Abstract
We conduct an asymptotic risk analysis of the nonlocal means image denoising algorithm for Horizon class images that are piecewise constant with a sharp edge discontinuity. We prove that the mean-square risk of nonlocal means is suboptimal and in fact is within a log factor of the mean square risk of wavelet thresholding.
Original language | English (US) |
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Title of host publication | 2011 49th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2011 |
Pages | 299-305 |
Number of pages | 7 |
DOIs | |
State | Published - Dec 1 2011 |
Event | 2011 49th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2011 - Monticello, IL, United States Duration: Sep 28 2011 → Sep 30 2011 |
Other
Other | 2011 49th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2011 |
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Country/Territory | United States |
City | Monticello, IL |
Period | 9/28/11 → 9/30/11 |
ASJC Scopus subject areas
- Computer Networks and Communications
- Control and Systems Engineering