Recently, the nonlinear methods, especially image segmentation methods based on PDEs have attracted more and more attentions.

近年来，非线性的方法，尤其是基于pde的图像分割方法受到人们越来越多的重视。

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Because the determining systems are a linear or nonlinear overdetermined PDEs, it is very hard to solve them completely.

由于决定方程组是超定的、线性的或非线性的偏微分方程组，完全求解它们非常困难。

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We made the following research in image denoising based on PDEs. On the solution of nonlinear partial differential equations, the check-board finite difference scheme is introduced.

本文在基于偏微分方程的图像去噪方面进行了以下的研究：就非线性扩散偏微分方程的解法，引入了跳点有限差分格式。

youdao

We made the following research in image denoising based on PDEs. On the solution of nonlinear partial differential equations, the check-board finite difference scheme is introduced.

本文在基于偏微分方程的图像去噪方面进行了以下的研究：就非线性扩散偏微分方程的解法，引入了跳点有限差分格式。

youdao