Textural analysis and structure-tracking for geological mapping: applications to sonar images from endeavour segment, Juan de Fuca Ridge

Ph Blondel, J. C. Sempere, V. Robigou

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The volume of data collected by side-scan sonar during seafloor surveys has become larger and larger as the resolution of these systems has improved. As a result, new image processing techniques need to be developed to partly automate the interpretation of this increasing wealth of data. The first two steps in the geological analysis of a new image usually are the mapping of linear structures, and of morphologic units. These maps are then used in tectonic and geological interpretations. Linear features are detected by adaptive filtering. Their properties (length, direction, sinuosity, ...) are computed and quantified by the new structure tracking algorithm. Mapping of morphologic units is addressed by a textural analysis method, based on grey-level co-occurrence matrices. The authors have applied these techniques to high-resolution sonar images of the Endeavour Segment, Juan de Fuca Ridge. Separation of geologically meaningful regions can be easily attained using the authors' textural analysis method. Some regions fan be distinguished by numerical methods, whereas visual interpretation had to rely on supplementary data (photos, dives)

Original languageEnglish
Title of host publicationProceedings of OCEANS '93
Editors Anon
Number of pages6
ISBN (Print)0780313860, 0-7803-1385-2
Publication statusPublished - 1 Dec 1993
EventProceedings of the Conference on Oceans '93. Part 3 (of 3) - Victoria, BC, Can
Duration: 18 Oct 199321 Oct 1993


ConferenceProceedings of the Conference on Oceans '93. Part 3 (of 3)
CityVictoria, BC, Can

ASJC Scopus subject areas

  • Engineering(all)

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