New derivative filters in Perona-Malik equation for image denoising

Based on high order finite difference formula for approximating differentiation,four new filters are proposed to discretize anisotropic diffusion equation to use in imagedenoising. The new results are implemented for removing Gaussian noise and different resultsare compared with MSE, PSNR and SSIM indexes. The results reveal the effectiveness of thenew discretization approaches.

کلیدواژه ها:

Digital images ، Gaussian noise ، Anisotropic diffusion ، High order finite difference