Well-Posed Inhomogeneous Nonlinear Diffusion Scheme for Digital Image Denoising

Figure 2

Canny edge detector-based indicator function. (a) Canny binary output 𝐶(𝑥). (b) Smooth edge indicator function 𝐸(𝑥) with 𝜌=2 creates a band around 𝐶(𝑥) (c) Diffusion weight 𝛼𝑔(|∇𝑢|).

(a)

(b)

(c)