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TCSV
2002

Rate-constrained multihypothesis prediction for motion-compensated video compression

8 years 8 months ago
Rate-constrained multihypothesis prediction for motion-compensated video compression
Abstract-- This article investigates linearly combined motion-compensated signals for video compression. In particular, we discuss multiple motion-compensated signals that are jointly estimated for efficient prediction and video coding. First, we extend the wide-sense stationary theory of motion-compensated prediction for the case of jointly estimated prediction signals. Our theory suggests that the gain by multihypothesis motion-compensated prediction is limited and that two jointly estimated hypotheses provide a major portion of this achievable gain. In addition, the analysis reveals a property of the displacement error of jointly estimated hypotheses. Second, we present a complete multihypothesis codec which is based on the ITU-T Recommendation H.263 with multiframe capability. Multiframe motion compensation chooses one prediction signal from a set of reference frames, whereas multihypothesis prediction chooses more than one for the linear combination. With our scheme, the time dela...
Markus Flierl, Thomas Wiegand, Bernd Girod
Added 23 Dec 2010
Updated 23 Dec 2010
Type Journal
Year 2002
Where TCSV
Authors Markus Flierl, Thomas Wiegand, Bernd Girod
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