Research on the linear responsivity of TDICCD camera in visible light

Rongna Ran; Jun Dai; Xingming Chen; Xiang Chen; Kejia Wu; Sai Du

doi:10.1117/12.2580028

5 November 2020 Research on the linear responsivity of TDICCD camera in visible light

Rongna Ran, Jun Dai, Xingming Chen, Xiang Chen, Kejia Wu, Sai Du

Proceedings Volume 11567, AOPC 2020: Optical Sensing and Imaging Technology; 115672Y (2020) https://doi.org/10.1117/12.2580028
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

The imaging principle and radiometric calibration principle of long linear array TDICCD cameras are analyzed. Calibration work is carried out using the integrating sphere and collimator while developing a more comprehensive radiometric calibration scheme. The study used quantitative analysis to gain insights into the linear responsivity of input radiance, integral time, integral series, and gain to the camera. The least-square method is chosen to fit the experimental data to obtain the corresponding linear regression equation. The correlation coefficient is above 0.99. The results show that the radiation response of TDICCD camera is excellent when other dimming parameters remain constant; the gray value of the image changes linearly with the input radiance value. Fixing the input radiance, the gray value of the image varies linearly with the gain, integral series, or integral time. The results of this research support the study of the automatic dimming of TDICCD camera.

Citation Download Citation

Rongna Ran, Jun Dai, Xingming Chen, Xiang Chen, Kejia Wu, and Sai Du "Research on the linear responsivity of TDICCD camera in visible light", Proc. SPIE 11567, AOPC 2020: Optical Sensing and Imaging Technology, 115672Y (5 November 2020); https://doi.org/10.1117/12.2580028

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