ENHANCEMENT OF IMAGE QUALITY FOR LOW BIT RATE VIDEO CODING

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DC Field	Value	Language
dc.contributor.author	NGAN, KN	en_US
dc.contributor.author	LIN, DW	en_US
dc.contributor.author	LIOU, ML	en_US
dc.date.accessioned	2014-12-08T15:05:07Z	-
dc.date.available	2014-12-08T15:05:07Z	-
dc.date.issued	1991-10-01	en_US
dc.identifier.issn	0098-4094	en_US
dc.identifier.uri	http://dx.doi.org/10.1109/31.97543	en_US
dc.identifier.uri	http://hdl.handle.net/11536/3664	-
dc.description.abstract	CCITT Recommendation H.261 on coding for visual telephony is applicable to bit rates of p X 64 kbits/s, where p = 1,2,..., 30. It generally performs well over the intended bit rates. However, at the very low rates of 64 and 128 kbits/s, it suffers from visual degradation due to coarse quantization. In this paper, we studied the various approaches or combinations of them to improve the image quality. Methods studied include reducing the quantizer step size, randomized scanning of the macroblocks, and/or nonuniform quantization of the transform coefficients.	en_US
dc.language.iso	en_US	en_US
dc.title	ENHANCEMENT OF IMAGE QUALITY FOR LOW BIT RATE VIDEO CODING	en_US
dc.type	Note	en_US
dc.identifier.doi	10.1109/31.97543	en_US
dc.identifier.journal	IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS	en_US
dc.citation.volume	38	en_US
dc.citation.issue	10	en_US
dc.citation.spage	1221	en_US
dc.citation.epage	1225	en_US
dc.contributor.department	交大名義發表	zh_TW
dc.contributor.department	National Chiao Tung University	en_US
dc.identifier.wosnumber	WOS:A1991GJ76000012	-
dc.citation.woscount	3	-
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