Laplacian ICP for Progressive Registration of 3D Human Head Meshes

• URL: http://arxiv.org/abs/2302.02194v1
• Date: Sat, 4 Feb 2023 16:39:38 GMT
• Title: Laplacian ICP for Progressive Registration of 3D Human Head Meshes
• Authors: Nick Pears, Hang Dai, Will Smith and Hao Sun
• Abstract summary: We present a progressive 3D registration framework that is a highly-efficient variant of classical non-rigid Iterative Closest Points (N-ICP) Since it uses the Laplace-Beltrami operator for deformation regularisation, we view the overall process as Laplacian ICP (L-ICP)
• Score: 18.31701623205813
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a progressive 3D registration framework that is a highly-efficient variant of classical non-rigid Iterative Closest Points (N-ICP). Since it uses the Laplace-Beltrami operator for deformation regularisation, we view the overall process as Laplacian ICP (L-ICP). This exploits a `small deformation per iteration' assumption and is progressively coarse-to-fine, employing an increasingly flexible deformation model, an increasing number of correspondence sets, and increasingly sophisticated correspondence estimation. Correspondence matching is only permitted within predefined vertex subsets derived from domain-specific feature extractors. Additionally, we present a new benchmark and a pair of evaluation metrics for 3D non-rigid registration, based on annotation transfer. We use this to evaluate our framework on a publicly-available dataset of 3D human head scans (Headspace). The method is robust and only requires a small fraction of the computation time compared to the most popular classical approach, yet has comparable registration performance.

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