An analysis of a block matching method on different bands of monochrome images

Abstract

In the imaging areas of medical and microwave regions, a speckle noise is generally added in acquisition process of images. This type of unnecessary signals or noises is available in all coherent imaging systems. De-speckling methods are used to de-speckle the available speckle noise from these speckled systems. In optical image formation, other noises are added like gaussian, salt and pepper, etc. An un-decimated block matching 3D (UD-BM3D) method is a state of art technique in de-speckling area to remove the noise at the fullest extent. In this paper, an analysis has been done on optical or satellite images with un-decimated BM3D method. As it is known that an optical is of different bands, it is experimented on main colour bands (Red, Blue & Green). Different quality parameters for different bands are evaluated and compared for different speckle noise variances by considering the Sentinel satellite image sub bands as single band image.