Apparatus and method for multilayer picture encoding/decoding

摘要

Provided is a multilayer picture encoding/decoding apparatus and method for reducing a dynamic range of residual pictures occurring in enhancement layers. The multilayer picture encoding method includes performing format down-conversion on an input picture, and generating a lower layer bitstream by encoding the format down-converted input picture; performing format up-conversion by adaptively or selectively applying a 1-dimensional (1-D) prediction filter to a picture of the lower layer depending on whether a lower layer prediction flag is set or not; and calculating a residual picture between the input picture and the format up-converted picture, and generating an enhancement bitstream by encoding the calculated residual picture.

主权项

1. A multilayer picture decoding method for decoding layer pictures, by apparatus for multilayer picture decoding, comprising:
outputting a lower layer picture by decoding a lower layer bitstream; outputting a residual picture by decoding an enhancement layer bitstream; performing format up-conversion on the lower layer picture; and restoring an enhancement layer picture by adding the residual picture to the format up-converted picture.