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Practically, in the underdetermined model , where is a -group sparse matrix (i.e., it has no more than nonzero rows), both and could be totally perturbed. In this paper, based on restricted isometry property, for the greedy block coordinate descent algorithm, a sufficient condition of exact recovery is presented under the total perturbations, to guarantee...
A constrained Kalman beamforming (CKB) method in spherical harmonics domain is proposed to localize multiple sources captured by spherical arrays. It scans the Euclidean norm of the weights in three-dimensional space to estimate source directions. It can improve the accuracy of sound source localization when steering vector mismatch exits. Moreover, it has the advantage of rapid convergence and online...
Buruli ulcer (BU) disease is a devastating flesh-eating bacterial infection that each year affects thousands of people, but if detected early, it can be easily treated and cured. During the past several years, we have been developing an automated dermoscopy system for accurate analysis of skin lesions. In this paper, we describe our experience with BU detection in West Africa, and we focus on the...
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