Design and Application of a new Multiscale Multidirectional Non-subsampled Filter Bank

Satish, M and Gupta, Sumana (2012) Design and Application of a new Multiscale Multidirectional Non-subsampled Filter Bank. In: 8TH INTERNATIONAL CONFERENCE ON SIGNAL IMAGE TECHNOLOGY & INTERNET BASED SYSTEMS (SITIS 2012), NOV 25-29, 2012 , Univ Bourgogne, Sorrento, ITALY , pp. 64-71.

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Abstract

We propose a new method for design of computationally efficient nonsubsampled multiscale multidirectional filter bank with perfect reconstruction (PR). This filter bank is composed of two nonsubsampled filter banks, for multiscale decomposition and for directional expansion. For multiscale decomposition, we transform the 1-D equivalent subband filters directly into 2-D equivalent subband filters. The computational cost is considerably reduced by avoiding the computation of 2-D convolutions. The multidirectional decomposition utilizes fan filters. A new method for design of 2-D zero phase FIR fan filter transformation function is developed. This method also aids the transformation of a 1-D filter bank to a 2-D multidirectional filter bank. The potential application of the proposed filter bank is illustrated by comparing the image denoising performance of the proposed filter bank with other design method that exist in available literature.

Item Type:	Conference Proceedings
Publisher:	IEEE
Additional Information:	Copyright for this article belongs to the IEEE, USA
Keywords:	Multiscale Filter Bank; Multidirectional Filter Bank;denoising IMAGE REPRESENTATION; CONTOURLET TRANSFORM
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	02 Apr 2013 11:21
Last Modified:	02 Apr 2013 11:21
URI:	http://eprints.iisc.ac.in/id/eprint/46256

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