FAST CONVERSION OF H.264/AVC INTEGER TRANSFORM COEFFICIENTS INTO DCT COEFFICIENTS

R. Marques, V. Silva, S. Faria, A. Navarro, P. Assuncao

2006

Abstract

In this paper we propose a fast method to convert H.264/AVC 4x4 Integer Transform (IT) to standard Discrete Cosine Transform (DCT for video transcoding applications. We derive the transcoding matrix for converting, simultaneously, in the transform domain, four IT 4x4 blocks into one 8 x 8 DCT block of coefficients. By exploiting the symmetry properties of the matrix, we show that the proposed conversion method requires fewer operations than its equivalent in the pixel domain. An integer matrix approximation is also proposed. The experimental results show that a negligible error is introduced, while the computational complexity can be significantly reduced.

References

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Paper Citation


in Harvard Style

Marques R., Silva V., Faria S., Navarro A. and Assuncao P. (2006). FAST CONVERSION OF H.264/AVC INTEGER TRANSFORM COEFFICIENTS INTO DCT COEFFICIENTS . In Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006) ISBN 978-972-8865-64-1, pages 5-8. DOI: 10.5220/0001572500050008


in Bibtex Style

@conference{sigmap06,
author={R. Marques and V. Silva and S. Faria and A. Navarro and P. Assuncao},
title={FAST CONVERSION OF H.264/AVC INTEGER TRANSFORM COEFFICIENTS INTO DCT COEFFICIENTS},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)},
year={2006},
pages={5-8},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001572500050008},
isbn={978-972-8865-64-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)
TI - FAST CONVERSION OF H.264/AVC INTEGER TRANSFORM COEFFICIENTS INTO DCT COEFFICIENTS
SN - 978-972-8865-64-1
AU - Marques R.
AU - Silva V.
AU - Faria S.
AU - Navarro A.
AU - Assuncao P.
PY - 2006
SP - 5
EP - 8
DO - 10.5220/0001572500050008