(i9) United States
(12) Patent Application Publication oo) Pub. No.: US 2007/0201551 Al
Wang et al. (43) Pub. Date: Aug. 30,2007
(54) SYSTEM AND APPARATUS FOR
LOW-COMPLEXITY FINE GRANULARITY
SCALABLE VIDEO CODING WITH MOTION
(75) Inventors: Xianglin Wang, Irving, TX (US);
Marta Karczewicz, Irving, TX (US);
Justin Ridge, Sachse, TX (US); Nejib
Ammar, Irving, TX (US)
WARE FRESSOLA VAN DER SLUYS &
BRADFORD GREEN, BUILDING 5
755 MAIN STREET, P O BOX 224
MONROE, CT 06468 (US)
(73) Assignee: Nokia Corporation
(21) Appl. No.: 11/651,943
(22) Filed: Jan. 9, 2007
Related U.S. Application Data
(60) Provisional application No. 60/757,746, filed on Jan. 9, 2006.
(51) Int. CI.
H04B 1/66 (2006.01)
H04N 11/04 (2006.01)
(52) U.S. CI 375/240.1; 375/240.24
A coding structure is configured to improve coding efficiency together with reduced encoding and decoding complexity for scalable video encoding. Especially, the case of coding multiple FGS layers on top of a discrete layer is considered. For coding multiple FGS layers, a decoderoriented two-loop structure is used. At the decoder side, the new structure has similar complexity as the two-loop structure while providing similar coding performance as multiloop structure. The coding structure and method is configured for preventing the drift effect in case of partial decoding due to the usage of FGS layer for inter-discrete-layer prediction, and aims at effectively utilizing temporal prediction in FGS layer coding to improve coding efficiency. The coding method can avoid additional transform operations; avoid applying in-loop de-blocking filter to FGS layers; and use simpler residual transform on FGS layers.