DESIGN OF A TOOL FOR IMPROVING EFFICIENCY OF SPECKLE NOISE FROM IMAGES – A REVIEW

ABSTRACT

A computerized image is a bidimensional image with a limited set of digital values, called pixels (or picture elements). Because of certain elements such as the system's physical attributes, picture capturing instruments etc, noise gets developed in the images. There are various sorts of noise, out of which speckle noise – a type of multiplicative noise, is very hard to extract and remove. Many devices to draw out speckled noise from pictures have been made. To de-speckle the picture, several factors are considered that show the aggregate of speckled noise removed from the picture. This paper discusses speckle noise, methods used to de-speckle a digital image and the defects in de-speckling models which lead to problem formulation.