彩色公路地图道路自动获取的结构元素法

A Structural Element Method of Road Automatic Acquisition from Highway Color Maps

为了适应栅格地图向矢量地图转化的需求,提出一种彩色公路地图道路自动获取的结构元素方法.该方法包括2个关键步骤:第一步自动识别所有的区域像素并且将其全部置于白色;第二步通过完全消除区域中的文字、图标等噪声来获取道路.为了说明文中方法的有效性,将其应用到一大类彩色公路地图,并通过与已有方法的对比说明了其优越性.

To meet the demand of the raster-vector conversion, a structural element method is proposed which can automatically acquire roads from highway color maps. The proposed method has two key steps. First, all region pixels are recognized automatically, and then set the colors of the recognized pixels as white. Then all roads are acquired by completely eliminating noise of the region such as text and icons. Our method is applied to a class of highway color maps to verify its effectiveness. The superiority of our method is illustrated through the comparison with other existing method.