Research And Implementation Of Digital Image Processing Card Based On DSP And FPGA

Nowadays, image real time processing technology has been widely applied into modern industry, national defence and other fields. The requirement of image real time processing technology becomes higher because of the increasing amount of image data, better real time property of the image processing system.In this dissertation, hardware of a high-speed digital signal processing platform, which mainly focused on the Tobacco Sundries Eliminating System, is studied based on DSP and FPGA technology. In the digital signal processing field, the model of DSP+FPGA is welcomed by major designer, which combines the respective advantages in DSP and FPGA and gives the optimum solution. In this system, large amount of image data are acquired with high speed from CCD camera by Camera Link Interface, preprocessed and buffered with necessity in FPGA chip, transmitted to DSP chip and processed there, then stored into PC by PCI bus.Firstly, related key technique including DSP, FPGA, Camera Link Interface, PCI bus have been studied and then appropriate chips were chosen based on the requirement of the system. Secondly,the integrated circuit schematics was drew based on practical need and hardware architectural rule, and PCB design was finally finished. Thirdly, FPGA internal module, which realized the function of high speed data acquisition, preprocess, buffer of the image data, was completed using Verilog HDL. Fourthly, according to the practical need, WinDriver was chosen as system dviver developer kits and help program the system driver. Lastly, this image processing card successfully debugged in Windows environment.