New Method of Define Parameter in Denoising Model
Song Guo-xiang · Modern Electronics Technique · 2008
This paper takes the example of total variation denoising model to propose a newly-selected parameter method when solving the corresponding Euler equation by the gradient method in denoising image,and realizes the mean and the variance estimate formula simultaneously by adopting this method.While ones solve PDE,ones do not select the noise image but the reconstructed image as the initial value,under the wavelet decomposition of noise image,keeping the low frequency coefficients and only setting up a threshold for high frequency coefficients.With the newly-selected initial value,PDE is solved by the finite difference iteration and the equation is simulated numerically.The experiment results show that this method has a better denoising effect.