The Application Of Digital Holography To Anti-counterfeit

Digital holography is a newly developing display holographic technique in conjunction with computer technique, image manipulation and space light modulator technique. Because of more information being included, more complex technique and unique vision impact, it represents a well foreground in anti-counterfeit. This thesis presents a method to make an anti-counterfeit label using digital holography.The whole process includes three steps. They are image collection and processing, Fresnel hologram and rainbow hologram's making.The main job of the thesis focuses on the design of a dynamic digital image and the method how to make holograms using DSH system. Ultimately, the feasibility of its application to anti-counterfeit is validated.The thesis is composed of five parts. In the first chapter, the developing history and the characteristics of the holographic anti-counterfeit are introduced. Some basic concepts and advantages of digital holography are discussed briefly as well. Chapter 2 is the important one. The main job of this thesis, the experiment project and the basic theory are put forward in this chapter. In the third chapter, the detailed execution is expatiated, including image processing and hologram making. In the forth chapter, some problems in the experiment are discussed in detailed. Then, the feasibility of the effect is validated. In the last part, the significance of this thesis is summarized. At the same time, the foreground of the digital holography in other application field is expected.