Cryptography Reference
In-Depth Information
Spatio-Temporal Transform
Entropy Coding
Input
Scalable or
CABAC
Coding
4x4
Transform
MCTF
Bit-Stream
Motion
Ref inement
Residue
Prediction
Decomation
Scalable or
CABAC
Coding
4x4
Transform
MCTF
(a) An AVC/H.264-based approach (also DCT-based)
Spatio-Temporal Transform
Entropy Coding
Input
Bit-Stream
Tem poral
MCTF
Scalable
Coding
Spatial
2D Wavelet
(b) A wavelet-based approach with t+2 structure
Spatio-Temporal Transform
Entropy Coding
Input
In-band
Temporal
MCTF
Scalable
Coding
Spatial
2D Wavelet
Spatial 2D
Decomposition
HF
Bit-Stream
In-band
Temporal
MCTF
Scalable
Coding
Spatial 2D
Decomposition
LL
(c) A wavelet-based approach with 2D+t+2D structure
Fig. 3.2.
An architectural level comparison for various SVC algorithms [2].
future video coding applications. In this chapter, we give a brief overview of
the latest advances in these technologies. The rest of this chapter is organized
as follows. Section 3.2 elaborates the details for each dimension of scalability
in the AVC-based approach and Section 3.3 describes the basis and varia-
tions of the wavelet-based scheme. It also compares this with the performance
with that of the AVC-based scheme. The latest MPEG activities in SVC are
summarized Section 3.4.
