Patent ID: 7120308

Claim:
A method for recovering missing data in a digital signal, comprising the steps of: (a) grouping data elements in at least one region in which at least some data is missing into n layers, where n is an integer greater than or equal to 1; (b) assigning an initial value to each missing data element in the at least one region and a threshold which is the standard deviation computed from the surrounding of the outer boundary of layer 1 ; and (c) for i=1 to n (c)(1) evaluating a plurality of orthogonal transforms over layer i (c)(2) thresholding selected transform coefficients using the threshold, (c)(3) performing an inverse transform operation to obtain intermediate results of layer i, and (c)(4) performing an averaging operation followed by a clipping operation on the intermediate results of layer i obtained in (c)(3) to recover layer i.