@inproceedings{e1bfd49b0b8c49e9a45654b8fa0205e9,
title = "Conjugate gradient algorithm for extrapolation of sampled bandlimited signals on the 2-sphere",
abstract = "In this paper, we consider the problem of signal extrapolation for discrete (i.e., sampled) signals on the sphere. We propose conjugate gradient based algorithm for estimating a signal on the sphere from limited or incomplete measurements in a spatial domain. We prove that the proposed algorithm is guaranteed to converge and show that it has faster convergence compared to the Papoulis algorithm. The results also show that the incomplete measurements distributed in different non-connected spatial regions yield better extrapolation results, compared to the connected region case.",
keywords = "bandlimited signals, signal extrapolation, spherical harmonics, unit sphere",
author = "Zubair Khalid and Kennedy, {Rodney A.} and Salman Durrani and Parastoo Sadeghi",
year = "2012",
doi = "10.1109/ICASSP.2012.6288751",
language = "English",
isbn = "9781467300469",
series = "ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings",
pages = "3825--3828",
booktitle = "2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings",
note = "2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 ; Conference date: 25-03-2012 Through 30-03-2012",
}