METHOD FOR LOCALLY DECODING A BINARY TRAIN OF WAVELET COEFFICIENTS

摘要

The invention relates to a method for decoding a data stream representing an object of at least three dimensions, associated with a basic mesh consisting of a set of facets defined by a set of vertices and of a set of vertices. edges, and wavelet coefficients corresponding to local modifications of the base mesh, each indexed by a vertex of the base mesh.According to the invention, for at least some wavelet coefficients of the data stream, such a method implement the following steps: - determination of an orientation of an edge carrying the vertex indexing the wavelet coefficient, called wavelet coefficient orientation; - determination, according to the orientation, of a piece of information of localization in the basic mesh of at least one descendant of the wavelet coefficient, distinct location rules being associated with each orientation, so as to extract from the data stream at least some wavelet coefficients, each associated with location information. / P