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| 距下关节CT序列图像分割及信息提取研究 | |
| 引用本文： | 戴虹,吕东辉,杨云峰.距下关节CT序列图像分割及信息提取研究[J].上海理工大学学报,2007,29(2):165-170. |
| 作者姓名： | 戴虹 吕东辉 杨云峰 |
| 作者单位： | 1. 上海第二工业大学,电子与电气工程学院,上海,201209 2. 上海大学,通信与信息工程学院,上海,200072 3. 同济大学,附属同济医院,上海,200065 |
| 摘 要： | 提出一种基于图像的距下关节信息提取方法.采用最大类间方差法与交互式数学形态学方法相结合的手段从活体后足CT序列图像中分割出距骨和跟骨,以移动立方体法重建距下关节复合体的表面并以动画方式显示距骨和跟骨的结构信息,提出力矩主轴法计算距骨和跟骨相对于参考系的旋转方向及它们之间的夹角.与其他方法相比较和仿真模型论证的结果表明,基于图像的距下关节信息提取方法具有较高的准确性和精度. |
| 关 键 词： | 距下关节 图像分割 力矩主轴 三维可视化 |
| 文章编号： | 1007-6735（2007）02-0165-06 |
| 修稿时间： | 2006-06-28 |
Research on subtalar joint segmentation and information extraction based on CT sequence of images |
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| DAI Hong,L.Research on subtalar joint segmentation and information extraction based on CT sequence of images[J].Journal of University of Shanghai For Science and Technology,2007,29(2):165-170. | |
| Authors: | DAI Hong L |
| Institution: | 1. School of Electronic and Electrical Engineering, Shanghai Second Polytechnic University, Shanghai 201209, China ; 2. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China ; 3. Tongji Hospital Affiliated, Tongji University, Shanghai 200065, China |
| Abstract: | A subtalar joint information extraction method based on images is presented.Talus and calcaneus were segmented from the images by using maximum between-class variance thresholding method combined with interactive morphological method.Subtalar joint complex was reconstructed by marching cubes surface reconstruction method and structures of talus and calcaneus were shown by their animations.A method of subtalar joint information extraction,i.e.principal axes method,was presented to figure out the rotational directions of talus and calcaneus and the angles between them.The results of comparison with another algorithm and verification by simulative model show that the method has high veracity and precision. |
| Keywords: | subtalar joint image segmentation principal axes method 3D visualization |
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