Title: Concurrent Computation of Differential Morphological Profiles on Giga-Pixel Remote Sensing Images
Authors: WILKINSON MichaelSOILLE PierrePESARESI MartinoOUZOUNIS GEORGIOS
Citation: Proceedings ICT.OPEN 2011 p. 199-204
Publisher: Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Publication Year: 2011
JRC N°: JRC66673
ISBN: 9789073461994
URI: http://link.springer.com/chapter/10.1007%2F978-3-642-21569-8_29#
http://publications.jrc.ec.europa.eu/repository/handle/JRC66673
Type: Articles in periodicals and books
Abstract: In this paper we provide an efficient parallel algorithm for reconstruction from markers, and multi-scale analysis through differential morphological profiles, which are top-hat scale spaces based on openings and closings by reconstruction. The new algorithms provide speed gain in two ways: (i) through parallelism, and (ii) through more efficient re-use of previously computed data. The best version of the algorithm provided a 17x speed-up on 24 cores, over computation of the same algorithm on a single core. Compared to the basic method of repeated reconstructions by a sequential algorithm, a speed gain of 25.1 times was obtained.
JRC Directorate:Space, Security and Migration

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