Fringe Method Of High-resolution Imaging Technology

Just with small imaging lens aperture, high-resolution can be achieved by using fringe high-resolution imaging technology,so the high cost that needed to improve the resolution by using large size optical lens aperture is saved. By using synthetic-aperture technology, precisely adjusting phase structure and aborative design of surface shape control is required for keeping subsystem in phase synchronization with each other. With image superresolution technology, false information usually interfuses the actual information and affects the reliability of image quality. Fringe imaging technology can overcome above mentioned shortcomings. High-resolution imaging technology is widely used in remote sensing, medical treatment, industry, public security and traffic area etc. Especially in military area, high-resolution images can improve the identification of military targets and contribute to improve early warning capacities. High-resolution imaging technology has been paid more and more attention in various fields.A fringe imaging technology based on spectrum modification is described. Interference fringes shift target spectrum information. Then more high frequency information can pass through the imaging system and high-resolution has been obtained in turn.The main contributions of this dissertation are listed as follows:1. Theoretical fundamental of fringe imaging technique (including one-dimensional and two-dimensional fringe imaging technique) was given. Theory analysis proved that this technique could improve one-dimensional resolution and two-dimensional resolution of the target. The approach to obtain high-resolution image was given.2. The computer simulated experimental results were given. The results showed that the proposed fringe imaging technology could improve the quality of imaging dramatically. The conclusion that imaging technology could evidently improve one-dimensional and two-dimensional resolution was proved by these experimental results. 3. A primary real experimental system was constructed. Some real experiments were done to test the efficiency of two-dimensional image resolution. The experimental results indicated that spectrum shifting could be achieved by moving multiple- fringe, then more target spectrum were obtained. So fringe technology could improve target's two-dimensional resolution.