Digital line drawing generation method and device

The invention relates to a digital line drawing generation method and device, computer equipment and a storage medium. The method comprises the steps of obtaining point cloud data and image data of atarget area; classifying the point cloud data, and extracting ground point cloud data and non-ground point cloud data; obtaining a digital elevation model according to the ground point cloud data; obtaining a digital orthoimage according to the image data; obtaining a first image according to the non-ground point cloud data, wherein the first image comprises coordinate information of non-ground point cloud data; fusing the digital elevation model and the digital orthoimage to obtain a second image, wherein the second image comprises coordinate information of the ground point cloud data; and obtaining the digital line map of the target area according to the digital orthoimage, the first image and the second image. By adopting the method provided by the invention, the precision of digital line mapping can be improve