MOTION COMPENSATION METHOD AND DEVICE FOR ENCODING AND DECODING SCALABLE VIDEO

摘要

Provided is a motion compensation method for encoding and decoding a scalable video. A first prediction value of pixels constituting a current block is acquired from a corresponding block of a base layer corresponding to the current block of an enhancement layer, a second prediction value of the pixels constituting the current block is acquired by using a block-unit bidirectional motion compensation result and a pixel-unit motion compensation result about the enhancement layer, and a prediction value of the pixels constituting the current block is acquired by using a weighted sum of the first prediction value and the second prediction value.

主权项

1. A motion compensation method for encoding and decoding a scalable video, the motion compensation method comprising:
acquiring a first prediction value of pixels constituting a current block from a corresponding block of a base layer corresponding to the current block of an enhancement layer; acquiring a first motion vector indicating a first corresponding block of a first reference picture referenced by the current block and a second motion vector indicating a second corresponding block of a second reference picture referenced by the current block; performing block-unit bidirectional motion compensation on the current block by using the first motion vector and the second motion vector; performing pixel-unit motion compensation on each pixel of the current block by using pixels of the first reference picture and the second reference picture; acquiring a second prediction value of the pixels constituting the current block by using block-unit bidirectional motion compensation results and pixel-unit motion compensation results; and acquiring a prediction value of the pixels constituting the current block by using a weighted sum of the first prediction value and the second prediction value.