Transform Coefficient Coding for Screen Content in Versatile Video Coding (VVC)

A transform coefficient coding scheme is proposed for 4 × 4 blocks in Versatile Video Coding (VVC), targeting screen content applications. The proposed algorithm, called Unary Bitplane Coding (UBC), uses unary codes of the coefficient amplitudes and represents each block by their bitplanes. This rep...

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Vydáno v:Proceedings of the ... IEEE International Conference on Acoustics, Speech and Signal Processing (1998) s. 1792 - 1796
Hlavní autoři: Abdoli, Mohsen, Henry, Felix, Brault, Patrice, Dufaux, Frederic, Duhamel, Pierre
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.05.2019
Témata:
Encoding
Entropy
Feature extraction
Residual transform coding
Screen content
Source separation
Transforms
Video coding
VVC
ISSN:2379-190X
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Popis
Shrnutí:A transform coefficient coding scheme is proposed for 4 × 4 blocks in Versatile Video Coding (VVC), targeting screen content applications. The proposed algorithm, called Unary Bitplane Coding (UBC), uses unary codes of the coefficient amplitudes and represents each block by their bitplanes. This representation allows exploiting further contextual information for source separation during the entropy coding. Experiments in the Joint Exploration test Model (JEM) show that replacing the existing transform coding with UBC only for 4 × 4 blocks brings on average 2.8% and 3.4% BD-R gain in the random access and all intra modes, respectively.
ISSN:2379-190X
DOI:10.1109/ICASSP.2019.8683285