NDLI: An adaptive perceptual quantization algorithm for video coding

Content Provider	IEEE Xplore Digital Library
Author	Chun, K.W. Lim, K.W. Cho, H.D. Ra, J.B.
Copyright Year	1975
Abstract	A novel adaptive quantization algorithm for video sequence coding which can reflect macroblock characteristics as well as the status of the output channel buffer is described. The exploit local perceptual characteristics in the macroblock, block-based visual activities are determined and used to decide the perceptual quantization scaling factor. By using the proposed scheme, coding distortion is uniformly distributed across the image and its visibility is further minimized. A simulation was performed by applying the proposed adaptive perceptual quantization scheme to an HDTV (high-definition television) coding system at a rate of about 0.35 b/pixel. The scheme was compared with a simple quantization method, which does not use perceptual local activity, in terms of subjective quality. It was observed that the proposed method achieved significant improvement in the perceptual image quality.<>
Sponsorship	IEEE Consumer Electronics Society
Starting Page	555
Ending Page	558
Page Count	4
File Size	406179
File Format	PDF
ISSN	00983063
Volume Number	39
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantization Video coding Video sequences Discrete cosine transforms Redundancy Image coding Motion estimation Motion compensation Video compression Image segmentation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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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