NDLI: Wavelet domain statistical order filter using the tri-state median filter algorithm

Content Provider	IEEE Xplore Digital Library
Author	Jesus, M.V. Javier, G.F.F. Marco Antonio, A.M.
Copyright Year	2005
Description	Author affiliation: Higher Sch. of Mech. & Electr. Eng., Mexico Nat. Polytech. Inst., Mexico City, Mexico (Jesus, M.V.; Javier, G.F.F.; Marco Antonio, A.M.)
Abstract	This paper proposes a new statistical order filter in the wavelet domain that suppress the impulsive noise obtaining better results than the methods developed by other researchers (Cai et al., 2001; Chang et al., 2000). This filter takes the basis of three algorithms (Valdes, 2004) and joins them to get a powerful method for reducing the impulsive noise present in color images while preserving edge and important details information. At first, this filter employs a method known as redundancy of approaches (Valdes, 2004) to reduce the noise present in the image low frequencies, after the previous task, it applies a second method (Rahman, 2003) as much in low as in high frequencies to continue suppressing impulsive noise contained in the image, this method (Rahman, 2003) is able to detect a corrupted sample (first stage) and to differentiate if the sample corresponds to noise or edge information (second stage), in this case and for getting better results, the last part of this method is replaced by a tri-state median filter algorithm (Chen, 1999) that improves the performance of the original algorithm (Rahman, 2003). All mentioned above and the results obtained prove that this wavelet domain statistical order filter is an important tool that must be considered by anyone who wants to solve the impulsive noise suppression task.
Starting Page	32
Ending Page	35
File Size	128484
Page Count	4
File Format	PDF
ISBN	0780392302
DOI	10.1109/ICEEE.2005.1529566
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-09
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Noise figure Wavelet domain Wavelet Coefficients Low pass filters Information filters Wavelet analysis Information filtering Low-frequency noise IEEE catalog Colored noise Discrete Wavelet Transform Wavelet coefficients
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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