摘要
在因特网上搜索动态几何图形资源是一个很大的难题。然而基于关键字搜索、分类目录搜索和基于图形的搜索的三大主流搜索技术都不适合在因特网上搜索动态几何图形资源。为了实现动态几何图形资源在因特网上的有效搜索,本文提出了动态几何图形的特征提取算法。该算法是在动态几何图形的XML文档中提取出图形的特征码来标记图形,图形的特征码主要包括点的个数、直线的条数、线段的条数、圆的个数、三角形的个数。提取了图形特征码,在搜索时候就可以把几何图形特征码作为关键字进行几何图形的检索。这也为今后研究几何图形的相似度或在因特网上建立动态几何资源库奠定了基础,具有很高的教育应用价值。
Searching for dynamic geometry figure resources is a big problem on the Internet. However , based keyword search, classified search and based on figure search are the three major search technology and they are not suitable for dynamic geometry figure resources on the Intemet. In order to effectively retrieve dynamic geometry figure resources on the Internet, the feature extraction algorithm of dynamic geometry is proposed in this passage. This algorithm is extracting graphical feature code to mark graphics in dynamic geometry XML documents.Graphical feature code mainly includes the number of points, the number of lines, the number of segments , the number of circles and the number of triangles. Extracting graphical feature code, we can take feature code as a key of geometry graphics to search in the search time. This also laid the foundation to research on geometry similarityor and to establish the dynamic geometry resource batabases in the web, so it has the very high application value of education.
出处
《科技视界》
2014年第1期188-190,共3页
Science & Technology Vision
关键词
动态几何
动态几何图形
特征码
特征提取
Dynamic geometry
Dynamic geometry figure
Feature code
Feature extration
