摘要
编码曝光方法是基于扩频技术的思想,通过对快门的编码将传统的快门频谱扩展到更宽的频带上,保留更多图像的频域信息,方便图像信号的恢复。提出了一种基于光纤陀螺振动探测和编码曝光的颤振模糊图像复原方法,介绍了编码曝光和颤振探测的基本理论,实现最优编码码字的选取。利用光纤陀螺进行颤振轨迹探测,并使用统计的方法估计点扩展函数(PSF),将复杂的几何计算问题转化为简单的统计问题,降低运算复杂度,提高运算速度。提出的方法主要用于复原由卫星平台颤振引起的遥感成像模糊,实验结果表明,该方法能够实现快速的复原,对于快速获得高分辨率遥感图像具有重要意义。
Coded exposure （CE） is based on technology of spread spectrum. By advantage of CE, imaging restoration can be used by method of inverse filtering. A method of fast restoration of blurred vibration image based on CE is introduced, as well as basic theory of coded exposure and vibration detection, to achieve the best code. The vibration path is detected by using fiber-optic gyroscope, and point spread function （PSF） is estimated by means of statistic, which can reduce algorithm complexity, and improve operating rate. The method put forward aims at remotely- sensed blurred image, which is blurred due to vibration of satellite platform. Experimental results indicate that this method has absolute advantage in processing speed and image restoration result, and it is significant for getting high resolution remote sensing images fast.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2014年第9期102-109,共8页
Acta Optica Sinica
基金
国家自然科学基金(61475135)
关键词
图像处理
快速复原
编码曝光
颤振探测
点扩展函数估计
image processing
fast restoration
coded exposure
vibration detection
point spread functionestimation
