Hierarchical Block Truncation Of Digital Hdtv Images
' 1 ABSTRACT L/ In this pap6 source coding technique is presented for compressing HDdgital images for B-ISDN visual services. The proposed source coding technique is called Hierarchicat JIock*Truncation Coding (HBTC). It is a combination of the Block Truncation Coding technique and a Quadtree segmenta%on method. The quadtree segmentation is used to decompose an image into homogeneous regions so that the BTC method can exploit the non-stationarity of the image dsta. Bit rates around /pixel achieved with this method. \ ri