NDLI: Decoder complexity and performance comparison of matching pursuit and DCT-based MPEG-4 video codecs

Content Provider	IEEE Xplore Digital Library
Author	Neff, R. Nomura, T. Zakhor, A.
Copyright Year	1998
Description	Author affiliation: Dept. of Electr. Eng., California Univ., Berkeley, CA, USA (Neff, R.)
Abstract	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.
Starting Page	783
Ending Page	787
File Size	1051502
Page Count	5
File Format	PDF
ISBN	0818688211
DOI	10.1109/ICIP.1998.723618
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-10-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decoding Matching pursuit algorithms MPEG 4 Standard Video codecs Video compression Discrete cosine transforms Bit rate Virtual manufacturing PSNR Costs
Content Type	Text
Resource Type	Article

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