NSSC OpenIR
Study of the depth accuracy and entropy characteristics of a ToF camera with coupled noise
Alternative TitleWOS:000534067900031;20200208001669
Fang, YuJie1; Wang, Xia; Sun, ZhiBin2; Zhang, Kai1; Su, BingHua1
Source PublicationOPTICS AND LASERS IN ENGINEERING
2020
Volume128Pages:106001
DOI10.1016/j.optlaseng.2020.106001
ISSN0143-8166
Language英语
KeywordDepth accuracy ToF camera Differential entropy MLP Evaluation INTERFERENCE RESOLUTION IMAGES VIDEO
AbstractBy illuminating targets with a modulated light signal, a time-of-flight (ToF) camera can calculate depth maps based on the phase shifts generated by the round-trip travel of the light from the targets back to the sensor. The accuracy of such depth imaging depends on the quality of the returned light. However, the calculation can be disturbed by various factors, including the external environment and the internal structure of the camera. Multiple coupled interferences can introduce noise into the depth data collected by a ToF camera in the spatial domain. It is difficult to express the relationship between the noise in depth maps and these mixed disturbances in a mathematical model. Based on the theory of differential entropy and a large amount of depth data from a ToF camera, this paper analyzes the characteristics of depth imaging entropy, proposes an evaluation method for depth image quality, and presents a multilayer perceptron model with information entropy (E-MLP) trained to optimize the accuracy of depth imaging. Experimental results show that this method can significantly improve the depth accuracy in the case of mixed noise.
Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7720
Collection中国科学院国家空间科学中心
Affiliation1.Beijing Inst Technol, Sch Opt & Photon, Key Lab Optoelect Imaging Technol & Syst, Minist Educ, Beijing 100081, Peoples R China
2.Beijing Inst Technol, Zhuhai 519000, Peoples R China
3.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Fang, YuJie,Wang, Xia,Sun, ZhiBin,et al. Study of the depth accuracy and entropy characteristics of a ToF camera with coupled noise[J]. OPTICS AND LASERS IN ENGINEERING,2020,128:106001.
APA Fang, YuJie,Wang, Xia,Sun, ZhiBin,Zhang, Kai,&Su, BingHua.(2020).Study of the depth accuracy and entropy characteristics of a ToF camera with coupled noise.OPTICS AND LASERS IN ENGINEERING,128,106001.
MLA Fang, YuJie,et al."Study of the depth accuracy and entropy characteristics of a ToF camera with coupled noise".OPTICS AND LASERS IN ENGINEERING 128(2020):106001.
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