NDLI: Despeckling of ultrasound images using directionally decimated wavelet packets with adaptive clustering

Content Provider	IET Digital Library
Author	Chinnathambi, Vimalraj Sankaralingam, Esakkirajan Thangaraj, Veerakumar Padma, Sreevidya
Abstract	Two-dimensional transforms are extensively used for speckle noise reduction (despeckling) in ultrasound images. This work proposes a double filter bank structure consisting of a discrete wavelet packet transform (DWPT) and directional filter bank (DFB) along with a fuzzy-based clustering technique to despeckle ultrasound images. Wavelet packet transform can efficiently reject noises based on grey scale relational thresholding and DFB can efficiently preserve edge information. In this study, instead of conventional thresholding methods, fuzzy-based clustering techniques are applied for noise rejection. The algorithm provides a consistent improvement over the competing state-of-the-art speckle reduction algorithms due to the improved ability to preserve geometric features while rejecting speckle noise adaptively. The authors claim is validated by applying a number of clinical images with performance indices such as peak signal to noise ratio, mean structural similarity, signal to mean square error, speckle signal to noise ratio, speckle suppression index and edge preservation index.
Starting Page	206
Ending Page	215
Page Count	10
ISSN	17519659
Volume Number	13
e-ISSN	17519667
Issue Number	Issue 1, Jan (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/13/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2018.5011
Journal	IET Image Processing
Publisher Date	2018-10-31
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Clustering Biology And Medical Computing Biomedical Ultrasonics Channel Bank Filter Clinical Image Computer Vision And Image Processing Technique Despeckling DFB Directional Filter Bank Directionally Decimated Wavelet Packets Discrete Wavelet Packet Discrete Wavelet Transform Double Filter Bank Structure Edge Preservation Index Filtering Method in Signal Processing Function Theory And Analysis Fuzzy-based Clustering Technique Grey Scale Relational Thresholding Image Denoising Image Enhancement Image Filtering Integral Transforms Medical Image Processing Noise Ratio Noise Rejection Patient Diagnostic Method And Instrumentation Pattern Clustering Sonic And Ultrasonic Radiation Speckle Speckle Noise Reduction Speckle Signal Speckle Suppression Index Two-dimensional Transforms Ultrasound Image
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

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