The concept of digital orthophotomap

Digital Orthophoto Map (DOM) is the image data based on aerial photos or remote sensing images (monochrome/color), which is scanned, radiation corrected, embedded pixel by pixel differentially, and cut into the topographic map range, and the topographic element information is added to the image plane in the form of symbols, lines, notes, kilometer grids, outline (inside/outside) decoration, etc. It has the geometric accuracy and image characteristics of topographic map.