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Non-rigid registration under anisotropic deformations

Dyke, Roberto, Lai, Yukun ORCID:, Rosin, Paul ORCID: and L., Tam 2019. Non-rigid registration under anisotropic deformations. Computer Aided Geometric Design 71 , pp. 142-156. 10.1016/j.cagd.2019.04.014

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Non-rigid registration of deformed 3D shapes is a challenging and fundamental task in geometric processing, which aims to non-rigidly deform a source shape into alignment with a target shape. Current state-of-the-art methods assume deformations to be near-isometric. This assumption does not reflect real-world conditions, for example in large-scale deformation, where moderate anisotropic deformations (e.g., stretches) are common. In this paper we propose two significant changes to a typical registration pipeline to address such challenging deformations. First, we introduce a method to estimate anisotropic non-isometric deformations and incorporate this into an iterative non-rigid registration pipeline. Second, we compute additional correspondences in non-isometrically deforming regions using reliable correspondences as landmarks and prune inconsistent correspondences. We compare the performance of our proposed algorithm to several state-of-the-art methods using existing benchmarks. Experimental results show that our method outperforms existing methods.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Publisher: Elsevier
ISSN: 0167-8396
Funders: EPSRC
Date of First Compliant Deposit: 27 March 2019
Date of Acceptance: 21 March 2019
Last Modified: 06 May 2023 14:31

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