraction Based on Hessian Matrix.IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT,70,14.
MLA Li, Zhikai,et al."Hardware-Oriented Algorithm for High-Speed Laser Centerline Extraction Based on Hessian Matrix".IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 70(2021):14.

入库方式： OAI收割

来源：自动化研究所

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