Human Abnormal Behavior Detection And Recognition System Development Based On DM6446

Da Vinci dual-core processor architecture patterns provide the most of the development tools available for digital video processing for the developer,including ARM+DSP dual-core processor,development tools,Linux operating system,video processing softwares and relative technology support.Transplante the human abnormal behavior detection and recognition algorithm to the Da Vinci system platform.The system will alarm when identify the abnormal behavior,which possess great prospects and values.The main research of the paper is to detect and recognize the human body abnormal behavior in real time and precisely.The study proceeds from hardware system platform development,software development platform based on Linux operating system and the algorithm of human body abnormal behavior detection and recognition.First,fulfill the circuit design of the DM6446 hardware system platform,including image processing module,power module,data storage module,video acquisition module,man-machine interaction and communication interface module.The hardware system is quite complex,part of the circuit interface running speed is very high.Analysising the PCB layered design,division of the inner layer,reflected signals and signal synchronization.Secondly,research the algorithm of human being abnormal behavior,including preprocessing of the videos and images,the algorithm of moving target detection based on the three-frame difference.In the monitoring region,as the distance from the camera,the proportion of the moving target will change.Put forward the human abnormal behavior identification algorithm based on the improved Hu invariant moment.When the image flip,translation and scale change,the algorithm all keep invariance and the recognition of the four behaviors of human body walking regularly,falling down,squatting and bending.Finally,complete the Design and implementation of software development platform,including the hardware links of cross compiling environments,the realization of software development platform,the tool installation of software development platform and environment construction of Linux operating system.Transplante the human abnormal behavior detection and recognition algorithm to the Da Vinci system platform for testing,and the realization of the system.