Patent ID: 7315655
Filing Date: 2008-01-01
Classification: H04N

Abstract:
1. A method of data compression, said method comprising the steps: representing said data as an array D of wavelet decomposition coefficients, creating a tree map of said coefficients formed with a root node and consequently connected nodes wherein each node except the root node is a descendant of the corresponding ancestor, creating an array Z which components corresponding to said nodes are equal to 0 if the corresponding coefficient D has positive or zero value and they are equal to 1 if coefficient D has negative value, creating a set of threshold arrays T creating an array M whereas the value of M/T creating a set of arrays B creating a V-set of vector-arrays V corresponding to those descendants of the given node which B creating data streams of V, S, B, Z components, for entropy coding procedures of said V, S, B, Z data streams.