基于虚拟弹簧的全局配准改进算法  

Improved Algorithm of Global Registration Based on Rigid Body Motion

作　　者：宋磊[1] 刘胜兰[1] 张丽艳[1] 韦虎[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《机械科学与技术》2010年第12期1663-1668,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(50875130);高等学校博士点专项科研基金项目(200802870016);江苏省科技支撑计划项目(BE2008136)资助

摘　　要：为实现多视角测量数据的全局精确配准,笔者提出一种改进的虚拟弹簧配准算法。该算法通过分析刚体在弹簧力作用下的受力过程,建立测量数据在虚拟弹簧力作用下的配准模型,从而将全局配准问题转化为对刚体线加速度和角加速度及对应位移等运动学参数的求解问题。在原有虚拟弹簧配准算法的基础上,笔者通过增加对应最近点的距离阈值等措施来提高全局配准的精度。通过对多个模型的多视角测量数据的全局配准实验,验证了本文算法的有效性。We present an improved registration algorithm based on the method of rigid body motion to achieve the global registration of multi-view measuring data.Via analyzing forces and motions of a rigid body caused by real springs,in the algorithm,we set up a registration model in which the data sets are aligned and moved by virtual springs.Then the problem for global registration of data sets are converted to the problem of solving the linear acceleration and angular acceleration related to the motion of the rigid body.Based on the existing registration method of rigid body motion,threshold of corresponding points is used in this paper to improve the precision of global registration.Experiments on a few groups of multi-view measuring data are completed to verify the improved registration algorithm.

关 键 词：多视角测量数据 全局配准 虚拟弹簧方法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]