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Proceedings Paper

Pyramid Coding Of Images Using Visual Criterion
Author(s): R. P. Rao; W. A. Pearlman
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Paper Abstract

An image pyramid incorporating properties of the human visual system is developed and is used for compressing images. Generation of the pyramid is done in two stages: in the first stage quadrature mirror filters (QMFs) are used to decompose the image; in the second stage directional "dome" filters are applied to the subbands generated by the QMFs. The dome filter is designed such that its impulse response function resembles the receptive field of the human cortical cell. Perfect reconstruction is possible by simply interpolating, filtering and adding the various subbands. Optimal quantization of the oriented pyramid components is done based on sensitivity of the visual system. Simulation results are presented for the "lena" image.

Paper Details

Date Published: 1 November 1989
PDF: 10 pages
Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); doi: 10.1117/12.970136
Show Author Affiliations
R. P. Rao, Rensselaer Polytechnic Institute (United States)
W. A. Pearlman, Rensselaer Polytechnic Institute (United States)

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

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