DocumentCode :
894423
Title :
High-resolution still-image transmission based on CCITT H.261 codec
Author :
Loui, A.C.P. ; Liou, M.L.
Author_Institution :
Bellcore, Red Bank, NJ, USA
Volume :
3
Issue :
2
fYear :
1993
fDate :
4/1/1993 12:00:00 AM
Firstpage :
164
Lastpage :
169
Abstract :
An efficient scheme is given for transmitting high-resolution still images based on a lower-resolution CCITT H.261 codec. Two transmission schemes based on a subsampling approach are studied in terms of image quality, transmission delay, and compatibility with H.261. It is found that the sequential frame-repeat scheme provides a good compromise among the different criteria. In addition, a simple progressive-reconstruction procedure for the decoded subimages is described. Simulation results show that the visual effects of such a reconstruction procedure are quite pleasing
Keywords :
codecs; video equipment; CCITT H.261 codec; compatibility; decoded subimages; high-resolution still images; image quality; progressive-reconstruction procedure; sequential frame-repeat scheme; still-image transmission; subsampling approach; transmission delay; visual effects; Codecs; Entropy; Filters; HDTV; Image reconstruction; Image resolution; Modulation coding; Pixel; Pulse modulation; Signal resolution;
fLanguage :
English
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8215
Type :
jour
DOI :
10.1109/76.212723
Filename :
212723
Link To Document :
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