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Proceedings Paper

Sub-Band Coding Of Digital Images Using Two-Dimensional Quadrature Mirror Filtering
Author(s): H. Gharavi; Ali Tabatabai
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Paper Abstract

Computer simulation results of sub-band coding of digital images using Quadrature Mirror Filtering (QMF) techniqueb are reported. Conditions specifying two-dimensional QMF design constraints are derived. The spectrum of the input signal is then decomposed non-uniformly into sub-band images. In the coding process, the lowest band is DPCM coded using a two-dimensional prediction scheme. The remaining bands are PCM coded by a quantizer which minimizes the perceived distortion of the reconstructed signal. The results are then presented in terms of subjective quality of the reconstructed pictures, SNR, and the resulting bit rate.

Paper Details

Date Published: 20 November 1986
PDF: 13 pages
Proc. SPIE 0707, Visual Communications and Image Processing, (20 November 1986); doi: 10.1117/12.937248
Show Author Affiliations
H. Gharavi, Bell Communications Research, Inc. (United States)
Ali Tabatabai, Bell Communications Research, Inc. (United States)


Published in SPIE Proceedings Vol. 0707:
Visual Communications and Image Processing
T. Russell Hsing, Editor(s)

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