A Design Of Wide Field Target Detection System Based On High Definition CMOS

In order to adapt to the increasingly complex battlefield environment,in the new generation of photoelectric reconnaissance and alarm system,high resolution and high precision cameras can be equipped to achieve rapid acquisition and processing of targets in large field of view.The optical imaging system based on CMOS imaging technology can meet the requirement of the system because of its high precision,stable state,strong anti-interference ability,high resolution and low cost.This paper designed a large field target detection system based on high definition CMOS camera to inspect moving objects in a wide field of view.The system has the characteristics of high speed,low power consumption and miniaturization,and it can be programmed flexibly and easy to upgrade and maintain.In this paper,the functional requirements of the system are analyzed from four aspects: data acquisition,result output,data flow control and algorithm performance,and the hardware framework of the system is determined according to the practical application scene and detection target characteristic.Based on the analysis of the common target detection algorithm,this paper proposes a multi-clustering target detection algorithm based on interframe difference.The algorithm is based on the decision of the target moving speed and the size of the imaging in the image to achieve the detection of a specific kind of target.Through multiple clustering can effectively solve the interframe difference caused by the overlap problem and the second decision problem.he algorithm has clear processing flow and low algorithm complexity.It can be used in the FPGA+DSP platform designed in this paper.In this paper,a hardware implementation system is designed to implement the proposed target detection algorithm.First of all,on the basis of analyzing the function of the hardware system,the selection and function of the main function chip are given.Secondly,the software implementation of the system,algorithm and other system functions is discussed.Finally,the algorithm transplantation based on FPGA+DSP platform and the software implementation of each function in the system are described in detail.