The Research Of Displaying And Scaling Controller Circuit About Infrared Image

Display controller is one of the key parts of the infrared missile seeker for the information backend processing. In general, the resolution between the image of infrared missile seeker and monitor device is different, so display controller should be of the scaling function. To get better image effect, display controller should enhance the image effect. At the same time, this thesis should design a infrared digital camera interface module for that digital camera is based on Camera Link agreement. All three parts generate the whole infrared image display controller.This thesis first studies the design method of the present image rooming engine and then present an architecture which is suitable for the research. At the same time, it makes deeply research and simulation experiment about the zooming algorithm and enhancement algorithm of infrared image for the zooming engine. An interpolation algorithm based on the edge of image is introduced as the zooming algorithm while the average value filter algorithm and high pass filter algorithm are introduced as the image enhancing algorithm. This decision is done by researching the algorithm deeply and lots of simulation experiments.At later, this thesis researches the FPGA realization of these algorithms deeply and presents the design architecture for the module of image zooming and image enhancement. In addition, the thesis introduces the Camera Link agreement which is used by the input interface of infrared images and realizes the FPGA design later.Finally, this thesis debugs and verifies the display controller IP and shows the debug results. For the sake of universal application, it then makes some experiments on the system of the programmable chip (SoPC) based on the Microblaze microchip and shows the debug results.The experiment results shows that the display controller is of the function of image zooming and the digital images display on CRT or TFT monitor exactly. In addition, the IP module can be used for infrared image information processor with the practical application value.