Modified fuzzy c-means applied to a Bragg grating-based spectral imager for material clustering

Aida Rodríguez; Juan Luis Nieves; Eva Valero; Estíbaliz Garrote; Javier Hernández-Andrés; Javier Romero

doi:10.1117/12.909081

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2 February 2012 Modified fuzzy c-means applied to a Bragg grating-based spectral imager for material clustering

Aida Rodríguez, Juan Luis Nieves, Eva Valero, Estíbaliz Garrote, Javier Hernández-Andrés, Javier Romero

Proceedings Volume 8300, Image Processing: Machine Vision Applications V; 83000J (2012) https://doi.org/10.1117/12.909081
Event: IS&T/SPIE Electronic Imaging, 2012, Burlingame, California, United States

Abstract

We have modified the Fuzzy C-Means algorithm for an application related to segmentation of hyperspectral images. Classical fuzzy c-means algorithm uses Euclidean distance for computing sample membership to each cluster. We have introduced a different distance metric, Spectral Similarity Value (SSV), in order to have a more convenient similarity measure for reflectance information. SSV distance metric considers both magnitude difference (by the use of Euclidean distance) and spectral shape (by the use of Pearson correlation). Experiments confirmed that the introduction of this metric improves the quality of hyperspectral image segmentation, creating spectrally more dense clusters and increasing the number of correctly classified pixels.

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Aida Rodríguez, Juan Luis Nieves, Eva Valero, Estíbaliz Garrote, Javier Hernández-Andrés, and Javier Romero "Modified fuzzy c-means applied to a Bragg grating-based spectral imager for material clustering", Proc. SPIE 8300, Image Processing: Machine Vision Applications V, 83000J (2 February 2012); https://doi.org/10.1117/12.909081

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