IMPROVING MULTISCALE RECURRENT PATTERN IMAGE CODING WITH DEBLOCKING FILTERING

Nuno M. M. Rodrigues, Eduardo A. B. da Silva, Murilo B. de Carvalho, Sérgio M. M. de Faria, Vitor M. M. da Silva

Abstract

The Multidimensional Multiscale Parser (MMP) algorithm is an image encoder that approximates the image blocks by using recurrent patterns, from an adaptive dictionary, at different scales. This encoder performs well for a large range of image data. However, images encoded with MMP suffer from blocking artifacts. This paper presents the design of a deblocking filter that improves the performance the MMP. We present the results of our research, that aims to increase the performance of MMP, particularly for smooth images, without causing quality losses for other image types, where its performance is already up to 5 dB better than that of top transform based encoders. For smooth images, the proposed filter introduces relevant perceptual quality gains by efficiently eliminating the blocking effects, without introducing the usual blurring artifacts. Besides this, we show that, unlike traditional deblocking algorithms, the proposed method also improves the objective quality of the decoded image, achieving PSNR gains of up to about 0.3 dB. With such gains, MMP reaches an almost equivalent performance to that of the state-of-the-art image encoders (equal to that of JPEG2000 for higher compression ratios), for smooth images, while maintaining its gains for non-smooth images. In fact, for all image types, the proposed method provides significant perceptual improvements, without sacrificing the PSNR performance.

References

  1. de Carvalho, M., da Silva, E., and Finamore, W. (2002). Multidimensional signal compression using multiscale recurrent patterns. Elsevier Signal Processing, (82):1559-1580.
  2. de Carvalho, M., Lima, D. M., da Silva, E., and Finamore, W. (2000). Universal multi-scale matching pursuits algorithm with reduced blocking effect. IEEE International Conference on Image Processing.
  3. Joint Video Team (JVT), ISO/IEC MPEG & ITU-T VCEG, I. J. . I.-T. S. Q. (2005). Draft of Version 4 of H.264/AVC (ITU-T Recommendation H.264 and ISO/IEC 14496-10 (MPEG-4 part 10) Advanced Video Coding).
  4. Rodrigues, N. M. M., da Silva, E. A. B., de Carvalho, M. B., de Faria, S. M. M., and Silva, V. M. M. (2005). Universal image coding using multiscale recurrent patterns and prediction. IEEE International Conference on Image Processing.
  5. Rodrigues, N. M. M., da Silva, E. A. B., de Carvalho, M. B., de Faria, S. M. M., Silva, V. M. M., and Pinagé, F. (2006). Efficient dictionary design for multiscale recurrent patterns image coding. ISCAS 2006 IEEE International Symposium on Circuits and Systems.
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Paper Citation


in Harvard Style

M. M. Rodrigues N., A. B. da Silva E., B. de Carvalho M., M. M. de Faria S. and M. M. da Silva V. (2006). IMPROVING MULTISCALE RECURRENT PATTERN IMAGE CODING WITH DEBLOCKING FILTERING . In Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006) ISBN 978-972-8865-64-1, pages 118-125. DOI: 10.5220/0001572701180125


in Bibtex Style

@conference{sigmap06,
author={Nuno M. M. Rodrigues and Eduardo A. B. da Silva and Murilo B. de Carvalho and Sérgio M. M. de Faria and Vitor M. M. da Silva},
title={IMPROVING MULTISCALE RECURRENT PATTERN IMAGE CODING WITH DEBLOCKING FILTERING},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)},
year={2006},
pages={118-125},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001572701180125},
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 - IMPROVING MULTISCALE RECURRENT PATTERN IMAGE CODING WITH DEBLOCKING FILTERING
SN - 978-972-8865-64-1
AU - M. M. Rodrigues N.
AU - A. B. da Silva E.
AU - B. de Carvalho M.
AU - M. M. de Faria S.
AU - M. M. da Silva V.
PY - 2006
SP - 118
EP - 125
DO - 10.5220/0001572701180125