1. A method for encoding a sequence of frames by means of a three-dimensional (3D) subband decomposition involving a spatial
and temporal filtering step applied to the 3D spatio-temporal data which correspond to said sequence of frames considered
as a 3D volume, said decomposition being applied to successive groups of frames only after the implementation, on the frames
of each group, of block-based motion estimation and compensation operations in the low frequency temporal subbands at each
level of the temporal decomposition, and this compensation operation leading, among the filtered pixels, to double-connected
pixels corresponding in the current frame to regions of the reference frame becoming uncovered during motion, said method
further comprising a decision step based on a minimization criterion and provided for choosing in the current frame, for the
temporal filtering of a double-connected pixel of the reference frame, the pixel that leads to a minimum energy of the detail
subband, the considered energy being an average energy around said double-connected pixel in the high frequency temporal subband,
and said average energy being computed by means of a low-pass filtering operation.
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