Density estimation on the rotation group using diffusive wavelets

Nicolas Le Bihan; Julien Flamant; Jonathan H. Manton

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arXiv · 1512.06023

Density estimation on the rotation group using diffusive wavelets

Nicolas Le Bihan·Julien Flamant·Jonathan H. Manton

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Abstract

This paper considers the problem of estimating probability density functions on the rotation group $SO(3)$. Two distinct approaches are proposed, one based on characteristic functions and the other on wavelets using the heat kernel. Expressions are derived for their Mean Integrated Squared Errors. The performance of the estimators is studied numerically and compared with the performance of an existing technique using the De La Vallée Poussin kernel estimator. The heat-kernel wavelet approach appears to offer the best convergence, with faster convergence to the optimal bound and guaranteed positivity of the estimated probability density function.

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Nicolas Le Bihan, Julien Flamant, Jonathan H. Manton. 2015-12-18. Density estimation on the rotation group using diffusive wavelets. https://arxiv.org/abs/1512.06023

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