METHOD AND APPARATUS FOR ENCODING/DECODING FGS LAYERS USING WEIGHTING FACTOR.

摘要

Provided is a method of encoding FGS layers by using weighted average sums. Method includes calculating a first weighted average sum by using a restored block of n enhanced layer of a previous frame and a restored block of a base layer of a current frame; calculating a second weighted average sum by using a restored block of n enhanced layer of a next frame and a restored block of a base layer of the current frame; generating a prediction signal of n enhanced layer of the current frame by adding residual data of (n 1) enhanced layer of the current frame to a sum of the first weighted average sum and the second weighted average sum; and encoding residual data of n' enhanced layer, which is obtained by subtracting the generated prediction signal of n enhanced layer from the restored block of n' enhanced layer of the current frame.