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Channel order estimation for multichannel blind image recovery

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2 Author(s)
Harikumar, G. ; Motorola Inf. Syst. Group, Mansfield, MA, USA ; Bresler, Y.

Several algorithms have been proposed for multichannel blind deconvolution of images. Many of these algorithms are critically dependent on accurate estimates of the sizes of the unknown filters-wrong estimates can result in catastrophic failure. In this paper we present a residual-based technique for order estimation that is based on the generalized likelihood ratio test (GLRT). The performance of the algorithm is shown to be far superior to subspace rank-based methods typically used for the purpose. We conjecture that the algorithm fails only when the data is corrupted to an extent that makes any kind of reconstruction infeasible.

Published in:

Signals, Systems & Computers, 1998. Conference Record of the Thirty-Second Asilomar Conference on  (Volume:2 )

Date of Conference:

1-4 Nov. 1998

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