Need : 

Improve image quality, Enhance feature extraction, Improve classification accuracy, Facilitate change detection

Domains involved : 

Signal processing, Image processing, remote sensing 

Research staff : 

Antony Louis Piriyakumar 

Alisha Joy A

Kiran Badakambi

Outcome :

Lee Filter:

The Lee filter is a statistical filter that reduces speckle noise by modeling the radar return using local mean and variance.

Frost Filter:

This filter reduces speckle by applying exponential weighting based on the distance from the pixel of interest.

Kuan filter :

Treats speckle as multiplicative noise but transforms it into additive noise for easier processing.