DocumentCode :
3215855
Title :
3-D heart segmentation on CT images using superellipsoid model fitting
Author :
Oghli, Mostafa Ghelich ; Fallahi, Alireza ; Pooyan, Mohammad
Author_Institution :
Students Res. Comm., Kermanshah Univ. of Med. Sci., Kermanshah, Iran
fYear :
2012
fDate :
15-17 May 2012
Firstpage :
1567
Lastpage :
1570
Abstract :
Model based segmentation is one of the best methods for segmentation of the heart in CT and MRI images. Because of basic characteristics of the heart shape, it can be represented by such models like ellipse and superellipse. Among model based methods elliptic and superelliptic methods are more computationally expensive. But when prior knowledge of the heart shape is available the parameter estimations become reliable. In this paper we propose a 3-D semi-automatic heart segmentation using transverse axis slices. The approach consists of fitting superellipse to each slice and making a 3-D superellipsoid model of the heart. We used an iterative method over a set of given data as partial data. Moreover partial data for obtaining prior knowledge of the heart shape are used that makes our method computationally less expensive. Results show that the addition of partial data increase robustness of a fitting. Also this method can segment hidden parts of heart in transverse axis CT images.
Keywords :
biomedical MRI; cardiology; computerised tomography; image segmentation; iterative methods; medical image processing; parameter estimation; 3D semiautomatic heart segmentation; 3D superellipsoid model; MRI imaging; elliptic methods; fitting superellipse; heart shape; iterative method; model based methods; model based segmentation; parameter estimations; superellipsoid model fitting; superelliptic methods; transverse axis CT imaging; transverse axis slices; Computational modeling; Fitting; Image segmentation; Mathematical model; Reliability engineering; Solid modeling; CT images; Deformable models; Levenberg method; Partial data; Superellipsoid;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Engineering (ICEE), 2012 20th Iranian Conference on
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-1149-6
Type :
conf
DOI :
10.1109/IranianCEE.2012.6292609
Filename :
6292609
Link To Document :
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