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Pre-attentive segmentation of oriented textures

Ingrid Machecler1,2 and Jean-Pierre Nadal2

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The interpretation of geophysical data, such as images of subsurface rocks (seismic data, borehole scans), requires one in particular to perform an elaborate segmentation analysis on strongly textured, anisotropic, and not necessarily brightness-contrasted images. In this paper we explore the possibility of deriving new segmentation algorithms from recent advances in the neural modelling of pre-attentive segmentation in human vision. More specifically we consider a neural model proposed by Zhaoping Li. First, we reproduce some specific results obtained by Zhaoping Li on simple artificial and real images sharing some textural characteristics with geophysical data. Next, from the analysis of the model behaviour, we propose an image processing workflow depending on the textural characteristics and on the type of segmentation (contour enhancement or texture edge detection) one is interested in. With this algorithm one gets promising results: from the computation of a single attribute one extracts the oriented textured feature boundaries without prior classification.


Footnote
*  Laboratory associated with CNRS, ENS and Universities Paris 6 and Paris 7.
PACS

93.85.-q Instruments and techniques for geophysical research: Exploration geophysics

93.85.Bc Computational methods and data processing, data acquisition and storage

91.30.-f Seismology

Subjects

Instrumentation and measurement

Environmental and Earth science

Dates

Issue 4 (December 2004)

Received 20 July 2004, accepted for publication 21 October 2004

Published 22 November 2004



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