基于偏微分方程的图像去噪中差分格式的研究一篇论文，给出了图像去噪的一种基本的研究方法，很有效-Based on partial differential equations of image denoising in a differential format research papers, image denoising is given one of the basic research methods, very effective

利用有限差分和MATLAB矩阵运算直接求解二维泊松方程-Directly solving the 2D Poisson equation using finite difference and MATLAB matrix operations