Multiple Description Image Coding using Pre-and Post-Processing

We address the problem of robust transmission of compressed visual information over unreliable networks. Our approach employs the principle of multiple-descriptions, through pre-and post-processing of the image data, without modification to the source or channel codecs. We employ oversampling to add redundancy to the original image data followed by a partitioning of the oversampled image into “equal” sub-images which can be coded and …