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专利名称：Method of encoding a sequence of frames发明人：Beatrice Presquet-Popescu,Vincent Bottreau申请号：US10117591申请日：20020405
公开号：US20030026339A1公开日：20030206
摘要：The invention relates to a method for encoding a sequence of frames by meansof a three-dimensional (3D) subband decomposition involving a filtering step applied tothe frames considered as a 3D volume. The decomposition is applied to successivegroups of frames after the implementation, on the frames of each group, of motionestimation and compensation operations in the low frequency temporal subbands ateach level of the temporal decomposition, the compensation operation leading, amongthe filtered pixels, to double-connected pixels corresponding in the current frame toregions of the reference frame becoming uncovered during motion. According to theinvention, the identification step of double-connected pixels is followed by a decisionstep based on a minimization criterion and provided for choosing in the current frame, forthe temporal filtering of a double-connected pixel of the reference frame, the pixel thatleads to a minimum energy of the detail subband. Moreover, when the temporal part ofthe 3D decomposition is a temporal wavelet transform that includes a temporal filteringbased on the lifting scheme, said temporal filtering includes an overlapped motioncompensation using in the prediction step of said scheme an average of pixels fromadjacent windows in the reference frame.
申请人：PRESQUET-POPESCU BEATRICE,BOTTREAU VINCENT
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