124 citations · 249 across the 14 of their papers we have counts for
3 papers · 1 filter
Wavelet-Based Segmentation on the Sphere
Xiaohao Cai, Christopher G. R. Wallis, Jennifer Y. H. Chan +1
Segmentation, a useful/powerful technique in pattern recognition, is the process of identifying object outlines within images. There are a number of efficient algorithms for segmen…
Sparse image reconstruction on the sphere: analysis and synthesis
Christopher G. R. Wallis, Yves Wiaux, Jason D. McEwen
We develop techniques to solve ill-posed inverse problems on the sphere by sparse regularisation, exploiting sparsity in both axisymmetric and directional scale-discretised wavelet…
Optimal scan strategies for future CMB satellite experiments
Christopher G. R. Wallis, Michael L. Brown, Richard A. Battye +1
The B-mode polarisation power spectrum in the Cosmic Microwave Background (CMB) is about four orders of magnitude fainter than the CMB temperature power spectrum. Any instrumental…