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Multiple description video transcoding with temporal drift control
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| This paper proposes a multiple description (MD) transcoding scheme capable of preventing drift by distortion accumulation in temporally predicted motion compensated slices. Drift compensation is achieved by generating a controlled amount of side information to be used for decoding whenever a description fails to reach the end user terminal. The side information is generated by re-encoding the transcoding residue with an independent quantisation parameter which also controls redundancy. A simplified architecture is devised to reduce transcoding complexity in regard to the number of processing functions and buffer requirements. The experimental results show that temporally predicted frames do not suffer from drift and their quality is significantly improved at reduced redundancy cost in comparison with a classic MD transcoding scheme. | 116.19 KB | Adobe PDF |
Advisor(s)
Abstract(s)
This paper proposes a multiple description (MD) transcoding scheme capable of preventing drift by distortion accumulation in temporally predicted motion compensated slices. Drift compensation is achieved by generating a controlled amount of side information to be used for decoding whenever a description fails to reach the end user terminal. The side information is generated by re-encoding the transcoding residue with an independent quantisation parameter which also controls redundancy. A simplified architecture is devised to reduce transcoding complexity in regard to the number of processing functions and buffer requirements. The experimental results show that temporally predicted frames do not suffer from drift and their quality is significantly improved at reduced redundancy cost in comparison with a classic MD transcoding scheme.
Description
EISBN - 978-1-4244-7135-5
Keywords
Multiple Description Transcoding Multiple Description Scalar Quantisation Drift Distortion
Pedagogical Context
Citation
P. Correia, P. Assungão and V. Silva, "Multiple description video transcoding with temporal drift control," 28th Picture Coding Symposium, Nagoya, Japan, 2010, pp. 558-561, doi: https://doi.org/10.1109/PCS.2010.5702563.
Publisher
IEEE Canada
CC License
Without CC licence