For Intelligent Traffic Management, Wireless Video Surveillance System

Intelligent traffic wireless video surveillance system is an advanced,powerful guarded integrated system, it directly monitors all the circumstances of intelligent traffic node with the camera and its supporting equipment(lens, cloud deck,etc.),and at the same time it can sends these image contents to the monitoring center through the wireless network for real-time remote monitoring. With the rapid development of technology of embedded system,image processing and wireless network transmission,wireless video surveillance technology also develops rapidly,video surveillance has entered the wireless digital network era,so that traditional analog video surveillance system and PC-based digital video surveillance system has been unable to meet the needs of modern society,so wireless network video surveillance system based on embedded technology become a new trend of video surveillance system,which has broad application prospects and practical value.On the basis of analyzing previous research achievements,the paper systematically and in-depth studies the technology of embedded system development,which is based on linux and ARM,and focuses on the software design and implementation methods of intelligent traffic embedded video surveillance terminal based on S3C6410,and gives out the implementations of the intelligent traffic wireless video surveillance server.Then establishment of embedded Linux cross-compiler environment and development process of embedded software are introduced.We set up the software platform of intelligent traffic wireless video surveillance terminal and server,by doing configuration and writing of BootLoader and transplantation and compile of Linux kernel and other application program.At last,the design idea and key code implementation of every functional module of intelligent traffic wireless video surveillance server software department are analyzed in detail,the acquisition of video image is accomplished with Linux video4linux APIs and double buffering technique, the video compresion technology based on H.264 protocol is adopted in video data compression, Wireless transmission of video data using streaming media technology based on RTP and RTCP protocol, as well as the draft RFC3984 for the RTP H.264 video streaming real-time data transmission services, and the modules of video images show uses a open source software called VLC,which is easy to maintain,update and upgrade. The super-resolution reconstruction techniques try to estimate the high-resolution image by combining the nonredundant information that is available into a sequence of low-resolution images,and it is very suitable dor the WiFi network with high BER.The intelligent traffic embedded video surveillance server designed in this paper has such characteristics as convenient installation,remote client users can directly access the video server in our surveillance system through IE,real-time video image transmits fluent,no evidence jitter,has good stability,higher cost-effective and practical value.