In this paper, we discuss Laplacian smoothing and modified methods, mean curvature flow, PDE method and the smoothing method based on directions.
在文中，分别讨论了拉普拉斯平滑及其改进算法、平均曲率流、PDE方法及基于方向的平滑算法。
Based on the classical algorithm, we discuss a PDE method to denoise and enhance the images, which has a better visual effect than classical methods.
本文在传统算法的基础上，探讨了对图像进行去噪、增强处理的偏微分方程方法，并力求算法较传统算法在图像的视觉效果方面有一定程度的提高。
Based on the classical algorithm, we discuss a PDE method to denoise and enhance the images, which has a better visual effect than classical methods.
本文在传统算法的基础上，探讨了对图像进行去噪、增强处理的偏微分方程方法，并力求算法较传统算法在图像的视觉效果方面有一定程度的提高。
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