mirage

Boundary detection in echocardiographic images by directional gradient vector flow

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

Boundary detection in echocardiographic images by directional gradient vector flow

Show full item record

Title: Boundary detection in echocardiographic images by directional gradient vector flow
Author: Cheng, Jierong; Foo, Say Wei; Krishnan, Shankar M.
Copyright year: 2004
Abstract: Snakes, or active contour models, have been widely used in image segmentation. In this paper, a new type of dynamic external force for snakes named directional gradient vector flow (DGVF) is proposed for the detection of left ventricular boundary from echocardiographic images. The new method is able to discern between positive and negative step edges by incorporating directional gradient information. It makes use of the gradients in both x and y directions and deals with the external force field for the two directions separately. The DGVF field is utilized dynamically in snake deformation, according to the orientation of snake in each iteration. Experimental results demonstrate that the DGVF snake performs better boundary detection than gradient vector flow (GVF)snake in noisy echocardiographic images.
Type: Conference Paper
Conference name: IEEE International Workshop on BioMedical Circuits & Systems (2004 : Singapore)
School: School of Electrical and Electronic Engineering
Rights: IEEE International Workshop on BioMedical Circuits & Systems © 2004 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.
Version: Accepted version

Files in this item

Files Size Format View Description
C89-1016-BioCas2004CJ.pdf 453.9Kb PDF View/Open Accepted
   

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
Boundary detection in echocardiographic images by directional gradient vector flow 402

Total downloads

All Bitstreams Views
C89-1016-BioCas2004CJ.pdf 168

Top country downloads

Country Code Views
United States of America 59
China 47
Singapore 25
India 8
France 4

Top city downloads

city Views
Mountain View 48
Singapore 25
Beijing 22
Hyderabad 5
Madras 3