Image Sharpening and Denoising Method Based on Anisotropic Diffusion Model.

We present an anisotropic diffusion model which can sharpen edge of image. This model combines the advantages of degenerative diffusion model and reverse thermal diffusion model. The model can remove the image noise together with sharpening the edge of the image. It also prevents the blurring effect on the degenerate diffusion model for the points with big gray level variations; and compared with reverse thermal diffusion modeit overcomes the disadvantage of false edge's appearance. The experimental result shows that our anisotropic diffusion model can greatly remove the noise and has the good stability. The PSNR of my model is nearly 1.0dB than other methods in strong noise.