Design Of Moving Object Detection System Based On FPGA

With the rapid development of computer vision technology and the improvement of intelligence,robot competition also will be carried out widely.Robot involves automatic control,artificial intelligence and robot vision technology,in the game robot is mainly through the camera real-time acquisition of images to perceive environmental information,and analysis of video information to make decisions.So accurate grasp of the surrounding environment information and identify the moving target is the robot stability and fast to make the appropriate action key.This topic is based on the robot competition in five provinces of China.In order to get the movement state and position of the other side quickly,the moving target detection system is designed.The problem is based on the hardware implementation of the algorithm,and the advantages of FPGA in data processing are used to realize the video target moving target detection.The system design includes two parts:system hardware integration and function realization.The main work lies in the hardware connection of the hardware modules and the hardware language of the moving target detection algorithm.The design is based on FPGA technology to achieve video image processing,the final real-time display of moving objects binary image.The whole system is divided into two parts:image acquisition and display and moving target detection.The image acquisition and display includes image acquisition,I2C configuration,image format conversion,preprocessing,SDRAM storage,and VGA display module.Video capture and display unit to achieve I2C configuration camera real-time acquisition of image information sent to the FPGA,in the FPGA to achieve image gray,filter preprocessing,SDRAM storage and VGA display.The moving object detection unit sets its controller according to the SDRAM storage structure,makes the adjacent two images in the video stream make the difference,and the difference result is the binary image,that is,the moving object,which is obtained by the threshold judgment,and is displayed on the VGA display.On the basis of realizing the video acquisition and display,the algorithm is used to compare the inter-frame difference method as the algorithm to realize the function of the system,and the design of the module is carried out.The whole system realizes the camera to acquire the video in real time,and displays the result of the motion target detection after image processing.After testing,the system can achieve in the ordinary indoor environment can quickly identify the moving target,for the next step in the identification,analysis and other follow-up work to enhance effectiveness.