Sampling, splines and frames on compact manifolds

Abstract

Analysis on the unit sphere \(\mathbb {S}^{2}\) found many applications in seismology, weather prediction, astrophysics, signal analysis, crystallography, computer vision, computerized tomography, neuroscience, and statistics. In the last two decades, the importance of these and other applications triggered the development of various tools such as splines and wavelet bases suitable for the unit spheres \(\mathbb {S}^{2}\), \(\>\>\mathbb {S}^{3}\) and the rotation group \(SO(3)\). Present paper is a summary of some of results of the author and his collaborators on the Shannon-type sampling, generalized (average) variational splines and localized frames (wavelets) on compact Riemannian manifolds. The results are illustrated by applications to Radon-type transforms on \(\mathbb {S}^{d}\) and \(SO(3)\).