Binocular three-dimensional measurement system using a Dammann grating

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 信息光学与光电技术实验室

	Binocular three-dimensional measurement system using a Dammann grating
	Liu, Kun ; Zhou, Changhe ; Wei, Shengbin ; Wang, Shaoqing ; Li, Shubin ; Li, Yanyang ; Wang, Jin ; Lu, Yancong
	2014
会议名称	conference on holography, diffractive optics, and applications vi
通讯作者	liu, k (reprint author), univ chinese acad sci, shanghai inst opt & fine mech, lab informat opt & optoelect tech, pob 800-211, shanghai 201800, peoples r china.
英文摘要	in this paper, we develop a binocular three-dimensional measurement system using a dammann grating. a laser diode and a dammann grating are employed to generate a regular and square laser spot array. dammann array illuminator is placed between two cameras and narrowband-pass filters are embedded in the project lens to eliminate the interference of background light. during the measurement, a series of laser spot arrays are projected toward the target object and captured by two cameras simultaneously. similar to stereo vision of human eyes, stereo matching will be performed to search the homologous spot which is a pair of image points resulting from the same object point. at first, the sub-pixel coordinates of the laser spots are extracted from the stereo images. then stereo matching is easily performed based on a fact that laser spots with the same diffraction order are homologous ones. because the system has been calibrated before measurement, single frame three-dimensional point cloud can be obtained using the disparity of homologous points by triangulation methods. finally, three-dimensional point clouds belong to different frame which represent different view of the object will be registered to build up an integral three-dimensional object using icp algorithm. on one hand, this setup is small enough to meet the portable outdoor applications. on the other hand, measurement accuracy of this system is better than 0.3 mm which can meet the measurement accuracy requirements in most situations.
收录类别	CPCI
会议录	holography, diffractive optics, and applications vi
会议录出版者	spie-int soc optical engineering
语种	英语
内容类型	会议论文
源URL	[http://ir.siom.ac.cn/handle/181231/17224]
专题	上海光学精密机械研究所_信息光学与光电技术实验室
作者单位	1.[Liu, Kun 2.Zhou, Changhe 3.Wei, Shengbin 4.Wang, Shaoqing 5.Li, Shubin 6.Li, Yanyang 7.Wang, Jin 8.Lu, Yancong] Univ Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Lab Informat Opt & Optoelect Tech, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Liu, Kun,Zhou, Changhe,Wei, Shengbin,et al. Binocular three-dimensional measurement system using a Dammann grating[C]. 见:conference on holography, diffractive optics, and applications vi.