In this paper , the objects that we research are spatial geometry in three - dimensional euclidean space . the definitions of spatial objects conform to opengis specification 本文的研究以三维空间几何体为研究对象,空间对象的定义符合opengis规范的要求。
Many unusual phenomena near the percolation threshold caused by random pore removal or blockage is found . first , the grid pressure distribution is anomalous ; secondly , the dispersion is much slowly than in euclidean space 模拟中发现:在渗流阈值附近,确实存在着反常弥散和优势通道现象,网格中的压力分布也和全部联通时完全不一样。
For recover the real structure of scene we should estimate the interior parameters of camera in further , and transform the structure of scene from projective space to euclidean space , this process named camera calibrating 为了恢复场景或物体在欧氏空间的形状,需要估计摄像机的内部参数,完成从射影空间到欧氏空间的转变,这个过程称为摄像机定标。
Aiming at the drawback of this method in dealing with similar targets , this paper looked the multi - evidence set as a multi - evidence space and used euclidean space distance to improve the algorithm of set - pairs proximity 文章针对该方法在处理相似目标识别时贴近度相近的缺陷,将多个证据组成的证据集合看作是由多个证据组成的证据空间并在欧氏空间权距离的基础上改进了集对贴近度算法。