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mra脑血管图像局部otsu分割研究 local otsu segmentation of mra cerebrovascular image
张汴卡,相艳,易三莉,等.MRA 脑血管图像局部Otsu 分割研究[J].计算机科学与探索,2013 ,7(11):1026- 1032.
ISSN 1673-9418 CODEN JKYTA8
E-mail: fcst@vip. 163.com
Journal of Frontiers of Computer Science and Technology
1673-9418/2013/07( 11)- 1026-07
Tel: +86- 10
doi: 10.3778/j.issn. 1673-9418.1305017
MRA 脑血管图像局部Otsu 分割研究
张汴卡,相 艳,易三莉,马 磊,邢正伟,贺建峰+
昆明理工大学 信息工程与自动化学院,昆明 650500
Local Otsu Segmentation of MRA Cerebrovascular Image
ZHANG Bianka, XIANG Yan, YI Sanli, MA Lei, XING Zhengwei, HE Jianfeng+
School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming
650500, China
+ Corresponding author: E-mail: jfenghe@
ZHANG Bianka, XIANG Yan, YI Sanli, et al. Local Otsu segmentation of MRA cerebrovascular image. Journal
of Frontiers of Computer Science and Technology, 2013, 7(11) :1026-1032.
Abstract: Magnetic resonance angiography (MRA) is the primary choice for vascular imaging in clinic. The precision
of vessel segmentation is the key of angiography 3D visualization, diagnosis, treatment and evaluation of vascular
disease. By studying the characteristics of the cerebral vascular anatomical structure and MRA images, this paper pro-
poses a cerebrovascular segmentation method based on local Otsu. At first, the original image is preprocessed with
anisotropic diffusion filtering. Then, the optimal size of the sub-image is determined by calculating the change rate
of the image internal standard deviation between two images of different sub-block sizes. The image is divided into
some sub-images of this optimal size. Next, all the sub-images are segmented using the Otsu algorithm and merged
to the final segmentation r
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