Image selective smoothing and edge detection by nonlinear diffusion
SIAM Journal on Numerical Analysis
Degradation of turbid images based on the adaptive logarithmic algorithm
Computers & Mathematics with Applications
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By substituting an anisotropic diffusion operator for the isotropic Laplace operator in the directed diffusion equation, adding two different coefficients in the two diffusion terms, and choosing the image denoised by soft wavelet shrinkage as the initial approximate image, an improved directed diffusion equation model is proposed. Experiments show that the new model can solve the problem that edges and details will be rapidly blurred during the diffusion process in the directed diffusion equation.