Ringing artifact degradations always appear in the deconvolution of geophysical data. To address this problem, we propose a postprocessing approach to suppress ringing artifacts that uses a novel anisotropic diffusion...Ringing artifact degradations always appear in the deconvolution of geophysical data. To address this problem, we propose a postprocessing approach to suppress ringing artifacts that uses a novel anisotropic diffusion based on a stationary wavelet transform （SWT） algorithm. In this paper, we discuss the ringing artifact suppression problem and analyze the characteristics of the deconvolu- tion ringing artifact. The deconvolution data containing ringing artifacts are decomposed into different SWT sub- bands for analysis, and a new multiscale adaptive aniso- tropic filter is developed to suppress these degradations. Finally, we demonstrate the performance of the proposed method and describe the experiments in detail.展开更多
针对模糊含噪图像的恢复问题,提出了一种新的图像恢复方法﹒该方法通过将热传导型偏微分方程(PDE)和Richardson-Lucy(R-L)算法相结合,先对模糊含噪的降质图像用热传导PDE的方法进行去噪,用来提高图像的信噪比;然后在噪声减弱的情况下用...针对模糊含噪图像的恢复问题,提出了一种新的图像恢复方法﹒该方法通过将热传导型偏微分方程(PDE)和Richardson-Lucy(R-L)算法相结合,先对模糊含噪的降质图像用热传导PDE的方法进行去噪,用来提高图像的信噪比;然后在噪声减弱的情况下用R-L迭代算法恢复图像﹒实验结果表明,与传统的R-L算法和均值滤波后R-L方法相比,本文方法能抑制振铃效应的传播及图像噪声的进一步放大,且在峰值信噪比(PSNR)数值上改进1~2 d B﹒展开更多
文摘Ringing artifact degradations always appear in the deconvolution of geophysical data. To address this problem, we propose a postprocessing approach to suppress ringing artifacts that uses a novel anisotropic diffusion based on a stationary wavelet transform （SWT） algorithm. In this paper, we discuss the ringing artifact suppression problem and analyze the characteristics of the deconvolu- tion ringing artifact. The deconvolution data containing ringing artifacts are decomposed into different SWT sub- bands for analysis, and a new multiscale adaptive aniso- tropic filter is developed to suppress these degradations. Finally, we demonstrate the performance of the proposed method and describe the experiments in detail.
文摘针对模糊含噪图像的恢复问题,提出了一种新的图像恢复方法﹒该方法通过将热传导型偏微分方程(PDE)和Richardson-Lucy(R-L)算法相结合,先对模糊含噪的降质图像用热传导PDE的方法进行去噪,用来提高图像的信噪比;然后在噪声减弱的情况下用R-L迭代算法恢复图像﹒实验结果表明,与传统的R-L算法和均值滤波后R-L方法相比,本文方法能抑制振铃效应的传播及图像噪声的进一步放大,且在峰值信噪比(PSNR)数值上改进1~2 d B﹒
