The numerical value solution of atmospheric radiation transmission equation (RTE) is used to construct point spread function and implement the restoration of all kinds of atmosphere degraded images under different weather conditions.
1. Analyzes the basic features of a special GIS applications and its basic demand, points out the localization of integrated GIS platforms and its inelasticity, and presents a spatial data model based on constructed point set storage to satisfy with the demand of the special GIS application.
Starts from analyzing a special GIS applications, the paper points out its widely existence in DSS and MIS, presents a spatial data model based on constructed point set storage and its developed spatial-temporal model, and proves the validity and practicability of the presented models from theory and actual application.
In this paper,the authors discuss the development of fractal coding methods and IFS theory briefly,then pre-sent the idea of multi_IFS of point set,define the concept of attached set of affine transformation of multi_IFS,and pro-pose two algorithms of computing attached set,with which put foreward multi_IFS coding algorithm of point set and give the result of one dimesion finally.
We now construct point q and consider the set of cameras from which q is visible.
例句来源
We devote Section 3 to construct point-wise high order quadratures based on a detailed asymptotic analysis of the integrands.
例句来源
On the basis of the splitting matirx and the introduction of interval relaxation operators, two new interval relaxation iteration methods are presented. The new algorithm need not compute inverse matrix and they converge faster to the solution than the known Hansen interval method. In some cases square convergence occurs. In addition, apply the Newton SOR method for constructing a sequence of real vectors which converges faster to the solution. Some numerical examples are given.
In the fields, points of maximum and minmum elevations together with points of curvature inflection are chosen and executing levelling nets. A non - linear mathematical model for contouring is established according to three kind of points above. And some special terrestrial points are also considered as references. This method proves to be more rigorous than the conventional methods and also reduces the amount of field work requried.
t's known to all that the urban geographical information may be huge,so it is difficult to manage on microcomputer.This paper introduces a method that can be used in urban geographical information management on microcomputer, in which the city map is divided into a serial“square block”with 250 m length and 250 m width,and a relation between the point coordinates and the code of relevant“block”is constructed.The author designs a“point”,“line”and “plane” search algorithm,which can be used to search,edit and m...