Zhang Ying, Zhao Hui-jie, Cheng Xuan, Xiong Sheng-jun
Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, School of Instrumentation Science & Opto-Electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2011 May;31(5):1375-8.
A new full-polarized multi-spectral imaging system is described, which uses electronically controlled LCVR (liquid crystal variable retarder) to modulate the full-polarized state of light in the visible to IR range. The system consisted of optical lenses, LCVRs, filters and CCD. Firstly, the system structure, working theory and optical design are introduced in the present paper. A polarization calibration method is provided and the calibration system was set up, which realized high-precision polarization calibration using a small polarized source. Then, a field experiment with the imaging system was carried out. Polarized spectral images with higher spectral and spatial resolution were collected. Finally, the data acquired were rough processed to get polarization degree image of the targets. It is concluded that the experiment has proved that the imaging system is effective in obtaining full-polarized and multi- spectral data. The image captured by the system can be applied to object identification and object classification.
介绍了一种新型全偏振多光谱成像系统，该系统使用电控液晶可变延迟器（LCVR）在可见光到红外范围内调制光的全偏振状态。该系统由光学透镜、LCVR、滤光片和电荷耦合器件（CCD）组成。本文首先介绍了系统结构、工作原理和光学设计。提出了一种偏振校准方法并搭建了校准系统，该校准系统使用小偏振源实现了高精度偏振校准。然后，对成像系统进行了野外实验。采集到了具有更高光谱和空间分辨率的偏振光谱图像。最后，对采集到的数据进行粗处理以获得目标的偏振度图像。得出的结论是，实验证明该成像系统在获取全偏振和多光谱数据方面是有效的。该系统捕获的图像可应用于目标识别和目标分类。
