Calibration of Location Coordinates in Chang”E-2 CCD Data

The CCD stereo camera of Chang”E-2 satellite produces the high spatial resolution images.However, the positioning precision is low.The coordinates of corresponding points in the adjacent orbits of 2C level CCD images exist considerable difference.Combining with the image registration technique and the characteristic of Chang”E-2 CCD images, a method of calibration the longitude and latitude coordinates is proposed in this paper.Firstly, feature points of reference image is extracted by Harris detector.Secondly, the overlapped region between reference image and target image is obtained by the normalized cross-correlation method.Next, in the overlapped region, the corresponding point pairs are established by area-based registration.Lastly, the coordinates of target image have been calibrated by means of the transformation matrix (it is computed by the corresponding pairs coordinates).The proposed method can decrease the relative positioning error, improve location accuracy and solve the contradiction (CCD image of high spatial resolution and the location coordinates of low positioning accuracy) to prepare the mosaic of lunar images.
Chang”E-2 CCD images coordinates calibration image registration
Li Zhi Ye Mengjie Cai Zhanchuan Tang Zesheng
Faculty of Information Technology,Macau University of Science and Technology,Macau,China Space Science Institute,Macau University of Science and Technology,Macau,China Faculty of Information Technology,Macau University of Science and Technology,Macau,China;Space Scien
国内会议
第十届中国计算机图形学大会暨第十八届全国计算机辅助设计与图形学会会议
武汉
英文
61-70
2014-10-17(万方平台首次上网日期,不代表论文的发表时间)