| Video surveillance has been developed for a long time as a security method. Nowadays, with the development of the information technology, digital video surveillance has become an important domain. Products for surveillance recording system are required to be networked and intelligent, with high resolution and low bit rate. Meanwhile, embedding technology is much potential in surveillance systems. Based on actuality and tendency above, much related research and design about security and surveillance are introduced in this thesis as follows:At first hardware platform based on TMS320DM642 about video processing is designed and finished, which consists of DSP module, external memory module, video decoder module and power module that interact through EMIF bus, I2C bus, VP bus and PCI bus.Corresponding to hardware platform above, transplantable software is designed and programed, including system software on DSP and application software on PC. Especially, the architecture of RF5 and WinDriver software are introduced and in use.Then motion detection and object tracking around intelligent video surveillance technology are summarized. Its algorithms customized on DSP and flow chart are given, in which selection of threshold, detection of shadow, analysis of continuity, use of invariant moment and utility of bounding box are mainly discussed.Finally the present results about testing the above system and simulating the above algorithms are provided. It is concluded that some components need improving and upgrading.Advanced intelligent video surveillance technology will improve the degree of automation of traditional video surveillance system. It will have more significance for economy, national defense and public security. |
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