The client uses the scheme based on browser and java applete together . the map display mode uses the scheme based on vector map and grid map . thus the better combination of functions with load can be gained through respective strongpoints 客户端采用了基于浏览器和java小应用程序的结合方案，而地图的显示方式也采用结合矢量图和栅格图的方案，这样可以利用各自的优点来达到更好的功能负载结合点。
For example you can use vector information query , space data query , interactive query between the charts and the datum and so on . in the query module , you can apply the application ' s analytical function to get analytical result , which you want 在数据输出方面，本系统让用户可以按多种方式查询所需信息，查询方式有矢量图信息查询、空间数据查询、属性数据查询、图数互查等。系统具有一定的统计分析和显示功能。
Based on it , the author improves and proposes the algorithm , of contouring with 0 - 0 , the algorithm of color contour image with 0 - 0 and the algorithm of vector with 0 - 0 , which will lay a solid foundation for developing high efficiency and versatility soft of visualization 并在面向对象编程方法的基础上改进并提出了面向对象等值线生成算法、面向对象彩色云图生成算法和面向对象矢量图生成算法，为开发高效通用可视化软件奠定了基础。
One of the focuses in this dissertation is the design of a recognition quality evaluator for graph entities . the original image information corresponding to the graph entities is considered as a constrained template or allowable error range . some evaluating factors , defined by using fuzzy theory , have been proposed to express a graph entity ' s recognition quality and as the input of the quality evaluator 本文重点讨论了图素质量评价器的设计，提出采用图素识别质量特征因子来表述图素的识别质量，并以矢量图素对应的光栅图元作为约束矢量图素的模板或公差带，以此提取反映识别质量的特征因子，结合模糊理论的有关概念定义各种特征因子的表达式；图素的识别质量特征因子作为图素识别质量评价器的输入，由评价器经过处理后输出对图素识别质量的评判结果。
In paper , reaching the aim , firstly , we have researched thorough about symbol recognition and theory understanding relative theory and technology , and basing on those theory and technology , we adopt the based global characteristic symbol recognition and engineering drawing understanding algorithm which can automatic convert the vectorgraph which doesn ’ t include the relative physical information into the vectorgraph which includes the relative physical information . secondly , researching about the 2d computer animation technology and combine the cbt system , we have presented the new path animation model which include the union path description , animation pattern and time - velocity and time ? distance parts 为达到上述目标,本文首先对目前图形符号识别技术进行系统的、较深入的分析,结合民航飞机原理图特点采用基于全局特征的符号识别算法对原理图进行符号处理,并以此为基础改进了基于图的方法和全局知识的语义分析方法相结合的原理图理解算法,可将无序的矢量图转化成高层的知识表示,为动画制作提供素材,为后续的电路完整性检测及动画自动播放提供相应的知识支持。
An algorithm for detecting moving ir point target in complex background is proposed , which is based on the reverse phase feature of neighborhood ( rpfn ) of target in difference between neighbor frame images that two positions of the target in the difference image are near and the gray values of them are close to in absolute value but with inverse sign . firstly , pairs of points with rpfn are detected in the difference image between neighbor frame images , with which a virtual vector graph is made , and then the moving point target can be detected by the vectors ' sequence cumulated in vector graphs . in addition , a theorem for the convergence of detection of target contrail by this algorithm is given and proved so as to afford a solid guarantee for practical applications of the algorithm proposed in this paper . finally , some simulation results with 1000 frames from 10 typical images in complex background show that moving point targets with snr not lower than 1 . 5 can be detected effectively 基于运动点目标在邻帧差分图像中所具有的近邻反相特征,即运动点目标的两个位置相邻近、灰度值一正一负,提出一种在复杂背景下,基于红外序列图像的运动点目标检测算法.本算法利用该特征在邻帧差分图像中检测反相点对,进而构造反相点对矢量图,最后依据累积反相点对矢量图中多矢量首位相接的连续性检测出运动的点目标.文中给出并证明应用本算法能以概率1检测到运动点目标的收敛性定理.对典型复杂背景下10幅1000帧图像的仿真结果表明,当信噪比大于或等于1 . 5时,可以有效检测出运动点目标
Three kinds of results are obtained by simulation calculating the two models : the composed vector diagrams of the axial velocity ( v ) and the radial velocity ( vr ) at the different times in the symmetry section ; diagrams of curves of the velocity vector ( v ^ ) and ( vr ) at the different times in the different sections ; diagrams of the secondary flow vectors at the different times in the different sections 我们对两种不同直径的s型血管进行了有限元模拟计算，得到三种结果：在对称面内不同时刻的轴向速度v _和径向速度v _ r的合成矢量；在不同截面不同时刻的速度分量v _和v _ r的曲线图；在不同截面不同时刻的二次流的矢量图。
In this paper , first , 1 made a study of the distribution of electromagnetic field , energy , power , reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants . then , i simulated the behavior of propagation of am signal and gauss pulse signal through the waveguide by magic code , and gave the plots of electromagnetic field , energy , ponyting vector and their spectrums at different time and different position 在本论文中，作者首先推导出分段填充不同介质的波导中的电磁场分布、能量、传输功率以及反射系数和传输系数的表达式。然后，采用magic程序模拟了这种结构的波导中的电磁场的传播情况，得到了在不同时刻和不同位置处的电磁场分布图、能量图、坡印廷矢量图以及它们的频谱图。
Then a dynamic visualization software - - afterdraw , which aims at 2d elastic - plastic fem , is programmed . afterdraw is capable of drawing the deformation figures of material , the regions of plasticity and the regions of tension distributing figures , primary stress vector figures and primary strain vector figures . besides , atterdraw could realistically dynamically simulate the deformation of the whole process of construction 在此基础上，研究了针对二维弹塑性有限元的动态可视化后处理软件afterdraw ， afterdraw能够绘制基坑工程各步施工的结构变形图、塑性区和受拉破坏区分布图、主应力矢量图和位移矢量图， afterdraw还能够逼真地动念模拟基坑工程整个施工过程变形情况。
The total auto symbol recognition disposition method proposed in this paper can deal with the problem which converts papery of aircraft theory graphics or system graphics into vectorgraphs which can lose some useful information . furthermore , the display technique with multi - level buffer not only resolves the problem of high - speed for aircraft theory graphics or system graphics in cbt , but also ensures scrolling and zooming in / out smoothly and avoids the flashing phenomenon efficiently 目前纸质的飞机系统图、原理图矢量化方法用基本的矢量图元按其位置来再现原始图,从而导致矢量后图中各符号整体信息丢失问题,该文提出的自动符号识别方法可有效地解决该问题,此外改进多级缓冲显示技术不但可有效地解决cbt中系统图、飞机原理图的快速显示,而且也保证图形可连续光滑滚动和消除放缩拖动时屏幕闪烁现象。
