The research on new generation of Intelligent Visual Surveillance is a new arising font field with many challenges. It aims to endow surveillance systems with the ability of analyzing scene contents

make surveillance tasks fulfilled automatically and intelligently

which has a large potential of application. There are four main issues in the process of intelligent analysis of typical visual surveillance system

detection

classification

tracking of objects and analysis of video contents. According to the real applications

video contents analysis can he abnormal detection

person recognition

understanding and description of video contents etc. In this paper

in addition to make a survey on the research progresses of the key technologies of visual surveillance

the concept of super resolution restoration is further introduced to this field to enhance the quality of the surveillance sequence. The main algorithms of super resolution restoration and its applications in visual surveillance are discussed in detail.