Abstract
Recently, a lot of image sensors are employed for the purpose of incidentdetection, because image sensors can provide better information. However,it is quite difficult to achieve high accuracy by image recognition methods because of their instability against environmental changes. On the other hand, supersonic wave sensors have advantages on robustness against environmental changes, and it requires less CPU (central processing unit) performance than image sensors. Therefore, the two different sensors should collaborate in order to realize a totally efficient surveillance system. Agorithms for incident detection by sensor fusion technique among the two different sensors were developed. For the covering abstract see ITRD E134653.