基于PDA的移动导航系统的动态标注

动态标注是移动导航系统传达导航信息的一个重要方面。针对PDA移动导航系统的特点,围绕如何在导航过程中正确、高效地进行地图动态标注这一问题进行了研究。对于点状地物,提出了一种基于格网整体规划,分块注记的方法;对于线状地物,提出了拆分注记文本、投影标注的方法。该方法能够有效地避免注记压盖和信息缺损等现象,同时还能保证在PDA导航过程中实时、高效地进行动态标注。保证了地图显示的可读性和美观程度,同时也保持了地图浏览的流畅性。

On Dynamic Annotation of Mobile Navigation System Based on PDA

The dynamic annotation is one of an important area to mobile navigation system.Aiming at the characteristic of mobile navigation,this paper proposes a new dynamic annotation algorithm based on grid block technology and dividing annotations.The method can avoid those problems such as overlapping among annotations and loss of information during navigating on PDA,which can not only improve the beauty and readability of map,but also keep the fluency when map's scene is changing.