High Density Bilateral Filter

Can remove more than 90% Impulse Noise.

% hdbf - is High density bilateral filter, which removes high density salt
% & pepper noise.
% im = input image
% sigr = range parmeter for intensity kernel
% K = length to compute window win=(2*l)+1
% n = Noise density of Salt & Pepper Noise
% out = output image
% Code developed by: Suraj Kamya
% [e-mail]

% Other used functions
% trimmf - trimmed mean filter
% fbif - free bilateral filter
% rpadd - removing padding