Patent ID: 7257273

Claim:
A method comprising: accessing at least a portion of a digital image; determining if at least said portion is blurred based on a wavelet transform blur detection process, wherein the wavelet transform blur detection process comprises: wavelet transforming at least said portion of said digital image to produce a plurality of corresponding different resolution levels, each resolution level including a plurality of bands; generating at least one edge map for each of said resolution levels; and detecting blur in at least said portion of said digital image based on said resulting edge maps by: normalizing a total edge amplitude of said edge map; E map i ( k,l )= E map i ( k,l )/max( E map i ); partitioning said edge map into edge map blocks; determining a maximal edge amplitude in each of said edge map blocks and using it to represent the respective edge map block; and using Emax i to denote a discretization result of Emap i for each of said edge map blocks.