雾霾天气下可见光图像场景再现

李权合; 毕笃彦; 许悦雷; 查宇飞

doi:10.3724/SP.J.1004.2014.00744

雾霾天气下可见光图像场景再现

doi: 10.3724/SP.J.1004.2014.00744

1.
空军工程大学航空航天工程学院西安 710038

基金项目:

国家自然科学基金（61175029，61372167，61379104）资助

详细信息

作者简介:
毕笃彦空军工程大学航空航天工程学院教授.1997 年获得法国图尔大学博士学位.主要研究方向为图像处理和模式识别.E-mail：biduyan@126.com

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- 被引次数: 0
出版历程
- 收稿日期: 2012-07-04
- 修回日期: 2013-08-19
- 刊出日期: 2014-04-20

Haze Degraded Image Scene Rendition

1.
Institute of Aeronautics and Astronautics, Air Force Engineering University, Xi'an 710038

Funds:

Supported by National Natural Science Foundation of China (61175029, 61372167, 61379104)

摘要

摘要: 为了再现雾霾天气下可见光图像的清晰场景，有效抑制雾霾退化造成的对比度、清晰度下降，提出了单色大气散射模型新的求解方法. 首先，将单色大气散射模型类比Retinex模型，重新解释了大气传递图；依据大气传递图的先验知识和几点假设，建立目标函数的变分模型，将大气传递图的估计问题转化为二次规划问题. 通过带约束的归一化最速下降法获取最优解，并采用多分辨率技术加速计算；在HSI空间的亮度分量上反解单色大气散射模型，得到反射图像，并依据大气传递图自适应校正饱和度分量. 实验结果表明，新算法可有效去除雾霾，再现真实场景的对比度和清晰度，同现有去雾算法相比，本文算法取得了相似甚至更好的去雾效果.
- 图像去雾 /
- 场景再现 /
- 二次规划 /
- 大气散射模型
Abstract: In order to get a clear view of the image taken under bad weather, a novel monochrome atmospheric scattering model (MASM) is proposed, which is to restrain the decline of contrast and definition caused by haze. Firstly, the MASM is reconstructed to compare with the retinex model, and this leads to our new explanation about atmospheric transmission map. Then a variational model for atmospheric transmission map is proposed, thus the transmission map estimation problem can be formulated as a quadratic programming optimization problem. The projected normalized steepest descent method is adopted to get the optimized solution, and the multi-resolution algorithm is adopted to achieve a high computational efficiency. Finally, the reflectance image on lightness component in the HSI space in computed through solving MASM and the saturation component is adjusted according to transmission map adaptively. Experimental results yield that the proposed method could remove haze effectively and playback the realistic scene's contrast and definition, and has some advantages over some existing algorithms.
- Image defog /
- scene rendition /
- quadratic programming /
- atmospheric scattering model

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参考文献(16)

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