Study Of Image Processing Technology Of Ucooled Infrared Thermal Imaging

The infrared thermal imaging system plays important action in military and civilian affairs.Depending on lower cost,higher dependability,smaller bulk and lower dissipation,the uncooled infrared thermal imaging system holds important position in infrared fields.The uncooled infrared thermal imaging system includes infrared optics,uncooled infrared focal plane array(IRFPA), temperature stabilizer and drive circuit of IRFPA,image signal processor, video synthesis and display drive circuit.In this paper,real-time uncooled infrared thermal imaging system was designed under basic system theory analysing and infrared image processing algorithms discussing.Well processing effect was obtained.Theory analysis is the base of developing uncooled infrared thermal system. In this paper,imaging principle,microbolometer performance,factors affecting system performance,and image processe algorithms were studied.To meet the goal of image algorithm,we designed the hardware of uncooled infrared imaging system,which include AD data acquire module,image processing module and video synthesize module.To insure the quality of image, we take the signal integrity analyze into PCB design consideration.Image processing module is composed of FPGA and DSP.Taking the advantage of the strong data processing ability of FPGA,we achieve real time image processing with FPGA,including nonuniformity correction and image quality enhancement.Now the image processing system has already run correctly,which can output the processed image to the monitor,which meet the design goal.