Referenced Items are not available for this document.
Matching pursuits is an overcomplete expansion technique which has been successfully applied to the problem of coding motion residual images in a hybrid video coder. In this paper, the coding efficiency and decoder complexity of the method are compared to that of the DCT-based MPEG-4 standard with and without post-processing. Without post-processing, matching pursuits is shown to have significantly better PSNR and visual quality and similar decoding complexity compared to the MPEG-4 DCT decoder. To achieve reasonable quality at low bit rates, the DCT-based scheme requires post-processing, while the patching pursuit scheme does not. We show that the MPEG-4 post-processing filters have a prohibitive cost, increasing decoder complexity by a factor of 3 to 8. Finally, we introduce an all-integer matching pursuit implementation. The performance is shown to be within 0.05 dB of the original floating point algorithm
Published in:
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
(Volume:1
)
Date of Conference: 4-7 Oct 1998
- Page(s):
- 783 - 787 vol.1
- Meeting Date :
- 04 Oct 1998-07 Oct 1998
- Print ISBN:
- 0-8186-8821-1
- INSPEC Accession Number:
- 6201041
- Conference Location :
- Chicago, IL
- Digital Object Identifier :
- 10.1109/ICIP.1998.723618
- Product Type:
- Conference Publications
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