Abstract: A determination unit determines, on images of video data where a road set as a survey target was shot in different times, whether or not the shooting position of the image is within a tolerance value with the shooting position of any of the images as a reference, for each image having a corresponding shooting position. When the shooting position is determined to be within the tolerance value, a creation unit creates screen information of a screen where images that has been determined to be within the tolerance value is displayed in synchronization. Moreover, when the shooting position is determined to be beyond the tolerance value, the creation unit creates screen information of a screen where an image that has been determined to be beyond the tolerance value is undisplayed.

Abstract: A road surface inspection device detects an abnormal region on a road surface from the road surface on a road image captured by a camera. The road surface inspection device determines whether the detected abnormal region overlaps a trace on the road image, along which the wheels of a patrol car are expected to pass on the road surface. When the abnormal region overlaps the trace of wheels, the road surface inspection device determines whether an acceleration at the measurement time corresponding to the captured time of the road image among the accelerations measured during driving on the road surface by a G-sensor is outside a predetermined range.

Abstract: A road surface survey device specifies a position at which abnormality is detected at one of a position at which abnormality on pavement of a road surface is detected from an image of a road captured by a camera and a position at which abnormality on pavement of a road surface is detected from a change in an acceleration measured when a car runs on the road surface by a G sensor. Further, the road surface survey device derives conditions that abnormality which is not detected at the specified position can be detected, and outputs an instruction of a resurvey for the specified position under the derived conditions.