A CMOS sensor automatic gain adjustment algorithm

Nuo Nan; Haian Zhou; Qi Tang; Xin Li

doi:10.1117/12.2664398

4 April 2023 A CMOS sensor automatic gain adjustment algorithm

Nuo Nan, Haian Zhou, Qi Tang, Xin Li

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126171G (2023) https://doi.org/10.1117/12.2664398
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

Aiming at the problem that the background of deep space is complex and changeable, and the exposure time of CMOS image sensor is limited, the image is overexposed or too dark, an automatic gain adjustment algorithm of CMOS sensor based on image features is proposed. Starting from the characteristics of the sensor itself, the algorithm automatically adjusts the digital gain of the CMOS sensor to adapt to the change of the incident light intensity according to the difference of the captured images, improves the dynamic range of the image, and makes up for the limited exposure time range. Through experiments on specific imaging systems, the algorithm compares the imaging effects before and after using the algorithm, and it is concluded that the algorithm is versatile and easy to implement and can achieve good imaging results in scenes with drastic changes in illumination.

Citation Download Citation

Nuo Nan, Haian Zhou, Qi Tang, and Xin Li "A CMOS sensor automatic gain adjustment algorithm", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126171G (4 April 2023); https://doi.org/10.1117/12.2664398

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