Apparatus and method of generating three-dimensional data, and monitoring system including three-dimensional data generation apparatus

Abstract

A three-dimensional data generation apparatus using measurement data from a three-dimensional sensor. The apparatus includes a measured coordinates obtaining section for obtaining measured coordinates of an object in a three-axis rectangular coordinate system set in an observation area, based on measurement data from a three-dimensional sensor measuring the observation area; and a subdivision information preparing section for defining a reference plane parallel to an X-Y plane of the three-axis rectangular coordinate system in the observation area, uniformly divide the reference plane into a plurality of subdivisions, and assign to a subdivision, among the subdivisions, that contains X-Y coordinate values of the measured coordinates of the object, a Z value of the same measured coordinates as a representative height of the subdivision. Three-dimensional data of the observation area is generated by using a position and dimensions in the reference plane and the representative height, of each of the subdivisions.