Share Email Print

Proceedings Paper

An Interframe Coding Scheme for Packet Video
Author(s): A. Puri; R. Aravind
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Interframe coding schemes though sensitive to the propagative affects of channel-errors, are much more efficient than intraframe coding schemes, when using similar data-compression techniques. Moreover, since in interframe coding, the instantaneous data-rate may vary drastically, it can benefit from the bits-on-demand property of packet-networks. We propose a layered coding-structure that contains a self-contained basic inter-frame codec as the core, and supplementary additive extended-codecs. The inter-frame codec uses a slightly modified version of motion-compensated DCT coding scheme proposed by the CCITT in reference model 8 for pX64kbit/ s videophone. It encodes the lower spatial resolution image sequence, with an adequate temporal resolution. The encoded-data it produces is assigned the highest priority. The extended-codecs allow enhancement of temporal and spatial resolutions, at the cost of increase in the data-rate. They encode the interpolative differences between the upsampled local decoded output of the basic-codec and the higher resolution input. The encoded-data of the extended codecs is assigned lower priority.

Paper Details

Date Published: 1 November 1989
PDF: 10 pages
Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); doi: 10.1117/12.970171
Show Author Affiliations
A. Puri, AT&T Bell Laboratories (United States)
R. Aravind, AT&T Bell Laboratories (United States)

Published in SPIE Proceedings Vol. 1199:
Visual Communications and Image Processing IV
William A. Pearlman, Editor(s)

© SPIE. Terms of Use
Back to Top