Patent ID: 8320453
Filing Date: 2012-11-27
Classification: H04N

Abstract:
1. A method for decoding a video signal performed by a video coding apparatus, comprising: receiving the video signal including a bitstream of an enhanced layer and a bitstream of a base layer; parsing first coding information from the bitstream of the enhanced layer, the first coding information indicating whether residual data of an image block in the enhanced layer is predicted from residual data of a corresponding block in the base layer, and decoding the video signal based on the first coding information, wherein the parsing step includes performing modeling the first coding information based on second coding information, the second coding information indicating whether prediction information of the corresponding block in the base layer is used to decode the image block in the enhanced layer, the prediction information including prediction mode, partition information and motion information, the prediction mode including intra mode and inter mode, the motion information including a motion vector and a reference index, and wherein the modeling comprising: deriving a context index increment based on second coding information and a context index offset for the first coding information; and deriving an initial value of a probability coding function based on the context index increment.