基于改进暗通道先验的太阳耀斑图像去云研究
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摘要
在太阳耀斑图像去云研究中,基本的暗通道先验方法存在不良效应,且其透射率优化算法过于复杂,占用空间较大。本文采用双边滤波算法对原始透射率的算法进行优化。根据标准差、熵与平均梯度这三个误差参数,将改进算法与原始的暗通道先验算法进行对比。结果显示,改进后的暗通道先验算法在太阳耀斑图像的去云方面有更好的效果。
In the study of removing cloud from solar flare images, the classic dark channel prior method has adverse effects, and its transmittance optimization algorithm is too complicated and takes up a lot of space. This paper uses a bilateral filtering algorithm to optimize the original transmittance algorithm. According to the three error parameters of standard deviation, entropy and average gradient, the improved algorithm is compared with the original dark channel prior algorithm. It is concluded that the improved dark channel prior algorithm has a better effect on the cloud removing of solar flare images.
In the study of removing cloud from solar flare images, the classic dark channel prior method has adverse effects, and its transmittance optimization algorithm is too complicated and takes up a lot of space. This paper uses a bilateral filtering algorithm to optimize the original transmittance algorithm. According to the three error parameters of standard deviation, entropy and average gradient, the improved algorithm is compared with the original dark channel prior algorithm. It is concluded that the improved dark channel prior algorithm has a better effect on the cloud removing of solar flare images.
引文
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[7]杨燕,李一菲,岳辉.一种自适应的多级透射率估计去雾算法[J/OL].光子学报:1-10[2019-01-29].
[8]李彬,卢士庆,孙小龙,高健,孟翔晨,赵悦晨,吕迪波.可见光波段灰度熵和热红外亮温差的沙尘遥感判识[J].遥感学报,2018,22(04):647-657.
[9]赵俊强,徐永涛,陈继超.基于Shearlet变换结合动态融合的遥感图像融合算法[J].电子测量与仪器学报,2018,32(11):35-42.
[2] Kaiming He, Jian Sun and Xiaoou Tang,"Single image haze removal using dark channel prior,"2009 IEEE Conference on Computer Vision and Pattern Recognition, Miami, FL, 2009, pp.1956-1963.
[3]邵美云,常岐海.基于软抠图指导性滤波的雾天图像复原技术[J].科技通报,2015,31(10):109-111.
[4]冯昕晨,穆平安.基于暗通道先验的图像去雾改进[J/OL].软件导刊:1-4[2018-12-28].
[5]南栋,毕笃彦,马时平,娄小龙,倪嘉成.一种基于参数估计的自适应双边滤波算法[J].中南大学学报(自然科学版),2014,45(11):3840-3845.
[6]李娟.基于局部均值和标准差的图像去雾算法研究[D].河北师范大学,2015.
[7]杨燕,李一菲,岳辉.一种自适应的多级透射率估计去雾算法[J/OL].光子学报:1-10[2019-01-29].
[8]李彬,卢士庆,孙小龙,高健,孟翔晨,赵悦晨,吕迪波.可见光波段灰度熵和热红外亮温差的沙尘遥感判识[J].遥感学报,2018,22(04):647-657.
[9]赵俊强,徐永涛,陈继超.基于Shearlet变换结合动态融合的遥感图像融合算法[J].电子测量与仪器学报,2018,32(11):35-42.