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Automatic Medical Image Segmentation Using Gradient and Intensity Combined Level Set Method

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2 Author(s)
Liu, S. ; Dept. of Comput. Sci. & Eng., Oklahoma Univ., Rochester, MI ; Jia Li

This paper presents a new level set based solution for automatic medical image segmentation. Study shows that level set methods using image intensity or gradient information alone can not generate satisfying segmentation on some complex organic structures, such as lung bronchia or nodules. We investigate the intensity distribution of these organic structures, and propose a calibrating mechanism to automatically weight image intensity and gradient information in the level set speed function. The new method can tolerate estimation error in intensity distribution and detect object boundaries whose gradient is low. The experimental results show that the proposed method gives stable and accurate segmentation results on public lung image data

Published in:

Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE

Date of Conference:

Aug. 30 2006-Sept. 3 2006