Discussion for Navigation Electronic Map Data(EMD) Increment Updating Mode 导航电子地图数据(EMD)增量更新模式探讨
The data collection means the processing of digitizing all kinds of geographic information into the electronic map data formats. 数据采集是指将各种地学信息通过某种数字化方法转换为电子地图数据(EMD)形式的过程。
Electronic map automatic note system is composed by three parts, data management module, data pretreatment module and note module, which has two big functions, electronic map data management and map plot. 电子地图自动注记系统由数据管理模块、数据预处理模块和注记模块三个部分组成,主要完成了对电子地图的数据管理和地图标绘两大功能。
Electronic map data, a more and more important kind of data, in which road network is of vital importance, is widely used in vehicle navigation system and intelligent transportation system. 电子地图数据(EMD)正在广泛应用于车辆导航系统、智能交通系统中,成为一种越来越重要的数据,其中,道路网络数据是电子地图数据(EMD)的重要组成部分。
Extraction of main map data from navigation electronic map data format kiwi 导航电子地图数据(EMD)格式Kiwi中主地图数据的提取