摘要
针对计算机辅助肝脏手术中的空间配准技术中的手术前的CT图像与手术中的实际空间进行配准问题,本文提出一种基于ICP算法的手术空间配准技术,通过利用几何哈希法筛选出最佳的三维变换,然后用该变换作用到整个点云,最后完成点云的拼接,使得准确度更高。仿真试验结果表明,改进的ICP拼接算法精度高,适用于计算机辅助肝脏手术。
Aiming at the problem of CT image is different before and during in computer aided liver operation correction in space, we come up with a correction method based on ICP algorithm, screening out the best three-dimensional transformation by geometric hashing methods, then use these translation to effect the whole point clouds, completing the point cloud splitting, to make the result more accurate. The results of simulation and experimental show, The accuracy of improved ICP algorithm is higher, which is suitable for computer aided liver operation.
出处
《科技通报》
北大核心
2014年第1期162-165,共4页
Bulletin of Science and Technology
基金
黑龙江省教育厅自然科学项目基金(12523060)
关键词
ICP算法
肝脏手术
点云拼接
空间配准
ICP algorithm
liver operation
point cloud splitting
correction in space
