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arXiv 1902.07069cs.CV
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变分正则化透射细化图像去雾

Variational Regularized Transmission Refinement for Image Dehazing

Wuhan University of Technology(武汉理工大学);Institute of High Performance Computing, A*STAR(A*STAR高性能计算研究所)

Qiaoling Shu, Chuansheng Wu, Zhe Xiao, Ryan Wen Liu

摘要:

高质量的去雾性能高度依赖于透射图的准确估计。在这项工作中,粗估计版本首先通过加权融合两个不同的透射图,这是从前景和天空区域分别产生。然后提出了一种带有提升正则项的混合变分模型来辅助细化透射图。通过交替方向算法有效地解决了由此产生的复杂优化问题。根据精细化的透射图和大气散射模型,可以有效地获得最终的无雾图像。我们的去雾框架有能力保留重要的图像细节,同时抑制不良文物,即使是大天空区域的模糊图像。对合成图像和真实图像的实验表明,该方法在不同成像条件下与现有的去雾技术相比具有竞争力,甚至优于现有的去雾技术。

英文摘要:

High-quality dehazing performance is highly dependent upon the accurate estimation of transmission map. In this work, the coarse estimation version is first obtained by weightedly fusing two different transmission maps, which are generated from foreground and sky regions, respectively. A hybrid variational model with promoted regularization terms is then proposed to assisting in refining transmission map. The resulting complicated optimization problem is effectively solved via an alternating direction algorithm. The final haze-free image can be effectively obtained according to the refined transmission map and atmospheric scattering model. Our dehazing framework has the capacity of preserving important image details while suppressing undesirable artifacts, even for hazy images with large sky regions. Experiments on both synthetic and realistic images have illustrated that the proposed method is competitive with or even outperforms the state-of-the-art dehazing techniques under different imaging conditions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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