An Adaptive Boosting Algorithm for Image Denoising

Algorithm 1

Estimating the noise variance.

Input: Noisy image

Output Noise level .

Initialize Estimate the initial noise level , maximum number of iterations .

While  do

 1: ;

 2: Using Algorthm 1 in [18] to select weak textured patches .

 3: For , use Algorithm 1 in [20] to select flat patches .

 4: For all the patches in , calculate using Eq. (7).

 5: For all the patches in , calculate using Eq. (8).

 6: Calculate using Eq. (9).

End while

Return Noise level .