@article{10.1371/journal.pone.0303018,
    doi = {10.1371/journal.pone.0303018},
    author = {Grillini, Federico AND Aksas, Lyes AND Lapray, Pierre-Jean AND Foulonneau, Alban AND Thomas, Jean-Baptiste AND George, Sony AND Bigué, Laurent},
    journal = {PLOS ONE},
    publisher = {Public Library of Science},
    title = {Relationship between reflectance and degree of polarization in the VNIR-SWIR: A case study on art paintings with polarimetric reflectance imaging spectroscopy},
    year = {2024},
    month = {05},
    volume = {19},
    url = {https://doi.org/10.1371/journal.pone.0303018},
    pages = {1-21},
    abstract = {We study the relationship between reflectance and the degree of linear polarization of radiation that bounces off the surface of an unvarnished oil painting. We design a VNIR-SWIR (400 nm to 2500 nm) polarimetric reflectance imaging spectroscopy setup that deploys unpolarized light and allows us to estimate the Stokes vector at the pixel level. We observe a strong negative correlation between the S0 component of the Stokes vector (which can be used to represent the reflectance) and the degree of linear polarization in the visible interval (average -0.81), while the correlation is weaker and varying in the infrared range (average -0.50 in the NIR range between 780 and 1500 nm, and average -0.87 in the SWIR range between 1500 and 2500 nm). By tackling the problem with multi-resolution image analysis, we observe a dependence of the correlation on the local complexity of the surface. Indeed, we observe a general trend that strengthens the negative correlation for the effect of artificial flattening provoked by low image resolutions.},
    number = {5},

}