The investigation of automatic exposure under extreme light

• 作 者: W.Zefeng Y.Lei H.Jijiang Z.Zhi X.Qingsheng L.Jiawen C.Yaohong Z.Zhaohui Z.Haifeng Z.Kaisheng
• 机 构: Xi'an Institute of Optics and Precision Mechanics,China
• 出 处: 2014年光子与光学工程国际会议暨西部光子学学术会议
• 发表日期: 2014年10期
• 关键词: automatic exposure control intensity histogram weight function fuzzy logic

　　For imaging equipments,exposure is one of the crucial factors for evaluating the quality of imaging.The correct method of exposure is the key to obtain high-quality image.Traditional calculation of exposure is slow in adaptation under extreme environment.In addition,the object of imaging under extreme light usually cannot achieve suitable gray level.To obtain accurate and effective control of automatic exposure under back light and front light environment,this article divides shoot scenes into different regions,applying the method of fuzzy logic to give each region a different weight number,and finally allowing it to correctly carry out automatic exposure.This method can manage imaging under special light conditions without being affected by the position of the main object.Experiments show that this method can effectively control automatic exposure under all kinds of environments.