The Design Of The Real-time Face Detection System Based On FPGA

Since the21st century, with the increase in need, face recognition technology has become a hot research topic.Directness,convenience,non-invasive and friendship are unique advantages of face recognition,a way of identity authentication that people most likely accept.As an important part of face recognition system,face detection has got more and more attention of research scholars.With in-depth study and expansion of application,in addition to application in face recognition,face detection also has important application prospect in fields of access control,video conferencing,image retrieval and intelligent human-computer interaction, etc.Therefore, face detection has gradually developed into a special research direction.In this paper, the design of real-time face detection system was based on FPGA.In hardware, the real-time face detection system used Altera’s Cyclone II FPGA family EP2C70F896C6chip as the main controller.Hardware part separately designed the core board and the back board,convenient to reduce development costs and shorten the development cycle.The core board was the minimum system to ensure that the system ran normally,and gived full consideration to the signal integrity issues. Some improvements were designed to keep signal integrity.Taking into account the possibility of future expansion of functions,the back board mainly designed communication module,memory module, audio module,input and output module, USB module,VGA module, camera module and display module.The real-time face detection system designed in this paper used the software Quartus Ⅱ11.0as the software platform.The software Quartus Ⅱ11.0could realize verilog design entry for programming, design synthesis, simulation, testing and configuration of programmable logic devices.Software modules included skin detection algorithm module, median filtering algorithm module and morphological filtering algorithm module.Through experimental testing of software and hardware platforms,the real-time face detection system initially realized the basic functions,namely,instantly detecting images that existed faces and displaying face field.