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Recently, many concrete social infrastructures are beginning to reach the end of their useful lives. Therefore, it is important to evaluate their condition. In this paper, we propose a method of concrete crack direction detection using visual and audio sensors. Firstly, three-dimensional measurement of the concrete surface is performed by using the light-section method. The obtained point cloud data...
We propose a feature extraction method for lane changes of other traffic participants. According to previous research, over 90 % of car crashes are caused by human mistakes, and lane changes are the main factor. Therefore, if an intelligent system can predict a lane change and alarm a driver before another vehicle crosses the center line, this can contribute to reducing the accident rate. The main...
A lot of plumbings such as gas pipes and water pipes exist in public utilities, factories and so on. The use of an omni-directional camera which can take images of 360 deg in surroundings at a time is effective for pipe inspection. However, shape measurement is difficult only with the omnidirectional camera. Therefore, in this paper, we propose a reconstruction method of a piping shape by using a...
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