中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
Angular Calibration of Visible and Infrared Binocular All-Sky-View Cameras Using Sun Positions

文献类型：期刊论文

作者Xie, Wanyi1,2; Wang, Yiren1,2; Xia, Yingwei2; Gao, Zhenyu2; Liu, Dong2
刊名REMOTE SENSING
出版日期2021-07-01
卷号13
关键词angular calibration sun positions visible and infrared binocular all-sky-view cameras reprojection back projection binocular clouds image registration
DOI10.3390/rs13132455
通讯作者Liu, Dong(dliu@aiofm.cas.cn)
英文摘要Visible and infrared binocular all-sky-view cameras can provide continuous and complementary ground-based cloud observations. Accurate angular calibration for every pixel is an essential premise to further cloud analysis and georeferencing. However, most current calibration methods mainly rely on calibration plates, which still remains difficult for simultaneously calibrating visible and infrared binocular cameras, especially with different imaging resolutions. Thus, in this study, we present a simple and convenient angular calibration method for wide field-of-view visible and infrared binocular cameras. Without any extra instruments, the proposed method only utilizes the relation between the angular information of direct sun lights and the projected sun pixel coordinates to compute the geometric imaging parameters of the two cameras. According to the obtained parameters, the pixel-view-angle for the visible and infrared all-sky images is efficiently computed via back projection. Meanwhile, the projected pixel coordinates for the incident lights at any angle can also be computed via reprojection. Experimental results show the effectiveness and accuracy of the proposed angular calibration through the error estimation of reprojection and back projection. As a novel application, we successfully achieve visible and infrared binocular image registration at the pixel level after finishing angular calibration, which not only verifies the accuracy of calibration results, but also contributes to further cloud parameter analysis under these two different imaging features. The registration results, to our knowledge, also provide a reference for the current blank in visible and infrared binocular cloud image registration.
WOS关键词IMAGING-SYSTEM ; CLOUD ; RADIANCE ; MODEL
资助项目Key Collaborative Research Program of the Alliance of International Science Organizations[ANSO-CR-KP-2020-09] ; International Partnership Program of Chinese Academy of Sciences[116134KYSB20180114] ; Key research and development program of Anhui province of China[S202104b11020058] ; CASHIPS Director's Fund[YZJJ2020QN34]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:000670989200001
出版者MDPI
资助机构Key Collaborative Research Program of the Alliance of International Science Organizations ; International Partnership Program of Chinese Academy of Sciences ; Key research and development program of Anhui province of China ; CASHIPS Director's Fund
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/123541]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Dong
作者单位1.Univ Sci & Technol China, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Xie, Wanyi,Wang, Yiren,Xia, Yingwei,et al. Angular Calibration of Visible and Infrared Binocular All-Sky-View Cameras Using Sun Positions[J]. REMOTE SENSING,2021,13.
APA Xie, Wanyi,Wang, Yiren,Xia, Yingwei,Gao, Zhenyu,&Liu, Dong.(2021).Angular Calibration of Visible and Infrared Binocular All-Sky-View Cameras Using Sun Positions.REMOTE SENSING,13.
MLA Xie, Wanyi,et al."Angular Calibration of Visible and Infrared Binocular All-Sky-View Cameras Using Sun Positions".REMOTE SENSING 13(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。