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Adaptive Delta Modulation Systems for Video Encoding

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3 Author(s)
Tsu-Luen Lei ; City College of New York, NY ; Scheinberg, N. ; Schilling, D.L.

This paper describes several adaptive delta modulators designed to encode video signals. One- and two-dimensional ADM algorithms are discussed and compared. Results are shown for bit rates of 2 bits/pixel, 1 bit/pixel and 0.5 bits/pixel. Pictures showing the difference between the encodeddecoded pictures and the original pictures are presented. Results are also presented to illustrate the effect of channel errors on the reconstructed picture. A two-dimensional ADM using interframe encoding is also presented. This system operates at the rate of 2 bits/pixel and produces excellant quality pictures when there is little motion. We also describe and illustrate the effect of large amounts of motion on the reconstructed picture.

Published in:

Communications, IEEE Transactions on  (Volume:25 ,  Issue: 11 )