Television – Bandwidth reduction system – Data rate reduction
Patent
1994-07-21
1996-12-24
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348699, H04N 736
Patent
active
055877419
ABSTRACT:
Motion vectors between a current frame and its preceding frame of video signals are optimally determined to a half-pixel accuracy by finding a plurality of full-pixel resolution motion vectors corresponding to a plurality of best matching blocks in a search region; and, thereafter, deriving a half-pixel resolution motion vector by selecting an half-pixel resolution block which yields the minimum error functions out of all possible half-pixel resolution candidate blocks included in half-pixel resolution search regions, each of which corresponding to one of the full-pixel motion vectors.
REFERENCES:
patent: 4937666 (1990-06-01), Yang
patent: 5408269 (1995-05-01), Tsukagoshi
Staffan Ericsson, "Fixed and Adaptive Predictors for Hybrid Predictive/Transform Coding", IEEE Transactions on Communications, vol. COM-33, No. 12, Dec. 1985.
Ninomiya and Ohtsuka, "A Motion-Compensated Interframe Coding Scheme for Television Pictures", IEEE Transactions on Communications, vol. COM-33, No. 1, Jan. 1982.
Chen and Pratt, "Scene Adaptive Coder", IEEE Transactions on Communications, vol. COM-32, No. 3, Mar. 1984.
Jain et al., "Displacement Measurement and Its Application in Interframe Image Coding", IEEE Transactions of Communications, vol. COM-29, No. 12, Dec. 1981.
MPEG Video Simulation Model Three, International Organization for Standardization, Coded Representation of Picture and Audio Information, pp. D29-D32, 1990, ISO-IEC/JTC1/SC2/WG8 MPEG 90/041.
X. Lee, "A Fast Matching Algorithm of Motion Compensation for Hierarchical Video CODEC" Processing SPIE. Visual Communications and Image processing '92, vol. 1818, 18 Nov. 1992, pp. 1462-1474.
Au A.
Chin Tommy P.
Daewoo Electronics Co. Ltd.
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