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Method of Image Quality Improvement for Atmospheric Turbulence Degradation Sequence Based on Graph Laplacian Filter and Nonrigid Registration

机译:基于图拉普拉斯滤波和非刚性配准的大气湍流退化序列图像质量改进方法

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摘要

It is challenging to restore a clear image from an atmospheric degraded sequence. The main reason for the image degradation is geometric distortion and blurring caused by turbulence. In this paper, we present a method to eliminate geometric distortion and blur and to recover a single high-quality image from the degraded sequence images. First, we use optical flow technology to register the sequence images, thereby suppressing the geometric deformation of each frame. Next, sequence images are summed by a temporal filter to obtain a single blurred image. Then, the graph Laplacian matrix is used as the cost function to construct the regularization term. The final clear image and point spread function are obtained by iteratively solving the problem. Experiments show that the method can effectively eliminate the distortion and blur, restore the image details, and significantly improve the image quality.
机译:从大气退化的序列中恢复清晰的图像具有挑战性。图像质量下降的主要原因是湍流引起的几何变形和模糊。在本文中,我们提出了一种消除几何失真和模糊并从降级序列图像中恢复单个高质量图像的方法。首先,我们使用光流技术配准序列图像,从而抑制每个帧的几何变形。接下来,通过时间滤波器将序列图像相加以获得单个模糊图像。然后,将图拉普拉斯矩阵用作成本函数来构造正则项。最终的清晰图像和点扩展函数是通过迭代解决该问题而获得的。实验表明,该方法可以有效消除畸变和模糊,恢复图像细节,显着提高图像质量。

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  • 来源
    《Mathematical Problems in Engineering》 |2018年第9期|4970907.1-4970907.15|共15页
  • 作者

    Wu Jing; Su Xiuqin;

  • 作者单位

    Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, ShaanXi, Peoples R China;

    Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

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  • 正文语种 eng
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