US EPA

2189270 

Journal Article 

Design of polarization imaging system based on CIS and FPGA - art. no. 662106 

Zeng Yan-an; Liu Li-gang; Yang Kun-tao; Chang Da-ding 

2008 

Unk 

Proceedings of SPIE
ISSN: 0277-786X
EISSN: 1996-756X 

PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) 

6621 

62106-62106 

WOS:000254908600004 

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. 

polarization degree; polarization angle; stokes vector; image collection