A Tiling Procedure For Second-Order Variational Segmentation Of Large Size Remote Sensing Images
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)(2016)
摘要
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.
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关键词
Segmentation,tiling,Blake and Zis-serman functional,variational methods,remote sensing
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