计算机工程与应用 ›› 2015, Vol. 51 ›› Issue (12): 194-197.

• 图形图像处理 • 上一篇    下一篇

基于两阶段区域生长的肝内血管分割算法

刘  鑫1,陈永健2,万洪林1,孙娜娜1   

  1. 1.山东师范大学 物理与电子科学学院,济南 250014
    2.海信集团有限公司,山东 青岛 266071
  • 出版日期:2015-06-15 发布日期:2015-06-30

Liver vessel segmentation algorithm using two-stage region growing

LIU Xin1, CHEN Yongjian2, WAN Honglin1, SUN Nana1   

  1. 1.School of Physical and Electronics, Shandong Normal University, Jinan 250014, China
    2.Hisense Group Co., Ltd, Qingdao, Shandong 266071, China
  • Online:2015-06-15 Published:2015-06-30

摘要: 提出一种基于两阶段区域生长法的肝内血管分割算法。在第一阶段,使用三维区域生长法从CT图像序列中提取出肝脏,区域生长法的生长准则由均值和方差双阈值来决定。分别通过形态学运算和中值滤波对分割出的肝脏序列进行降噪处理。在第二阶段,再次利用区域生长法从已经得到的三维肝脏图像序列中分割出血管,区域生长法的生长准则仅由均值作为单阈值决定。对两阶段区域生长法的实验结果进行三维重建,与传统区域生长法的三维重建结果相比较,能够体现出该算法的准确性。

关键词: 图像处理, 血管分割, 区域生长, 形态学运算, 手术模拟

Abstract: The algorithm for liver vessel segmentation is proposed by using the two-stage region growing. In the first stage, the 3D region growing constrained by intensity and variance is performed to isolate liver from CT sequence. Then the following morphologic operations and median filter are employed to eliminate noise. In the second stage, another region growing restricted with intensity is used to extract vessels from the resulted 3D liver data. Compared to single region growing, the experimental results of 3D reconstruction by the method depict the accuracy of the proposed algorithm.

Key words: image processing, vessel segmentation, region growing, morphologic operation, surgical simulation