SPATIAL INFORMATION DATABASE GENERATING DEVICE AND SPATIAL INFORMATION DATABASE GENERATING PROGRAM

摘要

An orthographic projection creating unit (18) creates an orthographic projection image from an optical image of an ground surface acquired by an optical camera (10), and a DSM generating unit (20) generates a DSM from the orthographic projection image. A laser point group data generating unit (22) generates three-dimensional point group data based on a laser measurement result of the ground surface by a laser measuring device. An object generating unit (24) groups altitude data of the DSM and altitude data of the three-dimensional point group data for each of objects such as buildings. A synthesizing unit (26) extracts the same objects from the grouped altitude data of the DSM and three-dimensional point group data, associates the objects with each other based on respective coordinate information thereof, and replaces altitude information of the optical image by high-accuracy altitude information of the three-dimensional point group data for each of the objects.