Title
Impulse noise filtering using robust pixel-wise S-estimate of variance
Abstract
A novel method for impulse noise suppression in images, based on the pixel-wise S-estimator, is introduced. The S-estimator is an alternative for the well-known robust estimate of variance MAD, which does not require a location estimate and hence is more appropriate for asymmetric distributions, frequently encountered in transient regions of the image. The proposed computationally efficient modification of a robust S-estimator of variance is successfully utilized in iterative scheme for impulse noise filtering. Another novelty is that the proposed iterative algorithm has automatic stopping criteria, also based on the pixel-wise S-estimator. Performances of the proposed filter are independent of the image content or noise concentration. The proposed filter outperforms all state-of-the-art filters included in a large comparison, both objectively (in terms of PSNR and MSSIM) and subjectively.
Year
DOI
Venue
2010
10.1155/2010/830702
EURASIP J. Adv. Sig. Proc.
Keywords
Field
DocType
impulse noise
Median filter,Noise measurement,Computer science,Salt-and-pepper noise,Impulse noise,Artificial intelligence,Computer vision,Iterative method,Filter (signal processing),Algorithm,Image noise,Speech recognition,Pixel
Journal
Volume
Issue
ISSN
2010,
1
1687-6180
Citations 
PageRank 
References 
4
0.48
28
Authors
2
Name
Order
Citations
PageRank
Vladimir S. Crnojevic118617.82
Nemanja I. Petrović280.94