Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/90848
Title: Boundary detection in echocardiographic images by directional gradient vector flow
Authors: Krishnan, Shankar M.
Cheng, Jierong
Foo, Say Wei
Issue Date: 2004
Source: Cheng, J., Foo, S. W., & Shankar, M. K. (2004). Boundary detection in echocardiographic images by directional gradient vector flow. IEEE International Workshop on BioMedical Circuits & Systems 2004: Singapore: IEEE.
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.
URI: https://hdl.handle.net/10356/90848
http://hdl.handle.net/10220/5923
DOI: http://dx.doi.org/10.1109/BIOCAS.2004.1454122
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.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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