Linux-based Infrared Image Processing Technology

As the arrival of the twenty-first century, people have entered the post-PC era. At this stage, embedded technology has been rapidly developed and widely applied. As embedded system has been used in mobile terminals field, the characteristics such as low-power, high integration and the expanded capacity can be brought into play sufficiently.As an important means of discovery, detection and identification, infrared imaging technology has wide application no matter in military or business fields. However, compared with visible light, infrared image has the characteristics of low contrast, high distortion and high noise because of imaging mechanism of infrared image and its own system reasons. If use the human-computer interaction, the procession of the original infrared image must be done to improve the visual effect and make the results more appropriate for specific applications.Against this background, this paper proposes a method for infrared image process which based on embedded Linux system.This subject uses PXA270 chip which based on Intel XScale frame as embedded micro processor, chooses embedded Linux as the system and utilizes Qt and C++ to accomplish the design. In this paper, it firstly introduces the transplant technology of embedded Linux system in ARM micro-processor, which includes the design of Bootloader, the design of embedded Linux kernel and setting root file system. Then it introduces the methods of setting cross complier and setting graphic development environment, and has been achieved the things which introduced above. Then it mainly introduces the methods of the processes of static infrared images and infrared videos, which includes many infrared image enhancement algorithms, infrared video input methods and infrared video recording and playing methods. The processes of static infrared image and infrared video have been accomplished. After that, it introduces the development method of embedded graphic interface which based on Qt/Embedded, and has achieved the human-machine interaction interface. At last, the main research conclusions is summarized, and brings forward some suggestions on the further research based on this research.The introduction of embedded system in image process technology can generate new research method on the assistance of embedded system. The methods which in this paper can process and display the real time infrared data, improve the quality of the infrared image, enhance the visual effects. The research has achieved intelligently and miniaturization of the system, and has accomplished the graphical interface which is easy for users to manipulate, and has attained the anticipated target.