Context-adaptive anisotropic diffusion for image denoising

To mitigate smoothing of image features in anisotropic diffusion filtering, a novel scheme called context-adaptive anisotropic diffusion is proposed for image denoising via a weighted diffusivity function, which encodes the impact of contextual discontinuities and can adaptively control the smoothing speed for improving the capability of feature preservation along with noise removal. Experimental results validate the effectiveness of the proposed method.