A Fast Aerial Image Matching Method Using Airborne LiDAR Point Cloud and POS Data

作者：Yongjun ZHANG,Xiaodong XIONG,Mengqiu WANG,Yihui LU

摘要：A novel tie point matching algorithm of aerial images with the assistance of airborne LiDAR point clouds and POS data is proposed Firstly,the conjugate point searching strategy used in traditional correlation coefficient matching is improved and a fast algorithm is presented.Secondly,an automatic camera boresight misalignment calibration method based on virtual ground control points is proposed,and then the searching range of image matching is adaptively determined and applied to the image matching of the entire surveying area.Test results verified that the fast correlation coefficient matching algorithm proposed in this paper can reduce approximately 25% of the matching time without the loss of matching accuracy.The camera boresight misalignment calibration method can effectively increase the accuracy of exterior orientation elements of images calculated from POS data,and thus can significantly improve the predicted position of conjugate point for tie point matching.Our proposed image matching algorithm can achieve superior matching accuracy with multi-scale,multi-view,and cross-flight aerial images.

發文機構：School of Remote Sensing and Information Engineering

關鍵詞：arialimageTIEpointMATCHINGFASTcorrelationMATCHINGCAMERAboresightMISALIGNMENTLIDAR

分類號： P[天文地球]