Building a Hyperspectral Library and its Incorporation into Sparse Unmixing for Mineral Identification

Thanh Bui, Simon B. Blancher, Ali Mohammad-Djafari, Henry Pilliere, Antanas Vaitkus, Yassine El Mendili, Daniel Chateigner, Mike Buxton, More Authors

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

The objective of the SOLSA project (EU-H2020) is to develop an analytical expert system for on-line-on-mine-real-time mineralogical and geochemical analyses on sonic drill cores. As one aspect of the system, this paper presents the building of the hyperspectral library and its incorporation into sparse unmixing techniques for mineral identification. Twenty seven spectra representing 14 minerals have been collected for the library. Three sparse unmixing techniques have been investigated and evaluated using simulated data generated from our hyperspectral library, and real hyperspectral data acquired from a serpentinized harzburgite sample. Among the three techniques, the collaborative sparse unmixing by variable splitting and augmented Lagrangian (CLSUnSAL) method provided the best accurate results on the simulated data. In addition, the results of the CLSUnSAL method show high correlation with that of the QEMSCAN® analysis on the harzburgite hyperspectral data.
Original languageEnglish
Title of host publicationIGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium
EditorsJose Moreno
PublisherIEEE
Pages2220-2223
Volume2018
ISBN (Electronic)978-1-5386-7150-4
ISBN (Print)978-1-5386-7151-1
DOIs
Publication statusPublished - 2018
EventIGARSS 2018: 2018 IEEE International Geoscience and Remote Sensing Symposium: Observing, Understanding And Forecasting The Dynamics Of Our Planet - Valencia, Spain
Duration: 22 Jul 201827 Jul 2018
Conference number: 38
https://www.igarss2018.org/

Conference

ConferenceIGARSS 2018: 2018 IEEE International Geoscience and Remote Sensing Symposium
Abbreviated titleIGARSS 2018
CountrySpain
CityValencia
Period22/07/1827/07/18
Internet address

Keywords

  • Hyperspectral library
  • sparse unmixing
  • shortwave infrared (SWIR)

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