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Proceedings Paper

Texture mapping of volcanic lava flows based on zero-crossing information from GSF filtering and a local feature statistics operator
Author(s): Duncan J. Telfer; Keith O. Pritchard; Lionel Wilson
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Paper Abstract

The information contained in the slopes and locations of zero-crossing points for band-limited images of the Lonquimay complex allows mapping of texture features. The band limited images are derived and processed in two different ways: GSF filtering leads to maps of zero- crossing density, which is associated with response to periodic structure, and a spatial filtering approach based on local feature statistics yields maps of surface roughness. The sources of these textural properties, particularly surface ridges and folds, are related to the physical characteristics and history of the lava flows and are also influenced by the underlying surface topography.

Paper Details

Date Published: 15 October 1993
PDF: 8 pages
Proc. SPIE 1943, State-of-the-Art Mapping, (15 October 1993); doi: 10.1117/12.157132
Show Author Affiliations
Duncan J. Telfer, Univ. of Central Lancashire (United Kingdom)
Keith O. Pritchard, Univ. of Central Lancashire (United Kingdom)
Lionel Wilson, Lancashire Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 1943:
State-of-the-Art Mapping
Bill P. Clark; Andy Douglas; Bryan L. Foley; Brian Huberty; LeLand D. Whitmill, Editor(s)

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