地图信息的分层提取

提出了一种分层提取彩色地图信息的方法。首先根据一般地图中区域要素的结构和颜色特点，利用统计的方法实现区域规范化，这一步基本上不需要人工干预；然后采用模板匹配方法提取地图中的标识，这些识别出来的标识一方面作为一层信息被提取出来，另一方面对后面的道路的提取有着重要的作用；提取道路时，充分利用它们的颜色特征和连通特性，结合前面提取出来的标识以及地图中的其它要素对道路进行连接、修补处理。试验结果表明了该方法的有效性。

Map Information Extraction by Layer

A method for extracting information of maps by layer is proposed in this paper. Based on the characteristics of frame and color of area on the map, a statistic method is applied to normalize the area automatically. The symbols,which are useful in maps,are also extracted with template matching method, they can be of great importance to the extraction of roads. Noise - Characteristics and the symbols, together with the connectivity of roads are applied to the connection and repair of roads. The effectiveness is proved by experiments.