METHOD FOR INSPECTING DAMAGE TO THE INSIDE OF A TUNNEL BY A VISION SENSOR SYSTEM, CAPABLE OF STABLY OBTAINING IMAGES FOR DAMAGE INSPECTION

摘要

PURPOSE: A method for inspecting damage to the inside of a tunnel by a vision sensor system is provided to improve reliability of crack inspection using an image merging technique and a gray-level technique.;CONSTITUTION: A method for inspecting damage to the inside of a tunnel by a vision sensor system comprises following steps. Each vision sensor points each section of the entire inner surface of the tunnel. The position and the pointed direction of each vision sensor are controlled(28). The inside of a tunnel is scanned through each vision sensor. The multiple images corresponding to each section are obtained. The multiple images are merged, so the single merged image corresponding to the inside of tunnel side is created(34).;COPYRIGHT KIPO 2011