Measurement apparatus, measurement method, and feature identification apparatus

Abstract

It is an object to measure a position of a feature around a road. An image memory unit stores images in which neighborhood of the road is captured. Further, a three-dimensional point cloud model memory unitstores a point cloud showing three-dimensional coordinates obtained by laser measurement which is carried out simultaneously to the image-capturing of the images as a road surface shape model. A model projecting unitprojects a point cloud on the image, and an image displaying unitdisplays the point cloud superimposed with the image on the displaying device. Using an image point inputting unit, a pixel on a feature of a measurement target is specified by a user as a measurement image point. A neighborhood extracting unitextracts a point which is located adjacent to the measurement image point and superimposed on the feature for the measurement target from the point cloud. A feature position calculating unitoutputs three-dimensional coordinates shown by the extracted point as three-dimensional coordinates of the feature for the measurement target.