mirage

Nonlinear diffusion in Laplacian pyramid domain for ultrasonic speckle reduction.

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Nonlinear diffusion in Laplacian pyramid domain for ultrasonic speckle reduction.

Show full item record

Title: Nonlinear diffusion in Laplacian pyramid domain for ultrasonic speckle reduction.
Author: Zhang, Fan.; Yoo, Yang Mo.; Koh, Liang Mong.; Kim, Yong Min.
Copyright year: 2007
Abstract: A new speckle reduction method, i.e., Laplacian pyramid-based nonlinear diffusion (LPND), is proposed for medical ultrasound imaging. With this method, speckle is removed by nonlinear diffusion filtering of bandpass ultrasound images in Laplacian pyramid domain. For nonlinear diffusion in each pyramid layer, a gradient threshold is automatically determined by a variation of median absolute deviation (MAD) estimator. The performance of the proposed LPND method has been compared with that of other speckle reduction methods, including the recently proposed speckle reducing anisotropic diffusion (SRAD) and nonlinear coherent diffusion (NCD). In simulation and phantom studies, an average gain of 1.55 dB and 1.34 dB in contrast-to-noise ratio was obtained compared to SRAD and NCD, respectively. The visual comparison of despeckled in vivo ultrasound images from liver and carotid artery shows that the proposed LPND method could effectively preserve edges and detailed structures while thoroughly suppressing speckle. These preliminary results indicate that the proposed speckle reduction method could improve image quality and the visibility of small structures and fine details in medical ultrasound imaging.
Subject: DRNTU::Engineering::Electrical and electronic engineering::Electronic systems::Signal processing.
Type: Journal Article
Series/ Journal Title: IEEE transactions on medical imaging
School: School of Electrical and Electronic Engineering
Rights: © 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Version: Published version

Files in this item

Files Size Format View
Nonlinear Diffu ... onic Speckle Reduction.pdf 3.915Mb PDF View/Open
   

DOI Query

- Get published version (via Digital Object Identifier)
   

This item appears in the following Collection(s)

Show full item record

Statistics

Total views

All Items Views
Nonlinear diffusion in Laplacian pyramid domain for ultrasonic speckle reduction. 400

Total downloads

All Bitstreams Views
Nonlinear Diffusion in Laplacian Pyramid Domain for Ultrasonic Speckle Reduction.pdf 651

Top country downloads

Country Code Views
United States of America 161
China 132
India 87
Taiwan 42
Singapore 20

Top city downloads

city Views
Mountain View 90
Beijing 63
Singapore 19
Pondicherry 18
Dhaka 15

Downloads / month

  2014-02 2014-03 2014-04 total
Nonlinear Diffusion in Laplacian Pyramid Domain for Ultrasonic Speckle Reduction.pdf 0 0 10 10