Orientation Measurement for Objects with Planar Surface Based on Monocular Microscopic Vision

doi:10.1007/s11633-019-1202-y

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	Orientation Measurement for Objects with Planar Surface Based on Monocular Microscopic Vision
	Ying Li1,2 ; Xi-Long Liu1,2 ; De Xu1,2 ; Da-Peng Zhang1,2
发表期刊	International Journal of Automation and Computing
ISSN	1476-8186
	2020
卷号	17 期号:2 页码:247-256
摘要	Orientation measurement of objects is vital in micro assembly. In this paper, we present a novel method based on monocular microscopic vision for 3-D orientation measurement of objects with planar surfaces. The proposed methods aim to measure the orientation of the object, which does not require calibrating the intrinsic parameters of microscopic camera. In our methods, the orientation of the object is firstly measured with analytical computation based on feature points. The results of the analytical computation are coarse because the information about feature points is not fully used. In order to improve the precision, the orientation measurement is converted into an optimization process base on the relationship between deviations in image space and in Cartesian space under microscopic vision. The results of the analytical computation are used as the initial values of the optimization process. The optimized variables are the three rotational angles of the object and the pixel equivalent coefficient. The objective of the optimization process is to minimize the coordinates differences of the feature points on the object. The precision of the orientation measurement is boosted effectively. Experimental and comparative results validate the effectiveness of the proposed methods.
关键词	Microscopic vision micro assembly orientation measurement optimization analytical computation.
DOI	10.1007/s11633-019-1202-y
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/42300
专题	学术期刊_Machine Intelligence Research
作者单位	1.Research Center of Precision Sensing and Control, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China 2.School of Computer and Control Engineering, University of Chinses Academy of Sciences, Beijing 101408, China
第一作者单位	精密感知与控制研究中心
推荐引用方式 GB/T 7714	Ying Li,Xi-Long Liu,De Xu,et al. Orientation Measurement for Objects with Planar Surface Based on Monocular Microscopic Vision[J]. International Journal of Automation and Computing,2020,17(2):247-256.
APA	Ying Li,Xi-Long Liu,De Xu,&Da-Peng Zhang.(2020).Orientation Measurement for Objects with Planar Surface Based on Monocular Microscopic Vision.International Journal of Automation and Computing,17(2),247-256.
MLA	Ying Li,et al."Orientation Measurement for Objects with Planar Surface Based on Monocular Microscopic Vision".International Journal of Automation and Computing 17.2(2020):247-256.

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