| 胡凌燕,史康柏,徐少平,刘小平.基于改进移动立方体算法的三维重建[J].中国医学影像技术,2019,35(6):925~929 |
| 基于改进移动立方体算法的三维重建 |
| Improved marching cubes algorithm for 3D reconstruction |
| 投稿时间：2018-11-13 修订日期：2019-04-08 |
| DOI：10.13929/j.1003-3289.201811069 |
| 中文关键词: 移动立方体算法 区域增长法 通用树 等值点 图像处理,计算机辅助 |
| 英文关键词:marching cubes algorithm region growing methods universal tree contour points image processing, computer-assisted |
| 基金项目:国家自然科学基金（61563035、81501560、61662044、61663027）、江西省杰出青年人才资助计划（20171BCB23008）。 |
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| 中文摘要: |
| 目的 探讨基于改进移动立方体算法的腹部器官CT图像三维重建效果。方法 提出一种基于区域增长法的通用树结构和移动等值点法的自适应改进移动立方体算法，先进行医学图像分割，选取种子点后标记出与阈值相交的所有体元；创建通用树结构，将相交体元插入子节点中，确定基于通用树的顶点索引方式；通过移动等值点合并共面三角形，简化等值点信息的获取。基于1名志愿者的腹部CT图像，采用传统移动立方体算法和改进移动立方体算法构建肾脏三维模型，并比较其效果。结果 与传统算法比较，改进的移动立方体算法生成的三角面片个数减少39.20%，算法执行效率提高37.59%，三维模型表面平滑逼真，局部细节真实性较好。结论 基于改进移动立方体的算法可更快速精确地实现CT图像腹部器官三维重建。 |
| 英文摘要: |
| Objective To explore the effect of three-dimensional reconstruction of abdominal organ CT images based on improved moving cube algorithm. Methods An adaptive improved marching cube algorithm based on the universal tree structure and the contour points method based on the regional growth method were proposed. Firstly, the medical images were segmented, and all the voxels intersecting with the threshold were marked after the seed points were selected. A general tree structure was created to insert intersecting voxels into sub-nodes and determine the vertex index method based on the general tree. Simplify the acquisition of equivalence information by moving equivalence points to merge coplanar triangles. Based on abdominal CT images of a volunteer, a three-dimensional kidney model was constructed by using traditional moving cube algorithm and improved moving cube algorithm, and the effects were compared. Results Compared with traditional algorithm, the triangle facets generated with the improved moving cube algorithm were reduced by 39.20%, the efficiency of the algorithm was improved by 37.59%, the surface of the three-dimensional model was smooth and lifelike, and the local details were more accurate. Conclusion Based on the improved moving cube algorithm, three-dimensional reconstruction of abdominal organs in CT images can be achieved quickly and accurately. |
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