Multicontext wavelet-based thresholding segmentation of brain tissues in magnetic resonance images

作者：Zhou Zhenyu; Ruan Zongcai

来源：Magnetic Resonance Imaging, 2007, 25(3): 381-385.

DOI：10.1016/j.mri.2006.09.001

• wavelets
• image segmentation
• magnetic resonance imaging
• brain imaging
• white matter
• gray matter
• cerebrospinal fluid

A novel segmentation method based on wavelet transform is presented for gray matter, white matter and cerebrospinal fluid in thin-sliced single-channel brain magnetic resonance (MR) scans. On the basis of the local image model, multicontext wavelet-based thresholding segmentation (MCWT) is proposed to classify 2D MR data into tissues automatically. In MCWT, the wavelet multiscale transform of local image gray histogram is done, and the gray threshold is gradually revealed from large-scale to small-scale coefficients. linage segmentation is independently performed in each local image to calculate the degree of membership of a pixel to each tissue class. Finally, a strategy is adopted to integrate the intersected outcomes from different local images. The result of the experiment indicates that MCWT outperforms other traditional segmentation methods in classifying brain MR images.

• 出版日期2007-4
• 单位东南大学