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Abstract:
Real-time monitoring using CCTV is performed 24 hours a day at the major points of roads, tunnels and bridges. In particular, tunnels and bridges are subject to regulations regarding regular monitoring, traffic flow and facility management for all sections. Even in the case of roads, CCTV monitoring is conducted around the intersection, and the CCTV monitoring system is constructed and operated to monitor the entire sections in urban roads and expressways. However, since the same background is displayed on the screen of the CCTV installed at different positions in tunnels and bridges, it is difficult to quickly and accurately detect specific position by the CCTV screen alone. This in turn makes it impossible for the beginner of the system operation to respond quickly to the unexpected situation on the CCTV screen. To overcome this problem, this study proposed a methodology for road monitoring utilizing image registration with the use of overlapping part of the CCTV image. In this case, since the image seen from the side of the road was collected due to the CCTV installed on the side of the road, the collected image was corrected to that taken from the top to conduct image registration. In addition, the optimum application methodology was derived by analyzing the error rate of the image registration according to the installation height of CCTV.
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