US 7,321,625 B2 | ||
Wavelet based multiresolution video representation with spatially scalable motion vectors | ||
Huipin Zhang, Milpitas, Calif. (US); and Frank Jan Bossen, San Jose, Calif. (US) | ||
Assigned to NTT DoCoMo, Inc., Tokyo (Japan) | ||
Filed on Dec. 13, 2002, as Appl. No. 10/318,802. | ||
Prior Publication US 2004/0114689 A1, Jun. 17, 2004 | ||
Int. Cl. H04B 1/66 (2006.01); H04N 7/12 (2006.01); H04N 11/02 (2006.01); H04N 11/06 (2006.01) |
U.S. Cl. 375—240.11 | 23 Claims |
1. A method for determining multiresolution video representations for scalable video coding, the method comprising:
performing subband motion compensated temporal filtering (MCTF) on input video signals, including performing a spatial decomposition
on the input video signals, wherein motion vectors are available for subbands of the spatial decomposition; and
obtaining a multiresolution representation of the filtered input video signals along both spatial directions and temporal
direction,
wherein spatial scalability is supported by video coders that use the multiresolution video representations, and, when combined
with temporal scalability, is limitedly supported by video coders, depending on the representation that is used by the video
coders, and further wherein combined spatial scalability and temporal scalability supported by a representation can be characterized
by a spatial-temporal scalability (ST) table.
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