Image coding using variable-rate classified side-match vector quantization

Zhe-Ming Lu; Sheng-He Sun

doi:10.1117/12.413908

19 January 2001 Image coding using variable-rate classified side-match vector quantization

Zhe-Ming Lu, Sheng-He Sun

Proceedings Volume 4170, Image and Signal Processing for Remote Sensing VI; (2001) https://doi.org/10.1117/12.413908
Event: Europto Remote Sensing, 2000, Barcelona, Spain

Abstract

Vector quantization (VQ) is an attractive image compression technique. VQ utilizes the high correlations between neighboring pixels in a block, but disregards the high correlations between the adjacent blocks. Unlike VQ, Side match VQ (SMVQ) exploits codeword information of two encoded adjacent blocks, the upper and left blocks, to encode the current input vector. However, SMVQ doesn’t consider edge characteristics of the current input vector and its neighboring vectors at all. Variable-rate SMVQ has been proposed in the literature that exploits a block classifier to decide which class the input vector belongs to using the variances of the upper and left codewords. However, this block classifier didn’t take the variance of the current input vector itself into account. Based on this, variable-rate SMVQ with a new block classifier called new CSMVQ is proposed. This classifier uses the variance of the input vector together with variances of its neighboring encoded blocks to encode the input vector. Experimental results show that new CSMVQ can obtain lower bit rate than VQ and old CSMVQ. Moreover, new CSMVQ can obtain higher image quality than SMVQ, old CSMVQ and VQ. In addition, new CSMVQ needs shorter encoding time than old CSMVQ.

Citation Download Citation

Zhe-Ming Lu and Sheng-He Sun "Image coding using variable-rate classified side-match vector quantization", Proc. SPIE 4170, Image and Signal Processing for Remote Sensing VI, (19 January 2001); https://doi.org/10.1117/12.413908

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Computer programming

Image compression

Quantization

Distortion

Image quality

Distance measurement

Image processing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years