DWG图形智能判断技术研究与应用

DWG图形是一种标准的矢量图形文件格式。研究矢量图形识别是建立工程制图自动阅卷与计算机辅助教学系统的基础。由于组成二维矢量图形图元类型的多样化及图形整体位置状态的不确定性,增加了矢量图形的识别与判断难度。结合开发的《三视图智能解答》系统,研究其智能识别与判断技术。系统中引入三视图导航技术,解决了图形整体定位与识别问题。实现了对矢量图形图元素信息的分类和提取,能够对所提取的信息与标准答案进行智能判断与评定。该方法已在AutoCAD2000环境下使用AutoLISP语言编程实现。

Research and Application of the Intelligent Estimate Technology for DWG Graph

DWG graph is a sort of normal vectorgraph file format. The research on the vectorgraph recognition is the basis of system establishing test paper reading automatically and computer assistant teaching in engineering drawing. Due to the diversity of graph cell style composing two-dimensional vectorgraph and the incertitude of the place of the whole graph, it enhances the difficulty for its research and estimate. Combined with the "three-view drawing intelligent solution", intelligent estimate technology was studied. With the introduction of the airmanship for three-view drawing into the system, the problem of the whole graph orientation and recognition could be solved. It was realized to sort and pick up the basic information of element for vectorgraph, and to do the intelligent estimation and assessment on the pick-up information and normal solution. This method has been successfully run in AutoCAD2000 by AutoLISP program.