中文说明：目前，基于偏微分方程的图像处理方法的研究，也是图像去噪的研究热点方向，并且己经取得了一定的理论和实际应用方面的成它的去噪过程为通过建立噪声图像为某非线性PDE的初始条件，然后求解这个PDE，得到在不同时刻的解，即为滤波结果。
English Description：
At present, the research of image processing method based on partial differential equation is also a hot research direction of image denoising, and has achieved some achievements in theory and practical application. Its denoising process is to establish the initial condition of noise image as a nonlinear PDE, and then solve the PDE to get the solution at different times, that is, the filtering result.