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Published in:
2012 | OriginalPaper | Chapter
The Data Registration of Hull Blocks Based on Levenberg-Marquardt Algorithm
Authors : Haipeng Zhang, Duanfeng Han
Published in: Recent Advances in Computer Science and Information Engineering
Publisher: Springer Berlin Heidelberg
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In order to achieve geometric errors of hull blocks, the registration between measuring data and model data is one of the prerequisites. Levenberg-Marquardt (LM) algorithm method was proposed with preliminary registration. The algorithm takes use of preliminary registration by principle of coordinate transformation in order to minimize errors between the transformed hull block measured data and model data. After preliminary registration, error function based on least square principle is established and the global optimal registration parameters are derived by the unconstrained optimization algorithm based on LM. The analysis results could predict the geometric errors of hull blocks construction accurately and provide an instructive basis for subsequent block modification and assembly.