Performances of a portable Fourier transform hyperspectral imaging camera for rapid investigation of paintings

Abstract Scientific investigation in the cultural heritage field is generally aimed at characterization of constituent materials and conservation status artworks. Since 1990s, reflectance spectral imaging proved able to map pigments, reveal hidden details evaluate presence restorations paintings. Over past two decades, hyperspectral has further improved our understanding paints its changes time. In this work, we present an innovative camera, based on Fourier transform approach, utilising ultra-stable interferometer describe advantages drawbacks with respect commonly used line- spectral-scanning methods. To mitigate weaknesses imaging, propose a strategy virtual extension dynamic range camera design illumination system balanced emission throughout interest. The was employed for analysis painting from “Album Nasir al-din Shah”. By applying routines supervised unmixing, demonstrate effectiveness pigment mapping. This work shows how proposed promising technique robust compact situ artistic objects conditions compatible museum archaeological sites. Graphic abstract