discrete adj. 1.分离的,分立的;显然有别的。 2.不连续的;【数学】离散的;【哲学】抽象的 (opp. concrete)。 A nebula is really a discrete mass of innumerous stars. 一团星云实际上是无数星体不连续的集合体。 adv. -ly
Furthermore , this thesis has studied the characteristics of ballistic trajectory data of fuze system , and has developed the program for preconditioning the data in the process of the simulation , which is based on the least square method programming with visual c + + 5 . 0 and has enhanced the feasibility of this system . this study is done on account of the fact that the discrete data can not be accepted by the simulation software - working model , which must be turned into successive function 另外,在利用workingmodel对引信系统进行运动学和动力学仿真时,需要输入现场试验测得的数据,而这些离散的试验数据,必须进行计算和前处理(函数化) ,才可以应用于仿真,本文就此问题深入研究了引信系统的弹道数据的特点,并基于visualc + + 5
In addition , for regular grid data it presents an effective algorithm for some particularity that there are four isopoints in one grid cell and for random discrete data points it lays emphasis on triangulation . this paper firstly put forward three principles : attribute principle of adjoining isolines , attribute principle of isoregions and inclusion principle of ioslines after studying the character of isolines . the bivalue - topology algorithm based on boundary tracking is given , which is founded on the three principle and is used to fill isoregions 另外,在这两部分中除了对边信息链表的形成过程以及基于边信息链表的等值线生成做了详细讨论外,还对规则格网数据的等值线追踪中,一个网格单元上含四个等值点的特殊情形给出了一个比较有效的算法,并在任意离散点数据部分对平面点集的三角剖分进行了着重讨论。
This process is as follows : firstly , the data of different section contour and of section line have been obtained by reverse - engineering ; secondly , non - uniform b - spline approximation algorithm is used to fit the discrete data ; then the data have been optimized and reduced by adopting adaptive sampling of key points of the fitted curve based on vertical distance , sequently the adaptive sampling data is transformed into the format of the . ibl file of the famous 3 - d design software pro / e . therefore we reconstruct the surface and a model is generated ; lastly , the effectiveness of the adopted algorithm and modeling approach are demonstrated by the experiments 建模型的过程中,首先运用逆向工程测量方法,获得曲面物体上不同截面轮廓线的测量数据点列,接着对测量数据点进行平滑处理,用最小二乘法求解基于数据点列的控制多边形,以非均匀三次b样条曲线拟合截面轮廓曲线;然后利用基于垂距的数据采样算法,对拟合曲线上的数据点进行重新采样,达到优化数据点的分布及减少描述曲线数据量的目的。
In the field of resource and environment science , digital image processing technology is a new advanced technology . it is a comprehensive technology that transforms , simulates and emulates spatial discrete data , and expresses spatial information models with pictures , solves the analysis of natural processes , then provides us with the basis of management and policy decisions 在资源与环境领域中,数字图像处理技术是一项高新技术,它是在计算机硬件系统支持下,对空间离散数据进行变换、模拟与仿真,用图像表达空间信息模型,解决自然过程分析,进而为人类提供管理与决策依据的一种综合技术。