Patent ID: 7164801

Claim:
A method of processing a set of transformed input data outputted by a wavelet filter bank decomposer comprising the steps of: receiving a set of transformed data input; computing a set of measures of variation corresponding to as set of selected areas of a transformed input data; selecting a subset of the set of areas of the transformed input data on the basis of the set of measures of variation; determining an ordering for the subset of the set of areas on the basis of the set of measures of variation; grouping a set of subsets of the set of transformed input data on the basis of the set of measures of spatially correlated sub-bands; and wherein the step of computing a set of measure of variation corresponding to a set of selected areas of transformed input data comprises the sub-steps of: selecting a plurality of blocks of transformed input data corresponding to the set of all sub-bands; forming norm planes of a plurality of blocks of transformed input data on the basis of the set of measures of variation.