NDLI: Deployment of wavelet transform to VOP codec scheme

Content Provider	IEEE Xplore Digital Library
Author	Konyha, L. Tran, S.M. Fazekas, K. Gschwindt, A.
Copyright Year	2002
Description	Author affiliation: Dept. of Broadband Infocommunication Syst., Budapest Univ. of Technol. & Econ., Hungary (Konyha, L.; Tran, S.M.; Fazekas, K.; Gschwindt, A.)
Abstract	The work explains the way we deploy the wavelet transform in the object-based video codec scheme proposed in our previous research (see Tran, S.M. et al., J. Commun. and IT Sciences Association, vol.LVI, no.4, 2001). Video objects are first extracted from a conventional frame-based video sequence. By representing the video objects of interest with the so-called constrained Delaunay mesh structures, we could transmit their shapes and patterns in an efficient way: mesh-nodes are tracked forward to reconstruct their new position and therefore their shape at the latter time point; the pattern of the mesh is predicted from the dense field of backward motion vectors, then they are compensated with residual errors for a "perfect" reconstruction. In the current work, the wavelet transform is applied to encode residual errors, the most bit-consuming information. Thanks to the multiresolution character of the wavelet transform, which leads to superior energy compaction and perceptual quality of the decompressed residual errors, the method surpasses the compression offered by the block-DCT in the initial phase. The overall performance of the full scheme is encouraging.
Starting Page	233
Ending Page	237
File Size	493391
Page Count	5
File Format	PDF
ISBN	9537044017
DOI	10.1109/VIPROM.2002.1026661
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-16
Publisher Place	Croatia
Access Restriction	Subscribed
Rights Holder	Croatian Soc. Electronics in Marine-ELMAR
Subject Keyword	Wavelet transforms Codecs Shape Image coding MPEG 4 Standard Image reconstruction Video compression Tracking Discrete cosine transforms Power generation economics
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
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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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