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High-resolution still-image transmission based on CCITT H.261 codec

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2 Author(s)
Loui, A.C.P. ; Bellcore, Red Bank, NJ, USA ; Liou, M.L.

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

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Circuits and Systems for Video Technology, IEEE Transactions on  (Volume:3 ,  Issue: 2 )