vector image中文什么意思

例句与用法

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1. The image class is an abstract base class that provides methods for working with raster images bitmaps and vector images metafiles
   类是抽象基类，它提供了处理光栅图像（位图）和矢量图像（图元文件）的方法。
2. Especially it stresses the method of modeling 3d terrain landscape using dem & digital remote sensing image based on opengl and the implementation of vector image subsystem for planning and editing railway line
   主要介绍了基于opengl利用数字高程模型、数字遥感影像重建三维地形景观的方法、用于铁路设计的矢量图形子系统，并在此基础上开发了数字铁路选线系统。
3. The algorithm takes advantage of the merits of the watermarks both in low frequency and high frequency and can embed more information with less distortion . experimental results show the algorithm is robust to many common image operations . as for the vector map data , an uniform model of embeding watermark for vector maps and raster maps is proposed after current trend of research and watermarking methods of 3 - d vector images are summarized , primary study results show the model is effective and promising to further research
   目前该问题在国内外都还处于探索阶段，作者在分析了国内外三维矢量水印的研究状况、研究方法后，提出了将矢量数据中的部分信息转化为栅格形式后再嵌入水印的方法，该方法使地图栅格数据和矢量数据在嵌入水印时能够使用统一模型，初步的实验结果表明该方法为二维地图矢量数据的水印嵌入开辟了一种新途径。
4. The prominent features of this algorithm are as follows : correctly dealing with cross and corner by adopting junction recovery process which adjusts the length of tracking step according to the demand ; compressing the amount of data , editing image and drawing new graph more easily by extracting coordinates of the center , radius , start point and end point of circle , avoiding the gap of circular arc ; ensuring the critical points in the image as less as possible . the results show this vectorization algorithm can make good vector images
   该算法在处理拐角、交叉区域时，运用了矫正处理流程，通过调整步长以产生正确的矢量；在处理圆和圆弧时，用圆心、半径、圆弧的起点和终点表示，大大减少了图元占用的存储空间，使得对图形的进一步处理更容易，效果更好，同时也解决了圆弧断裂的问题；在提取关键点的过程中，保证了整个图像中尽可能少的关键点数量。