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Active contours with weighted external forces for medical image segmentation
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Khadidos, Alaa, Sanchez Silva, Victor and Li, Chang-Tsun (2014) Active contours with weighted external forces for medical image segmentation. In: 18th Annual Conference in Medical Image Understanding and Analysis (MIUA2014), UK, London, 9-11 Jul 2014
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Official URL: http://www.city.ac.uk/medical-image-understanding-...
Abstract
Parametric active contours have been widely used for image segmentation. However, high noise levels and weak edges are the most acute issues that hinder their performance, particularly in medical images. In order to overcome these issues, we propose an external force that weights the gradient vector flow (GVF) field and balloon forces according to local image features. We also propose a mechanism to automatically terminate the contour's deformation. % process. %Our approach improves performance over noisy images and weak edges and allows snake's initialization using a limited number of manually selected points.
Evaluation results on real MRI and CT slices show that the proposed approach attains higher segmentation accuracy than snakes using traditional external forces, while allowing initialization using a limited number of selected points.
| Item Type: | Conference Item (Paper) | ||||
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| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software | ||||
| Divisions: | Faculty of Science > Computer Science | ||||
| Library of Congress Subject Headings (LCSH): | Image processing -- Digital techniques, Diagnostic imaging | ||||
| Official Date: | 2014 | ||||
| Dates: |
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| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Embodied As: | 1 | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 18th Annual Conference in Medical Image Understanding and Analysis (MIUA2014) | ||||
| Type of Event: | Conference | ||||
| Location of Event: | UK, London | ||||
| Date(s) of Event: | 9-11 Jul 2014 |
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