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Block-to-Point Fine Registration in Terrestrial Laser Scanning
AbstractFine registration of point clouds plays an important role in data analysis in Terrestrial Laser Scanning (TLS). This work proposes a block-to-point fine registration approach to correct the errors of point clouds from TLS and of geodetic networks observed using total stations. Based on a reference coordinate system, the block-to-point estimation is performed to obtain representative points. Then, fine registration with a six-parameter transformation is performed with the help of an Iterative Closest Point (ICP) method. For comparisons, fine registration with a seven-parameter transformation is introduced by applying a Singular Value Decomposition (SVD) algorithm. The proposed method not only corrects the registration errors between a geodetic network and the scans, but also considers the errors among the scans. The proposed method was tested on real TLS data of a dam surface, and the results showed that distance discrepancies of estimated representative points between scans were reduced by approximately 60%.
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Wang, J. Block-to-Point Fine Registration in Terrestrial Laser Scanning. Remote Sens. 2013, 5, 6921-6937.View more citation formats
Wang J. Block-to-Point Fine Registration in Terrestrial Laser Scanning. Remote Sensing. 2013; 5(12):6921-6937.Chicago/Turabian Style
Wang, Jin. 2013. "Block-to-Point Fine Registration in Terrestrial Laser Scanning." Remote Sens. 5, no. 12: 6921-6937.
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