西安电子科技大学学报 ›› 2016, Vol. 43 ›› Issue (2): 95-101.doi: 10.3969/j.issn.1001-2400.2016.02.017

• 研究论文 • 上一篇    下一篇

偏振透雾成像系统的设计与实验分析

夏璞1,2;刘学斌1;闫鹏1   

  1. (1.中国科学院西安光学精密机械研究所 中国科学院光谱成像技术重点实验室,陕西 西安  710119;
    2. 中国科学院大学,北京  100049)
  • 收稿日期:2014-12-20 出版日期:2016-04-20 发布日期:2016-05-27
  • 通讯作者: 夏璞
  • 作者简介:夏璞(1989-),男,中国科学院西安光学精密机械研究所博士研究生,E-mail:xiapu@opt.ac.cn.
  • 基金资助:

    国家高技术研究发展计划(863计划)资助项目(20137031071B);国家自然科学基金资助项目(61275149)

Design of and experiment on the polarization dehazing imaging system

XIA Pu1,2;LIU Xuebin1;YAN Peng1   

  1. (1. Key Laboratory of Spectral Imaging Technology, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an  710119, China;
    2. University of Chinese Academy of Sciences, Beijing  100049, China)
  • Received:2014-12-20 Online:2016-04-20 Published:2016-05-27
  • Contact: XIA Pu

摘要:

针对尘雾天气下对成像质量、集成度和实时性的要求,设计了一种可进行快速去雾处理的偏振成像系统.利用现场可编程门阵列实现差分电平转换,结合探测器内置锁相环路和CamLink图像传输协议搭建高集成度CMOS成像电路;利用斯托克斯方程对获得的偏振图像进行反演,通过数字信号处理器模块实现了实时去雾算法.该偏振成像系统尺寸为117mm×117mm×126mm,质量为1.2kg.在尘雾天气下进行成像实验,通过对比去雾前后图像直方图和RGB分布,表明该成像系统能有效地对大气散射进行校正,验证了该成像系统的透雾能力.实验结果表明,该成像系统在2048×2048及180Hz下可获得稳定的彩色去雾图像.

关键词: 去雾, 偏振测量, CMOS, 现场可编程门阵列, 数字信号处理器

Abstract:

In view of the requirement of image quality, integration level and real-time application of the imaging systems under fog weather, this paper reports a polarization imaging system with a dehazing ability. The differential signal is converted by FPGA, and a highly integrated CMOS imaging circuit is built based on the internal PLL of the image sensor and the CamLink protocol. The obtained image is inversed by stokes equations, and the real-time dehazing algorithm is realized by the built-in DSP module. The total size of the polarization imaging system is 117mm×117mm×126mm, and the weight of the system is 1.2kg. An imaging experiment was made under fog weather, and the dehazing ability of the imaging system is proved by the contrast of the original image and the dehazed image's histogram and RGB distribution. Experimental results show that the imaging system can stably obtain a color dehazed image at 2048×2048@180Hz.

Key words: fog dispersal, polarization measurements, complementary metal oxide semiconductor, field programmable gata array, digital signal processor

中图分类号: 

  • TP212