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Proceedings Paper

Quality evaluation of adaptive optical image based on DCT and Rényi entropy
Author(s): Yuannan Xu; Junwei Li; Jing Wang; Rong Deng; Yanbing Dong
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Paper Abstract

The adaptive optical telescopes play a more and more important role in the detection system on the ground, and the adaptive optical images are so many that we need find a suitable method of quality evaluation to choose good quality images automatically in order to save human power. It is well known that the adaptive optical images are no-reference images. In this paper, a new logarithmic evaluation method based on the use of the discrete cosine transform(DCT) and Rényi entropy for the adaptive optical images is proposed. Through the DCT using one or two dimension window, the statistical property of Rényi entropy for images is studied. The different directional Rényi entropy maps of an input image containing different information content are obtained. The mean values of different directional Rényi entropy maps are calculated. For image quality evaluation, the different directional Rényi entropy and its standard deviation corresponding to region of interest is selected as an indicator for the anisotropy of the images. The standard deviation of different directional Rényi entropy is obtained as the quality evaluation value for adaptive optical image. Experimental results show the proposed method that the sorting quality matches well with the visual inspection.

Paper Details

Date Published: 13 April 2015
PDF: 6 pages
Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95222Z (13 April 2015); doi: 10.1117/12.2182768
Show Author Affiliations
Yuannan Xu, Science and Technology on Optical Radiation Lab. (China)
Junwei Li, Science and Technology on Optical Radiation Lab. (China)
Jing Wang, Science and Technology on Optical Radiation Lab. (China)
Rong Deng, Science and Technology on Optical Radiation Lab. (China)
Yanbing Dong, Science and Technology on Optical Radiation Lab. (China)


Published in SPIE Proceedings Vol. 9522:
Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II
Xiangwan Du; Jennifer Liu; Dianyuan Fan; Jialing Le; Yueguang Lv; Jianquan Yao; Weimin Bao; Lijun Wang, Editor(s)

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