Non-rigid registration under anisotropic deformations

Dyke, Roberto, Lai, Yukun ORCID: https://orcid.org/0000-0002-2094-5680, Rosin, Paul ORCID: https://orcid.org/0000-0002-4965-3884 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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Abstract

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
URI:	https://orca.cardiff.ac.uk/id/eprint/121234

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