ENCODING METHOD FOR THE COMPRESSION OF A VIDEO SEQ

专利名称：ENCODING METHOD FOR THE

COMPRESSION OF A VIDEO SEQUENCE

发明人：FELTS, Boris,BENETIERE, Marion,PESQUET-POPESCU, Beatrice

申请号：EP01925555.3申请日：20010417公开号：EP1285535B1公开日：20100224

摘要：The invention relates to an encoding method for the compression of a videosequence by means of a tridimensional wavelet transform. This method is based on ahierarchical subband encoding process leading to transform coefficients constituting ahierarchical pyramid. A spatio-temporal orientation tree, in which the roots are formedwith the pixels of the approximation subband and the offspring of each of these pixels isformed with the pixels of the higher subbands, defines the spatio-temporal relationshipinside said pyramid. According to the invention, the initial subband structure of thewavelet transform is preserved, in the encoding process, by scanning the subbands in anorder that respects the parent-offspring dependencies. Moreover, flags ' off/on ' areadded to each tree coefficient view of a progressive transmission, at least one of themdescribing the state of a set of pixels and at least another one describing the state of asingle pixel.

申请人：IPG ELECTRONICS 503 LIMITED

代理机构：Talbot-Ponsonby, Clare Josephine

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