Estimating exposure and noise of space target image with bidirectional reflectance distribution function

Xinlong Liu; Hongwei Yi; Ying Cheng

doi:10.1117/12.2503090

9 August 2018 Estimating exposure and noise of space target image with bidirectional reflectance distribution function

Xinlong Liu, Hongwei Yi, Ying Cheng

Proceedings Volume 10806, Tenth International Conference on Digital Image Processing (ICDIP 2018); 108064G (2018) https://doi.org/10.1117/12.2503090
Event: Tenth International Conference on Digital Image Processing (ICDIP 2018), 2018, Shanghai, China

Abstract

A modeling method is proposed for the visible light scattering characteristics of space objects, and a bidirectional reflection distribution function is introduced based on the radiation theory, using a material micro-surface based on Davies model. The visible light scattering characteristics of a spatial target are studied by the model. The different material irradiance of space target is simulated respectively, and the specific camera parameters are combined: 1. To analyze the range of gray values after space target imaging for different exposure times, 2. To calculates the possible signal-to-noise ratio of the image by calculating the noise of the camera imaging. At last, the suitable exposure time can be determined by the extremum of gray value, which can avoid the occurrence of excessive exposure or the analysis and evaluation of the quality of space visible light imaging combined with the noise.

Citation Download Citation

Xinlong Liu, Hongwei Yi, and Ying Cheng "Estimating exposure and noise of space target image with bidirectional reflectance distribution function", Proc. SPIE 10806, Tenth International Conference on Digital Image Processing (ICDIP 2018), 108064G (9 August 2018); https://doi.org/10.1117/12.2503090

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KEYWORDS

Cameras

Signal to noise ratio

Bidirectional reflectance transmission function

Reflectivity

Solar radiation models

Visible radiation

Light scattering

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