虚拟手术中心脏跳动仿真技术研究  

Research on heart beat simulation technology in virtual surgery

作　　者：刘波 陈国栋[1] 王娜[2] 

机构地区：[1]福州大学物理与信息工程学院,福建福州350108 [2]福建师范大学福清分校,福建福清350300

出　　处：《信息技术与网络安全》2018年第2期143-146,共4页Information Technology and Network Security

摘　　要：提出一种可实时运行的基于示例形状匹配的心脏跳动仿真方法,该方法通过简单的示例形态来控制心脏跳动过程中发生的形变行为。形变描述符被用来唯一定义形变对象的形变,并利用该描述符将形变优选空间表示为示例形态的线性组合。在每个时间步长中,当前的形变描述符被线性投影到示例歧管上,然后当计算目标位置时其被用于修改每个局部区域的静止形态。实验证明该方法能够真实地反映心脏的形变效果,达到实时模拟心脏跳动的目的。This paper presents an example-based shape matching heartbeat simulation method that runs in real time, which directs the deformation of heartbeat by supplying with example poses that characterize the heart beating. The unique descriptor of a deformation is defined to describe the deformation of deformed object and this descriptor allows us to represent the poses pace as a linear blending of examples. At each time step, the current deformation descriptor is linearly projected onto the example manifold, and then used to modify the rest shape of each local region when computing goal positions. Experimental results show that our modeling approach can acquire an realistic heart deformation, and it can provide a visually plausible heartbeat effect in a real-time way.

关 键 词：心脏跳动 形状匹配 示例姿态 形变描述符 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]