地图中等值线的识别与矢量化，可以实现从栅格地图（目前支持bmp,emf等文件）中获取等值线.GIS工程有用的。-contour map of identification and vectorization, can be achieved from the raster maps (currently supports bmp, catalog, etc.) access contours. GIS projects useful.

可以栅格化图片，支持bmp、jpg等格式的图片-Can be rasterized images, support bmp, jpg format images