Patent ID: 7139433
Filing Date: 2006-11-21
Classification: G06K,G06T

Abstract:
1. A method for compressing a compound original image which includes plural components selected from the group including text, graphics and/or photographic imagery and the like comprising analyzing the image to locate regions formed from at least a predetermined number of contiguous, like-appearing pixels, characterizing all such regions collectively as one of (a) a foreground image layer, and (b) a background image layer, characterizing remaining regions in the image as the other one of such two layers, said two characterizing steps creating a layered segmentation of the original image, and applying appropriate compression to these two segmented layers, with the compression which is applied to the layer associated with the pixel-likeness regions utilizing a topological, histogram-based, encoding algorithm, and the compression which is applied to the other layer utilizing an arbitrary-shape-wavelet transform (ASWT)-based coding algorithm in a form which employs a lifting scheme.