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|Title:||Concurrent Computation of Differential Morphological Profiles on Giga-Pixel Remote Sensing Images|
|Authors:||WILKINSON Michael; SOILLE Pierre; PESARESI Martino; OUZOUNIS GEORGIOS|
|Citation:||Proceedings ICT.OPEN 2011 p. 199-204|
|Publisher:||Nederlandse Organisatie voor Wetenschappelijk Onderzoek|
|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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