NDLI: Linearly constrained generalized Lloyd algorithm for reduced codebook vector quantization

Content Provider	IEEE Xplore Digital Library
Author	Winger, L.L.
Copyright Year	1991
Abstract	As linearly constrained vector quantization (LCVQ) is efficient for block-based compression of images that require low complexity decompression, it is a "de facto" standard for three-dimensional (3-D) graphics cards that use texture compression. Motivated by the lack of an efficient algorithm for designing LCVQ codebooks, the generalized Lloyd (1982) algorithm (GLA) for vector quantizer (VQ) codebook improvement and codebook design is extended to a new linearly constrained generalized Lloyd algorithm (LCGLA). This LCGLA improves VQ codebooks that are formed as linear combinations of a reduced set of base codewords. As such, it may find application wherever linearly constrained nearest neighbor (NN) techniques are used, that is, in a wide variety of signal compression and pattern recognition applications that require or assume distributions that are locally linearly constrained. In addition, several examples of linearly constrained codebooks that possess desirable properties such as good sphere packing, low-complexity implementation, fine resolution, and guaranteed convergence are presented. Fast NN search algorithms are discussed. A suggested initialization procedure halves iterations to convergence when, to reduce encoding complexity, the encoder considers the improvement of only a single codebook for each block. Experimental results for image compression show that LCGLA iterations significantly improve the PSNR of standard high-quality lossy 6:1 LCVQ compressed images.
Sponsorship	IEEE Signal Processing Society
Starting Page	1501
Ending Page	1509
Page Count	9
File Size	176697
File Format	PDF
ISSN	1053587X
Volume Number	49
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image coding Algorithm design and analysis Neural networks Convergence Vector quantization Graphics Nearest neighbor searches Pattern recognition Signal resolution PSNR
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Linearly constrained generalized Lloyd algorithm for virtual codebook vector quantization

Neural network-based codebook search for image compression

Fast nearest neighbor search of entropy-constrained vector quantization

Fast codebook generation for Vector Quantization using Ordered Pairwise Nearest Neighbor with Multiple Merging

A fast codebook search algorithm for nearest-neighbor pattern matching

An enhanced generalized Lloyd algorithm

Efficient approximate nearest neighbor search by optimized residual vector quantization

Multirate codebook design with the entropy-constrained pairwise nearest neighbor (ECPNN) algorithm

A fast nearest neighbor search algorithm for image vector quantization

Linearly constrained generalized Lloyd algorithm for reduced codebook vector quantization

Similar Documents

Linearly constrained generalized Lloyd algorithm for virtual codebook vector quantization

Neural network-based codebook search for image compression

Fast nearest neighbor search of entropy-constrained vector quantization

Fast codebook generation for Vector Quantization using Ordered Pairwise Nearest Neighbor with Multiple Merging

A fast codebook search algorithm for nearest-neighbor pattern matching

An enhanced generalized Lloyd algorithm

Efficient approximate nearest neighbor search by optimized residual vector quantization

Multirate codebook design with the entropy-constrained pairwise nearest neighbor (ECPNN) algorithm

A fast nearest neighbor search algorithm for image vector quantization

Linearly constrained generalized Lloyd algorithm for reduced codebook vector quantization