| 地图信息系统中的地图矢量化及面查询 |
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| 引用本文： | 王绍棣,杨瑾.地图信息系统中的地图矢量化及面查询[J].南京邮电大学学报(自然科学版),1996(2). |
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| 作者姓名： | 王绍棣 杨瑾 |
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| 作者单位： | 南京邮电学院计算机工程系 |
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| 摘 要： | 本地图信息系统采用面向对象的分析设计方法，在Ｗｉｎｄｏｗｓ平台上，利用ＯＷＴ（ＯｂｊｅｃｔＷｉｎｄｏｗｓＬａｎｇｕａｇｅ）开发的。系统分为矢量化和面向对象数据库系统两大部分，。本文讨论矢量化部分，利用优化轮廓算法对地图上的信息进行半自动矢量化，利用Ｃ＋＋支持抽象数据类型的机制，将矢量化得到的信息以对象形式存储。矢量化后的地图有较好的编辑功能，并实现了面查询。
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| 关 键 词： | 计算机绘图，图像数字化处理，面向对象技术，矢量化 |
Map Vectoring and Surface Inquiring in Map Information System |
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| Wang Shaodi,Yang Jing.Map Vectoring and Surface Inquiring in Map Information System[J].Journal of Nanjing University of Posts and Telecommunications,1996(2). |
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| Authors: | Wang Shaodi Yang Jing |
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| Abstract: | he analysis and design of our map information system(GIS)is implemeted with the object-oriented method.It is develoed with Object Windows Language(OWL)on the Windows platform.The system have two parts:one is about the vectoring part,the other is about the object-oriented database system.The former is discussed here.Semi-automatic vectoring,peerforming data transforming from a bit mab, is implemented by the method of optimized algorithm of Border-Following.Then the vectored data are stored in form of objects where Abstract Data Type(ADT)techniue is used.Very good performances of editing and powerful surface inquring on a vectored map are obtained. |
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| Keywords: | Computer graphic Digitized processing of image Object-oriented technique Vectorization |
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