SVM for density estimation and application to medical image segmentation.
- Author:
Zhao ZHANG
1
;
Su ZHANG
;
Chen-xi ZHANG
;
Ya-zhu CHEN
Author Information
1. Biomedical Instrument Institute, Shanghai Jiao Tong University, Shanghai 200030, China. z_ball@sjtu.edu.cn
- Publication Type:Journal Article
- MeSH:
Humans;
Image Interpretation, Computer-Assisted;
methods;
Magnetic Resonance Imaging
- From:
Journal of Zhejiang University. Science. B
2006;7(5):365-372
- CountryChina
- Language:English
-
Abstract:
A method of medical image segmentation based on support vector machine (SVM) for density estimation is presented. We used this estimator to construct a prior model of the image intensity and curvature profile of the structure from training images. When segmenting a novel image similar to the training images, the technique of narrow level set method is used. The higher dimensional surface evolution metric is defined by the prior model instead of by energy minimization function. This method offers several advantages. First, SVM for density estimation is consistent and its solution is sparse. Second, compared to the traditional level set methods, this method incorporates shape information on the object to be segmented into the segmentation process. Segmentation results are demonstrated on synthetic images, MR images and ultrasonic images.
