Sub-Band Coding Of Digital Images Using Two-Dimensional Quadrature Mirror Filtering

H. Gharavi; Ali Tabatabai

doi:10.1117/12.937248

20 November 1986 Sub-Band Coding Of Digital Images Using Two-Dimensional Quadrature Mirror Filtering

H. Gharavi, Ali Tabatabai

Proceedings Volume 0707, Visual Communications and Image Processing; (1986) https://doi.org/10.1117/12.937248
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

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.

Citation Download Citation

H. Gharavi and Ali Tabatabai "Sub-Band Coding Of Digital Images Using Two-Dimensional Quadrature Mirror Filtering", Proc. SPIE 0707, Visual Communications and Image Processing, (20 November 1986); https://doi.org/10.1117/12.937248

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