METHOD AND APPARATUS FOR IMPROVING CODING RATE BY CODING PREDICTION INFORMATION FROM BASE LAYER AND ENHANCEMENT LAYER

摘要

An encoding method, a decoding method, a video encoder, and a video decoder are provided to increase the compression ratio of data by determining whether data for an enhancement layer are predicted from a base layer frame. A coding process is performed in a multilayer-based video encoder. A base layer frame is created from an input frame(S101). Data for an enhancement layer are created from the input frame, wherein the data for the enhancement layer refer to the base layer frame. It is determined whether data for the enhancement layer are predictable from data for the base layer frame. The data for the enhancement layer are encoded according to the determined result(S120).