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Proceedings Paper

A new interactive enhanced method for image with poor visibility
Author(s): Fengxia Wu; Zhangye Wang; Zhiliang Yang; Qunsheng Peng
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Paper Abstract

Images of outdoor scenes captured in bad weather usually suffer from poor contrast. The reason is that the light reflected from the scene is attenuated by heavy aerosol particles' scattering. And the attenuation increases exponentially with the distances of each scene point from the sensor. In this paper, we propose a simple method to remove weather effects using only a single image. Our algorithm has three main steps. First, based on the exponential law, we propose a new primary model for de-weathering with only one parameter which is simple and easy to manipulate and then we prove its theoretic validity. Second, we bring forward two distance fields to estimate the whole depth information in the image for two different situations. And they are computed in an interactive way. Third, to overcome the defect of a single image which lacks the exact depth information, we propose an interactive post modifying algorithm to adjust the local restoration effect finely. The modifying algorithm is based on two piecewise functions controlled by two parameters. Our algorithm is suitable not only for gray level images but also for RGB color images. Compared with other methods, our method is robust and the results are quite satisfying.

Paper Details

Date Published: 3 November 2005
PDF: 10 pages
Proc. SPIE 6044, MIPPR 2005: Image Analysis Techniques, 60441S (3 November 2005); doi: 10.1117/12.655243
Show Author Affiliations
Fengxia Wu, Zhejiang Univ. (China)
Zhangye Wang, Zhejiang Univ. (China)
Zhiliang Yang, Zhejiang Univ. (China)
Qunsheng Peng, Zhejiang Univ. (China)


Published in SPIE Proceedings Vol. 6044:
MIPPR 2005: Image Analysis Techniques
Deren Li; Hongchao Ma, Editor(s)

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