Diffusion geometric methods for fusion of remotely sensed data

James M. Murphy; Mauro Maggioni

doi:10.1117/12.2305274

8 May 2018 Diffusion geometric methods for fusion of remotely sensed data

James M. Murphy, Mauro Maggioni

Proceedings Volume 10644, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIV; 106440I (2018) https://doi.org/10.1117/12.2305274
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

Abstract

We propose a novel unsupervised learning algorithm that makes use of image fusion to efficiently cluster remote sensing data. Exploiting nonlinear structures in multimodal data, we devise a clustering algorithm based on a random walk in a fused feature space. Constructing the random walk on the fused space enforces that pixels are considered close only if they are close in both sensing modalities. The structure learned by this random walk is combined with density estimation to label all pixels. Spatial information may also be used to regularize the resulting clusterings. We compare the proposed method with several spectral methods for image fusion on both synthetic and real data.

Conference Presentation

Citation Download Citation

James M. Murphy and Mauro Maggioni "Diffusion geometric methods for fusion of remotely sensed data", Proc. SPIE 10644, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXIV, 106440I (8 May 2018); https://doi.org/10.1117/12.2305274

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