基于QT/Embedded与Mitab库的嵌入式电子地图

针对当前电子地图地理位置信息在嵌入式导航终端上显示精度不高的问题，设计一种基于QT/Embedded与Mitab库的嵌入式GIS导航电子地图系统。该系统使用Qt作为图形用户界面，以MIF格式的电子地图作为数据源，通过Mitab库读取矢量电子地图几何数据和属性数据，然后对地图数据进行坐标转换算法处理，最终将电子地图准确清晰地显示到LCD屏幕上。在嵌入式Linux平台下实验结果表明，该地图具有缩放、漫游等功能，实现了嵌入式GIS地图更准确的可视化。该系统比较适合应用于旅游景点导航、城市路径规划，车辆导航等领域。

Embedded Electronic Map Based on Qt/Embedded and Mitab Library

Now, electronic map location information displays on embedded navigation terminal with low accuracy. Based on QT/Embedded and the Mitab Library, an embedded GIS navigation electronic map system is designed. The system uses Qt to develop graphics user interface. Geometry and attribute data of electronic map in MIF format is obtained through Mitab library. The extracted map data is processed using coordinates conversion algorithm. Finally the electronic map accurately and clearly displayed on the LCD screen. The experiment in embedded Linux platform indicates that the electronic map has functions such as zooming and roaming, and visualized more accurately. The system can be applied for the tourist, road planning and vehicle navigation.