NDLI: On optimization of filter banks with denoising applications

Content Provider	IEEE Xplore Digital Library
Author	Akkarakaran, S. Vaidyanathan, P.P.
Copyright Year	1999
Description	Author affiliation: Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA (Akkarakaran, S.)
Abstract	The problem of optimization of subband coders for given input statistics has received considerable attention in recent literature. The goal in these works has been to maximize the coding gain, which is a compression performance measure under the standard quantizer noise models for high bit-rates. The optimal filter bank (FB) for this problem has been observed to be a principal component filter bank (PCFB) for the class of FBs over which the optimization is performed. The purpose of this paper is to point out a stronger connection between optimality of the FB and the principal component property, which appears to have been overlooked in the literature. We show that PCFBs are also optimal for a variety of other signal processing schemes such as noise suppression by using hard-thresholding or zeroth order Wiener filtering in the subbands.
Starting Page	512
Ending Page	515
File Size	437559
Page Count	4
File Format	PDF
ISBN	0780354710
DOI	10.1109/ISCAS.1999.778895
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel bank filters Noise reduction Signal processing Filter bank Wiener filter Additive white noise Statistics Performance gain Signal analysis Quantization
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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