Patent ID: 6498866
Filing Date: 2002-12-24
Classification: H04N

Abstract:
Method for encoding at least one digital signal representing a set of data, the set of data representing at least one digital image, comprising:a set division step during which the set of data is divided into first sub-sets of data representing sub-images; and for each first sub-set of data: a step of constructing a global contractive mapping of a first type for the sub-set of data, a fixed point of which constitutes an approximation of all or part of this first sub-set, using, to do this, at least one mapping belonging to the group of mappings consisting of multidimensional mappings and non-linear mappings, and a step of determining parameters of the global contractive mapping so as to allow the use, on a second sub-set of data, of a method of successive approximations converging towards the fixed point of a second type of global contractive mapping, wherein the determined set of parameters constitutes a primary, encoded representation of the set of data represented by the at least one digital signal.