【作者】 贺金平； 阮宁娟； 何红艳； 庄绪霞；

【Author】 He Jin-ping;Ruan Ning-juan;He Hong-yan;Zhuang Xu-xia;Beijing institute of Space Mechanics&Electricity;

【机构】 北京空间机电研究所；

【摘要】 空间相机成像过程中,由于器件自身的限制导致了采集到的场景的动态范围过低,针对这一基础问题,调研了可应用于空间成像的动态范围扩展方法,现有的增加空间相机输入动态范围的方法可分为硬件扩展方式、软件扩展方式和软硬件相结合的扩展方式。进而结合动态范围在成像链路中的表现形式,分析了多次曝光方式扩展动态范围的机理,提出多次曝光方式是一种自适应的非均匀间隔量化方法。更多还原

【Abstract】 In the imaging process of the space camera,the acquired dynamic range of scenes is very low because the dynamic range of detectors is limited.In order to solve this basic problem,Themethods of extending dynamic range for space imaging application are investigated.There are currently three categories to increase the input dynamic range of the space camera:hardware extending manner,software extending manner and the manner of integrating hardware and software.Furthermore,considering the expressions of dynamic range in the imaging chain,the principle of extending dynamic range through multiple exposures is studied.And multiple exposures manner is considered as an adapted unequal quantization method.更多还原