| 引用本文: | 宋红,张春萌,黄小川,李佳佳.腹部CT图像序列中的肝脏分割[J].哈尔滨工业大学学报,2013,45(9):82.DOI:10.11918/j.issn.0367-6234.2013.09.015 |
| SONG Hong,ZHANG Chunmeng,HUANG Xiaochuan,LI Jiajia.Liver segmentation on abdominal CT images[J].Journal of Harbin Institute of Technology,2013,45(9):82.DOI:10.11918/j.issn.0367-6234.2013.09.015 |
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| 摘要: |
| 针对腹部CT图像肝脏区域提取问题,提出了一种新的基于阈值法和改进的广义梯度矢量流-蛇(GGVF-Snake)模型的分割方法．首先,采用Window-Leveling算法将CT图像转换为灰度图像,突出肝脏区域,通过改进的曲率各向异性扩散滤波器对图像进行平滑滤波;其次,利用阈值法获取肝脏的初始轮廓;最后,基于改进的GGVF-Snake模型对初始轮廓进行调整得到更加平滑和精确的肝脏轮廓．通过不同的腹部CT图像序列中肝脏的分割结果表明,该方法能高效、精确的提取肝脏区域,满足临床应用的需求． |
| 关键词: GGVF-Snake 肝脏分割 腹部CT图像 |
| DOI：10.11918/j.issn.0367-6234.2013.09.015 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(4,0). |
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| Liver segmentation on abdominal CT images |
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SONG Hong1, ZHANG Chunmeng2, HUANG Xiaochuan2, LI Jiajia2
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(1.School of Software, Beijing Institute of Technology, 100081 Beijing, China; 2.School of Computer Science and Technology, Beijing Institute of Technology, 100081 Beijing, China)
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| Abstract: |
| For liver segmentation on abdominal CT images, a novel algorithm is proposed which is based on the threshold method and modified GGVF-Snake model. Firstly, the CT image is converted into grayscale by using Window-Leveling algorithm, and then Modified Curvature anisotropic diffusion filter is applied. Secondly, a threshold method is used to obtain the initial contour of liver. Finally, the accurate liver boundary is obtained by using a modified GGVF-Snake model. Experimental results show that the proposed algorithm can be applied to the segmentation of liver on abdominal CT images effectively. |
| Key words: GGVF-snake liver segmentation abdominal CT images
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