Topographic information transmission device, construction management system, and topographic information transmission method

摘要

Topographic information transmission devices (10) installed at each construction site (F) are each provided with: an image data receiving unit which receives a plurality of items of image data obtained by photographing the topography of the construction site (F); a three-dimensional data creating unit which creates three-dimensional data relating to the construction site (F) on the basis of the plurality of items of image data; a volume reduction processing unit which performs volume reduction processing to reduce the total data volume of the created three-dimensional data; and a topographic information transmitting unit which transmits volume-reduced three-dimensional data, which are the three-dimensional data that have been subjected to the volume reduction processing, to an information providing device (2).