NDLI: New finite state vector quantizers for images

Content Provider	IEEE Xplore Digital Library
Author	Kim, T.
Copyright Year	1988
Description	Author affiliation: AT&T Bell Lab., Murray Hill, NJ, USA (Kim, T.)
Abstract	Two finite-state vector designs are introduced, namely, side-match vector quantizers (SMVQ) and overlap-match vector quantizers (OMVQ). The underlying ideas of SMVQ and OMVQ are simple and intuitive, and so are their design procedures. They try to avoid large grey-level transitions across pixel block (vector) boundaries which cause the annoying 'blockyness' effect in memoryless VQ. Experimental results show that when they are applied to 512*512 grey-level images, SMVQ and OMVQ can achieve communication-quality reproduction 33.5 dB peak-signal-to-noise ratio (PSNR) at the average rate of 1/2 bit per pixel per image frame and acceptable quality reproduction (30 dB PSNR) at 1/4 bit per pixel. These performances are superior to those of ordinary VQ by more than 3 dB in PSNR. Further, because block boundaries are less visible, the perceived improvement in quality over ordinary VQ is even greater.<>
Starting Page	1180
Ending Page	1183
File Size	590861
Page Count	4
File Format	PDF
ISSN	15206149
DOI	10.1109/ICASSP.1988.196809
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-04-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pixel Image coding PSNR Decoding Vector quantization Sampling methods State-space methods Speech coding
Content Type	Text
Resource Type	Article

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