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Object-based classification from high resolution satellite image time series with Gaussian mean map kernels: Application to grassland management practices

Maïlys Lopes 1 Mathieu Fauvel 1 Stéphane Girard 2 David Sheeren 1
2 MISTIS - Modelling and Inference of Complex and Structured Stochastic Systems
Inria Grenoble - Rhône-Alpes, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology, LJK - Laboratoire Jean Kuntzmann
Abstract : This paper deals with the classification of grassland management practices using high resolution satellite image time series. Grasslands considered in this work are semi-natural elements in fragmented landscapes, i.e., they are heterogeneous and small elements. The first contribution of this study is to account for grassland heterogeneity while working at the object scale by modeling its pixels distributions by a Gaussian distribution. To measure the similarity between two grasslands, a Gaussian mean map kernel is proposed as a second contribution: the α-Gaussian mean kernel. It allows to weight the influence of the covariance matrix when comparing two grasslands. This kernel is used in Support Vector Machine for the supervised classification of three management practice types in 52 grasslands from southwest France, using an intra-annual multispectral time series of Formosat-2 satellite. Results in terms of classification accuracy and processing time are compared to other pixel-and object-based approaches. The proposed modeling showed to be the best compromise between processing speed and classification accuracy. It can adapt to the classification constraints and it encompasses several similarity measures known in the literature.
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Preprints, Working Papers, ...
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https://hal.inria.fr/hal-01424929
Contributor : Stephane Girard <>
Submitted on : Tuesday, January 3, 2017 - 10:19:04 AM
Last modification on : Thursday, November 19, 2020 - 1:04:02 PM
Long-term archiving on: : Tuesday, April 4, 2017 - 1:11:12 PM

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  • HAL Id : hal-01424929, version 1

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Maïlys Lopes, Mathieu Fauvel, Stéphane Girard, David Sheeren. Object-based classification from high resolution satellite image time series with Gaussian mean map kernels: Application to grassland management practices. 2017. ⟨hal-01424929v1⟩

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