Image recovery using the anisotropic diffusion equation
Farah Torkamani Azar, K. E. TAIT · IEEE Transactions on Image Processing · 1996
A new approach for image recovery using the anisotropic diffusion equation is developed which is based on the first derivative of the signal in time embedded in family of images with different scales. The diffusion coefficient is determined as a function of the gradient of the signal convolved with a symmetric exponential filter. A new discrete realization is developed for the simultaneous removal of noise and preservation of edges.