NDLI: Construction of an optimal signal-to-noise ratio quadtree using state space search techniques

Content Provider	IEEE Xplore Digital Library
Author	Tamir, D.E. Liu, B.C.
Copyright Year	1996
Description	Author affiliation: Dept. of Comput. Sci., Florida Inst. of Technol., Melbourne, FL, USA (Tamir, D.E.; Liu, B.C.)
Abstract	This paper reports the results of a set of experiments that apply state-space search methods to explore efficient ways for online construction of an optimal quadtree. An optimal quadtree is defined as a quadtree that yields a minimum reconstruction error for a given compression rate. Although some researchers have proposed procedures for image compression with quadtrees most of these methods either refer to binary images or use an off-line method to fix the variance-threshold. The results of our experiments show that a very low distortion (measured in SNR) can be achieved in a reasonable computation effort. Comparison with the literature proves that in some cases, for a given compression, our quadtree construction algorithm yields less distortion than well known image compression methods such as DCT-based vector quantization, and wavelet-based vector quantization.
Starting Page	172
Ending Page	177
File Size	564285
Page Count	6
File Format	PDF
ISBN	0780332008
DOI	10.1109/IAI.1996.493748
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-04-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio State-space methods Image coding Distortion measurement Search methods Rate distortion theory Space technology Image reconstruction Vector quantization Pixel
Content Type	Text
Resource Type	Article

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

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