The Research Of Infrared Imagery Processing System Based On FPGA

With the development of science and technology, infrared imaging technology has a wide range of applications in the military and civilian aspects. However, because of the influence of the infrared detector and the actual environmental, the results of imaging are not ideal enough as expected, which influence its practical application. If we can add some real-time processing such as image enhancement into the electronics section, the results of the image can be improved much, and the image can be displayed on the LCD which can be easy to observe.In this paper, we design an infrared image processing system based on FPGA. The system achieves image collecting, transmission, processing and LCD displaying and so on. In the image collecting module,we design the drive signal of image pre-processing , complete conversion of the infrared image from the analog signal to digital signal. In the process of image transmission, the communication of FPGA and DSP is needed to receive the image signal, we design the IP core of the communication functions module using Verilog language, and then build a system of FPGA hardware and software which transmit the image information for devices . In order to improve the image ,resolve shortcomings of low contrast, large noise of infrared image, a self-adaptive platform histogram equalization algorithm is advanced for enhanced process. Then we need to build the hardware platform using SOPC technology, compile Nios II procedures,and complete the design of FPGA for image enhancement. The main task of LCD display module is to design the LCD controller, it can provide timing-driven work, and is finally packaged to be IP core which embedded into Nios II. It can conveniences Nios II to control the LCD.For achieving collection, transmission, processing and display of the infrared image, the system complete design of the FPGA hardware and software, research the IP core of the SRAM, LCD and otherwise controller which have universality, flexibility advantages. In the FPGA system, after image enhancement processing of adaptive histogram equalization, the images are improved significantly, such as in visual images, contrast enhancement. The results achieve the purpose of this article.