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Proceedings Paper

Towards fusion technique for astronomical images with high dynamic range
Author(s): Lin Du; Huayan Sun; Zhaofei Hou; Yingying Qi
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Paper Abstract

Astronomical detection always need high dynamic range image, but there are problems such as underexposure or overexposure in astronomical images taken by commercial camera, this paper proposed the technique that combine establishing the first order difference quotient curve of each pixel with data feature positioning to calculate optimal exposure value of each pixel, which achieves high dynamic range fusion. In this paper, data feature positioning method was firstly utilized to establish mathematical model to calculate optimal exposure point in the first order difference quotient curve of each pixel in the target scene. Correlate optimal exposure point and camera response function to calculate optimal brightness value of each pixel, the fused high dynamic range image will be achieved. Finally, take a series of low dynamic range images with different exposure value by commercial camera, establish mathematical model and calculate to achieve high dynamic range fusion, which verifies the fusion technique proposed in this paper can obtain high dynamic range astronomical images effectively.

Paper Details

Date Published: 6 August 2014
PDF: 6 pages
Proc. SPIE 9281, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 92812N (6 August 2014); doi: 10.1117/12.2069766
Show Author Affiliations
Lin Du, The Academy of Equipment (China)
Huayan Sun, The Academy of Equipment (China)
Zhaofei Hou, The Academy of Equipment (China)
Yingying Qi, Xi'an Satellite Control Ctr. (China)


Published in SPIE Proceedings Vol. 9281:
7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Eric Ruch; Shengyi Li, Editor(s)

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