Research On Moving Objects Detecting System Based On FPGA

As a major research in computer vision, moving target detection has been widely used inintelligent video surveillance, intelligent transportation systems and other aspects. At thisstage, moving object detection analyzes the video signals that contains the moving targetacquisition information and separate the moving target from the context to get its movingdirection and other parameters. Moving object detection is the foundation and key to solvemany computer vision problems such as video surveillance and intelligent transportationsystems. At home and abroad, researchers have done a lot of research about detection ofmoving targets in the detection algorithm and the practical application and have made certainachievements. On the basis of these achievements, this paper uses FPGA as hardwareprocessing core and designs a moving object detection system based on a frame differencemethod.The main contents include three parts. The first part is the FPGA-based video processingsystem design. In video processing system based on FPGA, the paper designs the solutionabout FPGA-based hardware implementation of video processing. In this processing, videostream data processing program is used as the key problem of the system. The paper dividesthe system into video capture module, video data processing module, video data cache moduleand designs interface of three modules. These works provide a platform for hardwareimplementation of moving target detection algorithm. The second part is the existing motiondetection for the software. In the second part, the three major moving target detectionalgorithm is analyzed and compared, and the frame difference method is selected as thedetection algorithm. Using Sysgen Generator software produced by Xilinx, the model ofmoving target detection method based on frame difference is established. Then the model istested by the introduction of video streaming.The third part is the moving target detectionalgorithm for hardware migration.The work of third part configures a hardware system of each chip and establishes DDR SDRAM controller in order to achieve collecting and storageof the data flow in the system. Meanwhile, the algorithm model built by Sysgen Generator isdownloaded to FPGA chip to achieve hardware implementation of the algorithm. Finally,ChipScope software can tests each module of system.Based on research of motion detection algorithm, the paper design the moving objectdetection system based on frame differential method. It has some effect about this systemfurther application in pratice.