Patent ID: 8374446
Filing Date: 2013-02-12
Classification: H04N

Abstract:
1. Method of encoding digital signals, where, by means of computing facilities, as well as adaptive and/or linear overlapping low-pass filters, a hierarchical pyramid is formed based on encoded data, signal differences between this pyramid's levels are calculated to be used in the course of preliminary classification of the aforesaid hierarchical pyramid, which is carried out successively, from the level of a section with the lowest spatial resolution to the level of a section with the highest spatial resolution, and the aforesaid hierarchical pyramid is finally classified with a predetermined set of resampling patterns, whereupon each section of the aforesaid hierarchical pyramid selected at the stage of preliminary classification is converted into an array of subsamples, which is achieved by means of adaptive and/or linear filters set in the resampling pattern put in line with the aforesaid section at the final classification, and the obtained array is converted into a one-dimensional data array, with information on location of obtained subsamples and resampling patterns used for obtaining thereof saved, whereupon the aforesaid array is encoded through lossy compression, and information on location of subsamples is encoded through lossless compression.