Surgery Space and Real Space Registration Based on Points

Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (6): 233-235.

• 工程与应用 • Previous Articles Next Articles

Surgery Space and Real Space Registration Based on Points

Renfeng Xu

Software Engineering Department, Shenzhen Polytechnic, Shenzhen 518055, China

Received:2006-03-16 Revised:1900-01-01 Online:2007-02-21 Published:2007-02-21

图像空间与手术空间点配准算法

周振环徐人凤

深圳职业技术学院深圳职业技术学院计算机应用工程系

通讯作者: 周振环

Abstract

Abstract: In the surgery navigation system, registration between real space and image space is based on points matching, unconstrained Least-Squares is usually used for 3D rigid transform matrix, but the matrix exists deformation of shear, scale and reflect, is not strict orthogonal matrix because of measurement error. This paper presents constrained Least-Squares, constraint condition is the orthogonal matrix, iteration is used to make the matrix orthogonal, up to optimization matrix. Practical implementation of point matching can be solved theoretically.

Key words: image registration, points matching, surgery navigation system

摘要： 手术导航系统中手术空间与图像空间点配准方法，普遍使用无约束最小二乘法求出三维刚体变换矩阵，由于测量误差，求出的矩阵存在着缩放、错切和反射等形变，不是严格的三维刚体变换矩阵。s本文提出有约束最小二乘法，约束条件为正交矩阵，使用迭代法使变换矩阵正交化，从而逼近最优变换矩阵，从理论上解决了点配准算法的工程实现。

关键词: 图像配准, 点匹配, 手术导航系统

Renfeng Xu.

Surgery Space and Real Space Registration Based on Points

[J]. Computer Engineering and Applications, 2007, 43(6): 233-235.

周振环徐人凤.

图像空间与手术空间点配准算法

[J]. 计算机工程与应用, 2007, 43(6): 233-235.

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Surgery Space and Real Space Registration Based on Points

图像空间与手术空间点配准算法

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