NDLI: A color vector quantization based video coder

Content Provider	IEEE Xplore Digital Library
Author	Zhu Li Katsaggelos, A.K.
Copyright Year	2002
Description	Author affiliation: Multimedia Commun. Res. Lab., Motorola Labs., Schaumburg, IL, USA (Zhu Li)
Abstract	Color vector quantization (VQ) has been an efficient still image compression scheme as well as a popular bitmap graphics format for display devices with limited color capability. In this paper we are proposing a color vector quantization-based video coder, exploiting the temporal stationary nature of color distribution among a group of pictures (GOP) over a short period. Color VQ is applied first to reduce the RGB image sequence into a single channel color index image. Motion estimation and compression is then performed in the index space, instead of the separate YCbCr channels. Initial results demonstrated that the proposed coder can provide good compression rates. By eliminating the need for an inverse DCT and color conversion, typical requirements in a JPEG/MPEG type of coders, the decoding is computationally very simple. This makes it suitable for certain applications like media playback, and visual communications with low-end mobile devices.
Sponsorship	IEEE Signal Process. Soc
File Size	244123
File Format	PDF
ISBN	0780376226
ISSN	15224880
DOI	10.1109/ICIP.2002.1039060
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-09-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vector quantization Image coding Video compression Transform coding Graphics Displays Image sequences Motion estimation Discrete cosine transforms Image converters
Content Type	Text
Resource Type	Article

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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
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