First I present a comparison of Noise removal Filters

Filtering Comparison

The following images compare the results of filtering using 3 different noise removal filters:-

  1. AnisoTropic Diffusion
  2. Median Filtering
  3. Gaussian Filter
The original image and image after adding 0.01 sigma gaussian noise are as shown below:
Original Image After adding Gaussian Noise (0.01 sigma)
Anisotropic Diffusion (100 iteration 1.1 conductance)
Median Filtering (Window Size 5)
Gaussian Filtering (sigma 1.5)
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