这对主体正确曝光而言就可能会产生错误的闪光输出；
This may result in an erroneous flash power setting for getting a correct exposure of the main subject.
针对数码成像系统在大动态范围场景下存在的对主体曝光不足或曝光过度的问题，本文提出了一种新的自动曝光控制算法。
The proposed algorithm for digital imaging system ensures correct exposure to the main object of scenes with large dynamic range.
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