Apparatus and method for generating a coded video sequence by using an intermediate layer motion data prediction

摘要

In the scalable video coding in connection with motion compensation both in a base layer and in an enhancement layer, a prediction of the motion data of the enhancement layer is performed by using the motion data of the base layer to obtain a scalability concept, which provides, on the one hand, a maximum flexibility for the calculation of the motion data of the different layers and, on the other hand, allows a lower bit rate.

主权项

1. An apparatus for decoding a coded video sequence with a base scaling layer and an enhancement scaling layer, comprising:
a base picture decoder configured for decoding the base scaling layer to obtain a decoded base sequence of residual error pictures and base motion data; an enhancement picture decoder configured for decoding the enhancement scaling layer to obtain information about an enhancement sequence of residual error pictures and information about enhancement motion data, wherein the information about enhancement motion data comprises blockwise signalization information, wherein the blockwise signalization information have a first state for a first block of the coded video sequence, the first block not containing any transmitted enhancement motion data for the first block, the signalization information having a second state for a second block of the coded video sequence, the second block being different from the first block and containing, in addition to the signalization information, transmitted enhancement motion data for the second block; an enhancement motion data calculator configured for blockwise calculating first enhancement motion data for the first block and second enhancement motion data for the second block by evaluating the signalization information, wherein the enhancement motion data calculator is configured for using, in response to the first state of the signalization information, only the base motion data for calculating the first enhancement motion data for the first block, wherein the enhancement motion data calculator is furthermore configured for using, in response to the second state of the signalization information different from the first state of the signalization information, the transmitted enhancement motion data for the second block extracted by the enhancement picture decoder from the enhancement scaling layer exclusively or in combination with the base layer motion data for calculating the second enhancement motion data for the second block; and an enhancement motion combiner configured for obtaining a sequence of pictures of the enhancement scaling layer by blockwise using the enhancement sequence of residual error pictures and the first enhancement motion data for the first block and the second enhancement motion data for the second block.