Ambient-Assisted Living for Image Context-Aware System on Smart City(2/3)

Smart city uses information and communication technologies to enhance quality, performance and interactivity of urban services, to reduce costs and resource consumption and to improve contact between citizens and government. In IOT booming era, integrating different technology systems helps to enhance the quality of life and to reach the goal of Ambient Assisted Living (AAL). To implement the AAL system in smart city, we propose the event detection algorithm which uses in smart city. Our project focus on the surveillance system in the streets and driving camera recorder. We use PTZ intelligent camera to detect whether special event happened or not. We divide the system into two modes, “normal mode and burst mode”. In normal mode, there is nothing special event happened, so we just need to transmit some frame during few seconds. In bust mode, the system will detect some special situation, like: car accident. standing water. oil. construction and danger person, then transmit the video to the user near around or coherent units for prevention. On the other hand, driving camera recorder can detect car accident and transmit the video to the cloud to help the police unit and the people to clarify the accident. Our system will contact with MAC layer to modify throughput. As the high bandwidth we can transmit high resolution. On the other hand, if the bandwidth is limited, our system will down sample the video in case to trade off the transmission quality with MAC layer.