A New Anisotropic Diffusion Equation with Adaptive Fidelity Term

When denoising with the method of Weickert´s anisotropic diffusion equation, textures and details will be compromised during the process, so a fidelity term is added into the equation. The coefficient of fidelity term will vary adaptively with the content of position, which makes that the diffusion term and the fidelity term come to a better compromise. Otherwise, in order to realize the fact that different type of diffusion can be used in different position, the two eigenvalues are reset by combining edge-enhancing model and coherence- enhancing model. Experiment results show that the new method has obvious effect in preserving textures and details.