A New Automatic Exposure Algorithm for Astronomical Image and its FPGA Implementation
Hao Wang, Jian Zhong Cao, Zuo Feng Zhou, Yan Su, Aqi Yan · Advanced materials research · 2012
Automatic exposure control is the process of controlling the exposure time of the digital imaging system to obtain the desired image which can fit the human vision during the imaging process. A new automatic exposure algorithm for astronomical image is proposed. The pixel value weight is determined by exploring the maximum range of the image histogram. Additionally, the structure of the implementation based on FPGA and experiment results for real data are given. The experiment results show that the proposed algorithm can effectively achieve the real-time automatic exposure control.