The effectiveness of this method can be proved by using the fourth-order nonlinear diffusion of image de-noising experiment which is based on this method.
并通过基于该方法的四阶非线性扩散的图像去噪实验，结果表明了该方法的有效性。
Partial differential diffusion equation is used to remove the noise of medical ultrasonic image.
研究了偏微分扩散方程在医学超声图像去噪中的应用。
To preserve image features, the nonlinear diffusion coefficients are locally adjusted according to the directional derivatives of the image.
而且为了保持图像特征，利用图像的方向导数局部地调整非线性扩散系数。
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