NDLI: Object based video with progressive foreground

Content Provider	IEEE Xplore Digital Library
Author	Monro, D.M. Li, H. Nicholls, J.A.
Copyright Year	1997
Description	Author affiliation: Sch. of Electron. & Electr. Eng., Bath Univ., UK (Monro, D.M.)
Abstract	A novel algorithm is described for coding objects in video compression systems which gives complete control over the bit allocation to the video objects. The method is evaluated by application to a two layer codec, with background and foreground objects. Images in a sequence are divided into macroblocks, which are compared to a stored background model. Those whose mean square difference (MSD) exceeds a noise threshold are considered as foreground, and may be split into successively finer partitions described by a quadtree data structure. This defines more precisely the outline of the foreground object within each macroblock and gives a set of microblocks of variable size. The microblocks are transformed by the 2D DCT, and the DCT coefficients are coded bitplane by bitplane over the selected object using a zigzag masked (ZZM) technique. For robustness, data is then transmitted macroblock by macroblock, and intraframe or interframe coding of blocks can be selected adaptively at frame, macroblock or microblock level. The scheme is designed to stop sending bits when a certain bit allocation or PSNR is reached for any object, leading to fully controllable bit rates. The relationship between the average PSNR of the sequence and the average bits per pixel in a frame shows that the codec gives good performance over a range of peak bit rates from 0.1 bpp to 1 bpp. Over the whole range, the quality of the reconstructed sequence is significantly better than 'motion JPEG', while the codec is much simpler and faster than MPEG.
Starting Page	448
Ending Page	451
File Size	555943
Page Count	4
File Format	PDF
ISBN	0818681837
DOI	10.1109/ICIP.1997.632154
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bit rate Video compression Discrete cosine transforms PSNR Transform coding Codecs Control systems Data structures Robustness Motion compensation
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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