Method and apparatus for encoding and decoding motion vectors

Details Method and apparatus for encoding and decoding motion vectors Method and apparatus for encoding and decoding motion vectors

2007-08-14

2007-08-14

Sherali, Ishrat (Department: 2624)

Image analysis

Image compression or coding

Predictive coding

Reexamination Certificate

active

10619615

ABSTRACT:
There is provided a method and apparatus for encoding and decoding motion vectors. Motion vectors are encoded through the steps of: (a) predicting motion vectors of a type identical to that of a present block and obtaining predictive motion vectors with respect to neighbor blocks having motion vectors of a type different from that of the present block among a plurality of neighbor blocks adjacent to the present block; (b) calculating a representative value of the motion vectors of the type identical to that of the present block from the motion vectors of the neighbor blocks and the predictive motion vectors; (c) calculating a difference value between the calculated representative value and the motion vector of the present block; and (d) encoding the calculated difference value. The motion vectors can be more efficiently encoded even when they refer to different reference pictures.

REFERENCES:
patent: 5825930 (1998-10-01), Park et al.
patent: 6023298 (2000-02-01), Hwang
patent: 6625214 (2003-09-01), Umehara et al.
patent: 6925123 (2005-08-01), Subramaniyan et al.
“Text of Committee Draft of Joint Video Specification (ITU-T REC. H-264 ISO/IEC 14496-10 AVC) MPEG02/N4810”, ISO/IEC JTCI/SC29/WG11 MPEG02/N4810, Fairfax, US, May 2002, pp. I-X, 1, XPO01074690.
“Working Draft No. 2, Revision 2 (WD-2)”, Document JVT-B118R2, Jan. 29, 2002, pp. 1-10, XP001086630.
Fukunaga S et al: “MPEG-4 Video Verification Model Version 16.0” International Organization for Standardization-Organisation Internationale de Normalisation, vol. N3312, Mar. 2000, pp. 1-380, XPO00861688.
“Recommendation H.263: Video coding for low bit rate communication” ITU-T Draft Recommendation H.263, Feb. 1998, pp. 1-167, XP002176560.
Wiegand T et al: “Block-Based Hybrid Video Coding Using Motion-Compensated Long-Term Memory Prediction”, ITG Fachberichte, VDE Verlag, Berlin, DE, No. 143, 1997, pp. 153-158, XP000924838.

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