A novel approach to obtain optimal exposure for 3D shape reconstruction of high dynamic range objects

doi:10.1088/1361-6501/abfad1

CORC > 自动化研究所 > 中国科学院自动化研究所 > 综合信息系统研究中心 > 工业智能技术与系统

	A novel approach to obtain optimal exposure for 3D shape reconstruction of high dynamic range objects
	Wu,Ke 1,2; Tan,Jie 1,2; Liu,Chengbao 2
刊名	Measurement Science and Technology
	2021-06-07
卷号	32 期号:9
关键词	structured light fringe projection 3D reconstruction auto-exposure
ISSN号	0957-0233
DOI	10.1088/1361-6501/abfad1
通讯作者	Tan,Jie() ; Liu,Chengbao()
英文摘要	Abstract The approach to choose the exposure sequence substantially affects the performance of the multiexposure structured light method when reconstructing the 3D shape of high dynamic range (HDR) targets. Previous researchers have conducted numerous works regarding how to select exposure time automatically, but most of them lack the consideration of the time efficiency of the 3D measurement when selecting the exposure time. In this paper, a novel approach to obtain optimal exposure for HDR targets is proposed. We developed a concept, namely, exposure style, to help us find the optimal exposure sequence. The area-weighted method is proposed as a guide to find the preliminary exposure sequence with the demanded exposure style. By uniform sampling, the preliminary exposure sequence is sampled into several alternate sequences with different lengths. By utilizing the exposure fusion method, the fused images generated by the captured images, which is under the exposures of these alternate sequences, are used to reconstruct the 3D shape of the HDR target. Then, the running time of 3D measurement and the number of generated 3D cloud points are recorded. By evaluating these two indicators comprehensively, the time efficiency of the selected exposure sequence is well-considered, and the sequence with the highest score is selected as the final optimal exposure sequence. Three HDR targets with different grayscale distributions are chosen to testify to the practicability of our method. The auto-HDR method and Zhang’s method are introduced for comparison. The experimental results show that the optimal exposure sequence selected by our auto-exposure strategy performs better than other methods and the 3D shape of HDR targets can be reconstructed completely and accurately.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0957-0233-32-9-ABFAD1
内容类型	期刊论文
源URL	[http://ir.ia.ac.cn/handle/173211/45082]
专题	综合信息系统研究中心_工业智能技术与系统
通讯作者	Tan,Jie; Liu,Chengbao
作者单位	1.University of Chinese Academy of Sciences and the Institute of Automation, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China 2.Institute of Automation, Chinese Academy of Sciences, Beijing 100080, People’s Republic of China
推荐引用方式 GB/T 7714	Wu,Ke,Tan,Jie,Liu,Chengbao. A novel approach to obtain optimal exposure for 3D shape reconstruction of high dynamic range objects[J]. Measurement Science and Technology,2021,32(9).
APA	Wu,Ke,Tan,Jie,&Liu,Chengbao.(2021).A novel approach to obtain optimal exposure for 3D shape reconstruction of high dynamic range objects.Measurement Science and Technology,32(9).
MLA	Wu,Ke,et al."A novel approach to obtain optimal exposure for 3D shape reconstruction of high dynamic range objects".Measurement Science and Technology 32.9(2021).