In Proceedings of Eurographics Workshop on Graphics and Cultural Heritage

Visual Analysis of RIS Data for Endmember Selection

Thomas Kroes, Thomas Höllt, Elmar Eisemann, Matthias Alfeld, Francesca Gabrieli, Anna Krekeler, Andra Popa, and Boudewijn P. F. Lelieveldt

Publisher Paper Cite More

Reflectance Imaging Spectroscopy (RIS) is a hyperspectral imaging technique used for investigating the molecular composition of materials. It can help identify pigments used in a painting, which are relevant information for art conservation and history. For every scanned pixel, a reflectance spectrum is obtained and domain experts look for pure representative spectra, called endmembers, which could indicate the presence of particular pigments. However, the identification of endmembers can be a lengthy process, which requires domain experts to manually select pixels and visually inspect multiple spectra in order to find accurate endmembers that belong to the historical context of an investigated painting. We propose an integrated interactive visual-analysis workflow, that combines dimensionality reduction and linked visualizations to identify and inspect endmembers. Here, we present initial results, obtained in collaboration with domain experts.

More Information

Citation

BibTex

@inproceedings{bib:kroes:2022,
    author       = { Kroes, Thomas and Höllt, Thomas and Eisemann, Elmar and Alfeld, Matthias and Gabrieli, Francesca and Krekeler, Anna and Popa, Andra and Lelieveldt, Boudewijn P. F. },    
    title        = { Visual Analysis of RIS Data for Endmember Selection },
    booktitle    = { In Proceedings of Eurographics Workshop on Graphics and Cultural Heritage },
    year         = { 2022 },
    publisher    = { Eurographics },
    doi          = { 10.2312/gch.20221233 },
    dblp         = { conf/vast/PopaGKKALEH22 },
    url          = { https://publications.graphics.tudelft.nl/papers/61 },
}