Typical tiling approaches to segmentation of large images perform separated runs of a specific segmentation algorithm on tiles and then merge the results. However, specific post-processing is often required to remove possible artifacts on tiles junctions. In this paper, we aim at showing that a simple tiling strategy with partially overlapping tiles can be applied to a 2-nd order variational segmentation method based on the minimization of the Blake-Zisserman functional, in such a way that tile boundaries are coherent without any need of specific post-processing. Moreover, the energy minimization is performed on each tile with Dirichlet initial boundary conditions; thus, tiles are independent and the whole procedure is parallelizable with independent tiles.

A tiling procedure for second-order variational segmentation of large size remote sensing images / Zanetti, Massimo; Zanella, Riccardo; Bruzzone, Lorenzo. - ELETTRONICO. - (2016), pp. 6902-6905. (Intervento presentato al convegno IGARSS 2016 tenutosi a Beijing, China nel 10-15 July 2016) [10.1109/IGARSS.2016.7730801].

A tiling procedure for second-order variational segmentation of large size remote sensing images

Zanetti, Massimo;Bruzzone, Lorenzo
2016-01-01

Abstract

Typical tiling approaches to segmentation of large images perform separated runs of a specific segmentation algorithm on tiles and then merge the results. However, specific post-processing is often required to remove possible artifacts on tiles junctions. In this paper, we aim at showing that a simple tiling strategy with partially overlapping tiles can be applied to a 2-nd order variational segmentation method based on the minimization of the Blake-Zisserman functional, in such a way that tile boundaries are coherent without any need of specific post-processing. Moreover, the energy minimization is performed on each tile with Dirichlet initial boundary conditions; thus, tiles are independent and the whole procedure is parallelizable with independent tiles.
2016
2016 IEEE International Geoscience and Remote Sensing Symposium
Piscataway, NJ
IEEE
978-1-5090-3332-4
Zanetti, Massimo; Zanella, Riccardo; Bruzzone, Lorenzo
A tiling procedure for second-order variational segmentation of large size remote sensing images / Zanetti, Massimo; Zanella, Riccardo; Bruzzone, Lorenzo. - ELETTRONICO. - (2016), pp. 6902-6905. (Intervento presentato al convegno IGARSS 2016 tenutosi a Beijing, China nel 10-15 July 2016) [10.1109/IGARSS.2016.7730801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/156370
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