摘要
电磁跟踪设备Fastrak在虚拟手术中医疗器械的定位中有很重要的应用,为此重点研究了Fastrak与OpenGL的编程接口,以及在复杂电磁场干扰环境下的数据滤波校正。利用快速傅立叶变换,设计了一个带通滤波器对Fastrak噪声数据进行过滤,确保了虚拟手术过程中医疗器械的平稳、准确实施。研究的滤波校正方法已成功应用于虚拟膝关节镜手术系统中,为虚拟手术系统提供了合理的Fastrak数据。
Electromagnetic tracking device Fastrak is mostly applied in virtual surgery system to aid the location for medical instrument. How to integrate Fastrak into the OpenGL graphics interface and how to filter and calibrate data in complicated and high noise environment were studied.. In order to keep virtual surgery stable and accuracy, FFT algorithm was used and a band-pass filter was to eliminate the disturbed noise, the reasonable data were achieved and the filtering and calibrating method has been successfully applied in virtual arthroscope surgery system.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2006年第5期1243-1246,共4页
Journal of System Simulation
基金
国家自然科学基金(60371036)
关键词
电磁跟踪
虚拟手术
OPENGL
滤波校正
electromagnetic tracking
virtual surgery
OpenGL
filtering and calibration
