Device for inspecting shape of road travel surface

A device installed in a vehicle, for photographing road travel surface while the vehicle travels and inspecting a shape of the road travel surface based on photographic information obtained by the photographing, comprising

• travel surface illumination means for emitting a light beam to the road travel surface along a travel surface photography axis set parallel to a travel direction of the vehicle,
• travel surface photography means installed in the vehicle at a predetermined reference angle for acquiring information necessary for a light section method by sequentially photographing from an oblique direction, with a predetermined photography range set as a unit, the travel surface photography axis in regions to which the light beam is emitted by the travel surface illumination means as a plurality of units of photography ranges of photographic images, and acquiring photographic image information,
• inclination information generation means for acquiring inclination information which shows inclination state of the travel surface photography means,
• movement information acquisition means for acquiring travel distance information of the vehicle, and
• road surface profile generation means for generating a road surface profile by
• generating corrected image information in which a tilt in the photographic image information has been corrected by using the inclination information, on the basis of the photographic imager information, the inclination information, and the movement information,
• then arranging the corrected image information by using the movement information,
• specifying vertical movement information pertaining to the travel surface photography means from image contents of overlapped regions,
• generating extracted image information by partially cutting out the corrected image information and,
• while correcting height of the corrected image by using the vertical movement information from the corrected image information, sequentially arranging and connecting the extracted image information.