METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING WITH SUBBLOCK BASED LOCAL ILLUMINATION COMPENSATION

摘要

Different implementations are described, particularly implementations for video encoding and decoding based on a linear model responsive to neighboring samples are presented. Accordingly, for a block being encoded or decoded in a picture, refined linear model parameters are determined for a current subblock in the block and for encoding the block, the local illumination compensation uses a linear model for the current subblock based on the refined linear model parameters. In a first embodiment, the number N of reconstructed samples increases with the available data for the subblock. In a second embodiment, partial linear model parameters are determined for the subblock and refined linear model parameters are derived from a weighted sums of partial linear model parameters. In a third embodiment, the subblocks are independently LIC processed.