Underwater polarization image restoration based on logarithmic transformation and dark channel |
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Authors: | LIU Xue-yan ZHANG Jian-lei YIN Ya-fang YANG Yi ZHANG Chao and WU Xiong-xiong |
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Affiliation: | (School of Electronic Engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China;Xi'an Institute of Applied Optics,Xi'an 710065,China) |
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Abstract: | The visibility of the underwater image is reduced due to the backscattering and signal attenuation, especially in highly turbid media. In this paper, we propose a polarization-based underwater image restoration method using logarithmic transformation and dark channel. Logarithmic transformation is first performed while maintaining the degree of polarization of the scene to increase the details of the images. Then we calculate the backscatter value through dark channel to estimate the degree of polarization of backscatter. The restored image can be obtained by the polarimetric recovery method. The experimental results illustrate the capabilities of the proposed method. |
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