METHOD AND APPARATUS OF BI-DIRECTIONAL PREDICTION FOR SCALABLE VIDEO CODING

摘要

A method and apparatus for inter-layer prediction for scalable video coding are disclosed. Embodiments of the present invention utilize weighted prediction for scalable coding. The weighted prediction is based on the predicted texture data and the inter-layer Intra prediction data derived from BL reconstructed data. The inter-layer Intra prediction data corresponds to the BL reconstructed data or up-sampled BL reconstructed data. The predicted texture data corresponds to spatial Intra prediction data or motion-compensated prediction data based on the second EL video data in the same layer as the current EL picture. Embodiments of the present invention also utilize the reference picture list including an inter-layer reference picture (ILRP) corresponding to BL reconstructed texture frame or up-sampled BL reconstructed texture frame for Inter prediction of EL video data. The motion vector is limited to a range around (0,0) when the ILRP is selected as a reference picture.

主权项

1. A method of inter-layer prediction for scalable video coding, wherein video data is configured into a Base Layer (BL) and an Enhancement Layer (EL) and wherein EL video data has higher spatial resolution or better quality than BL video data, the method comprising:
receiving first data associated with first EL video data of a current EL picture; determining inter-layer Intra prediction data for the first EL video data, wherein the inter-layer Intra prediction data is derived from BL data; determining predicted texture data for the EL picture based on second EL video data in a same layer as the current EL picture; generating weighted prediction data for at least one portion of the first EL video data, wherein the weighted prediction data corresponds to weighted sum of the inter-layer Intra prediction data and the predicted texture data; and applying predictive encoding or decoding to said at least one portion of the first data based on the weighted prediction data.