特征空间、几何变换、相似性测度以及优化算法是设计医学图象配准方法时要考虑的四个主要因素。
Many investigator explore in the domain. Medical images registration methods have four main factors: features space, geometry transformation, similarity, and optimizing algorithm.
然后根据冠脉造影系统的透视投影模型得到两幅不同角度的造影图像之间的几何变换关系，以及空间点三维坐标的计算方法。
Then geometrical transformation matrix between views is obtained based on perspective projection model for X-ray angiography system, and 3D coordinate of spatial points are calculated.
镜面反射是欧氏空间中一类很重要的线性变换，在几何空间中有着极其形象的解释。
The specular reflection is a very important linear transformation in Euclidean space, and it has a special geometrical explanation in geometrical space.
本文根据空间反演变换的原理，运用画法几何的方法，对空间曲柄滑块机构滑块行程的确定，提出了一种新的图解法。
Based on the principle of the spatial inversion, this paper proposes a new method of determining the stroke of the slide block of the spatial slider-crank mechanism by way of descriptive geometry.
空间亲似变换是用来解决空间几何问题的一种方法。
Spatial perspective affine transformation is a method solving spatial geometric problems.
分析了GIS中用解析几何法求解空间关系的特点和缺陷，并提出了采用图形的几何变换法克服它的缺点。
This paper analyses the method of analytic geometry for resolving spatial relationship in GIS and summarizes its limitation.
分析了GIS中用解析几何法求解空间关系的特点和缺陷，并提出了采用图形的几何变换法克服它的缺点。
This paper analyses the method of analytic geometry for resolving spatial relationship in GIS and summarizes its limitation.
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