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Rate-Distortion Based Video Compression - Optimal Video Frame Compression and Object Boundary Encoding (Paperback, Softcover reprint of hardcover 1st ed. 1997)
Loot Price: R4,259
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Rate-Distortion Based Video Compression - Optimal Video Frame Compression and Object Boundary Encoding (Paperback, Softcover reprint of hardcover 1st ed. 1997)
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One of the most intriguing problems in video processing is the
removal of the redundancy or the compression of a video signal.
There are a large number of applications which depend on video
compression. Data compression represents the enabling technology
behind the multimedia and digital television revolution. In motion
compensated lossy video compression the original video sequence is
first split into three new sources of information, segmentation,
motion and residual error. These three information sources are then
quantized, leading to a reduced rate for their representation but
also to a distorted reconstructed video sequence. After the
decomposition of the original source into segmentation, mo tion and
residual error information is decided, the key remaining problem is
the allocation of the available bits into these three sources of
information. In this monograph a theory is developed which provides
a solution to this fundamental bit allocation problem. It can be
applied to all quad-tree-based motion com pensated video coders
which use a first order differential pulse code modulation (DPCM)
scheme for the encoding of the displacement vector field (DVF) and
a block-based transform scheme for the encoding of the displaced
frame differ ence (DFD). An optimal motion estimator which results
in the smallest DFD energy for a given bit rate for the encoding of
the DVF is also a result of this theory. Such a motion estimator is
used to formulate a motion compensated interpolation scheme which
incorporates a global smoothness constraint for the DVF."
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