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- Title
An iterative method for impulse noise removal.
- Authors
Xuesha Wu; Yun Ji
- Abstract
Based on the conjugate gradient method, we propose a modified iterative method (MCG) for impulse noise removal based on the famous two-phase scheme. The noise candidates are firstly identified by the adaptive median filter, and then the MCG method recovers these noise candidates by minimizing an edge-preserving regularization function. A nice property of the MCG method is that the global convergence can be established without assuming that the objective function satisfies strong convexity under the Armijo-type line search. Numerical experiments show that the MCG method is effective to remove the impulse noise.
- Subjects
BURST noise; CONJUGATE gradient methods; ADAPTIVE filters
- Publication
ScienceAsia, 2019, Vol 45, Issue 1, p92
- ISSN
1513-1874
- Publication type
Article
- DOI
10.2306/scienceasia1513-1874.2019.45.092