Retinal Image Denoising via Bilateral Filter with a Spatial Kernel of Optimally Oriented Line Spread Function

Algorithm 1

Bilateral filter with a spatial kernel of optimally oriented line spread function.

Input: image , kernel size , scale parameters ,

Calculate the multi-scale oriented Gaussian like kernels mentioned in Section 4.1.1 using Eq. (8)

  for each: image pixel do

 Compute the best matching kernel from the Gaussian like kernels using Eq. (9),

   record the index of the best matching orientation and scale

  end for

  for each: image pixel do

 for each: neighboring image pixel do

  Compute weight of spatial kernel using Eq. (11);

  Compute weight of range kernel using the conventional method in BLF

 end for

 Compute the filtered image pixel using Eq. (7)

  end for

Output: result image