A Laplace equation approach for shape comparison

Eric Pichon; Delphine Nain; Marc Niethammer

doi:10.1117/12.651135

10 March 2006 A Laplace equation approach for shape comparison

Eric Pichon, Delphine Nain, Marc Niethammer

Proceedings Volume 6141, Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display; 614119 (2006) https://doi.org/10.1117/12.651135
Event: Medical Imaging, 2006, San Diego, California, United States

Abstract

In this paper we propose a principled approach for shape comparison. Given two surfaces, one to one correspondences are determined using the Laplace equation. The distance between corresponding points is then used to define both global and local dissimilarity statistics between the surfaces. This technique provides a powerful method to compare shapes both locally and globally for the purpose of segmentation, registration or shape analysis. For improved accuracy, we propose a Boundary Element Method. Our approach is applicable to datasets of any dimension and offers subpixel resolution. We illustrate the usefulness of the technique for validation of segmentation, by defining global dissimilarity statistics and visualizing errors locally on color-coded surfaces. We also show how our technique can be applied to multiple shapes comparison.

Citation Download Citation

Eric Pichon, Delphine Nain, and Marc Niethammer "A Laplace equation approach for shape comparison", Proc. SPIE 6141, Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display, 614119 (10 March 2006); https://doi.org/10.1117/12.651135

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