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Proceedings Paper

Comparison of directionally based and nondirectionally based subband image coders
Author(s): Roberto H. Bamberger; Mark J. T. Smith
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Paper Abstract

Many different types of analysis/synthesis decompositions have been investigated for image coding. Some, like those used in traditional transform, pyramid, and subband coders, partition the spatial-frequency spectrum into symmetric bands, i.e., the bands occupy a disjoint region in each of the four frequency plane quadrants [1, 2, 3, 4]. Others have examined related systems that use directionally-based decompositions [5, 6, 7, 8] in which diagonally oriented spatial frequency components are coded. However, the directional resolution in these schemes is often very limited. In this paper, some new exactly reconstructing subband decompositions are presented with directional selectivity. They are examined in the context of subband image coding and compared to directionally invariant subband decompositions in terms of subjective quality.

Paper Details

Date Published: 1 November 1991
PDF: 12 pages
Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); doi: 10.1117/12.50224
Show Author Affiliations
Roberto H. Bamberger, Washington State Univ. (United States)
Mark J. T. Smith, Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 1605:
Visual Communications and Image Processing '91: Visual Communication
Kou-Hu Tzou; Toshio Koga, Editor(s)

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