The elements of a gray scale image have a maximum value of 255 and hence can be represented in binary domain using 8 bits Higher order Bit planes of an image carry a significant amount of visually relevant details
A'tages:
removes impulse noise
Preserves edges
Disa'tages:
Performance poor when percentage of noise pixels in the window is greater than 50% in the window
Performs poorly with Gaussian noise
3*3 window
Procedure to find median value
Initial order r=5
Select rth bit in the MSB plane