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Nowadays, the probability of public safety events around the world increase quickly. Recently, with the development of mobile network and intelligent mobile phones, social media users play an important role of the evolution and management of a public safety event. One of the important functions of Weibo is to monitor real time public safety events, such as fire, explosion, traffic jam, etc. Weibo...
AdaBoost algorithm based on Haar-like features can achieves high accuracy (above 95%) in object detection. Meanwhile massive computing power is needed to implement the cascaded classifiers involved in AdaBoost detection. To solve this problem, several dedicated hardware solutions have been proposed for real-time applications. In this work, a novel heterogeneous architecture of an AdaBoost detector...
This paper proposes a new gun-dome camera cooperative system which solves the above problem partly. The system adopts master-slave static panorama-variable view dual-camera cooperative video-monitoring system. In this dual-camera system the gun camera (static camera) with wide-angel lenses is in charge of the pedestrian detection and the dome camera can manoeuvre its focus and cradle orientation to...
Detection about urban emergency events, e.g., The fires, storms, traffic jams is of great importance to protect the security of humans. While there are limited physical sensors such as surveillance cameras in a city, urban emergency events are still difficult to be detected for their real-time feature. Recently, social media feeds are rapidly emerging as a novel platform for providing and dissemination...
Recent years, data amount is increasing rapidly, indicating that we are in the era of big data, which brings opportunities and challenges. In this paper, we illustrate the big data storage and management status, analyze the problems and finally propose solutions.
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