As polarization is an important characteristic of light, polarization image detecting is a new image detecting
technology of combining polarimetric and image processing technology. Contrasting traditional image detecting in ray
radiation, polarization image detecting could acquire a lot of very important information which traditional image
detecting couldn't. Polarization image detecting will be widely used in civilian field and military field. As polarization
image detecting could resolve some problem which couldn't be resolved by traditional image detecting, it has been
researched widely around the world. The paper introduces polarization image detecting in physical theory at first, then
especially introduces image collecting and polarization image process based on CIS (CMOS image sensor) and FPGA.
There are two parts including hardware and software for polarization imaging system. The part of hardware include
drive module of CMOS image sensor, VGA display module, SRAM access module and the real-time image data
collecting system based on FPGA. The circuit diagram and PCB was designed. Stokes vector and polarization angle
computing method are analyzed in the part of software. The float multiply of Stokes vector is optimized into just shift
and addition operation. The result of the experiment shows that real time image collecting system could collect and
display image data from CMOS image sensor in real-time.
Analyze the virtue and disadvantage of the present digital copyright protecting system, design a kind of security protocol model of digital copyright protection, which equilibrium consider the digital media’s use validity, integrality, security of transmission, and trade equity, make a detailed formalize description to the protocol model, analyze the relationship of the entities involved in the digital work copyright protection. The analysis of the security and capability of the protocol model shows that the model is good at security and practicability.