图 书 馆
纤维束监督分类的作用Supervised Segmentation of Fiber Tracts |
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| 课程网址: | http://videolectures.net/simbad2011_olivetti_segmentation/ |
| 主讲教师: | Emanuele Olivetti |
| 开课单位: | 布鲁诺凯斯勒基金会 |
| 开课时间: | 2011-10-17 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | In this work we study the problem of supervised tract segmentation from tractography data, a vectorial representation of the brain connectivity extracted from diffusion magnetic resonance images. We report a case study based on a dataset where for each tractography of three subjects the segmentation of eight major anatomical tracts was manually operated by expert neuroanatomists. Domain specific distances that encodes the dissimilarity of tracts do not allow to define a positive semi-definite kernel function. We show that a dissimilarity representation based on such distances enables the successful design of a classifier. This approach provides a robust encoding which proves to be effective using a linear classifier. Our empirical analysis shows that we obtain better tract segmentation than previously proposed methods. |
| 关 键 词: | 纤维束成像; 监督管道; 磁共振图像; 线性分类器 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-06-08：cxin |
| 阅读次数: | 26 |