Deciphering hidden layers images through terahertz spectral fingerprints
Optics
2025-08-27 v1 Applied Physics
Instrumentation and Detectors
Abstract
Terahertz radiation enables non destructive, depthresolved analysis of layered artworks. This study demonstrates THz multispectral imaging ability to reveal concealed text beneath mockup of pictorial layers, reconstructing hidden narratives at varying depths through frequency domain analysis.Simultaneously, it maps pigment composition, providing valuable chemical information. Showcasing the power to penetrate and decipher stratified materials, this work establishes THz multispectral imaging as a crucial tool for unlocking hidden secrets and characterizing materials in Cultural Heritage artifacts.
Keywords
Cite
@article{arxiv.2505.23965,
title = {Deciphering hidden layers images through terahertz spectral fingerprints},
author = {Candida Moffa and Daniele Francescone and Alessandro Curcio and Anna Candida Felici and Marco Bellaveglia and Luca Piersanti and Mauro Migliorati and Massimo Petrarca},
journal= {arXiv preprint arXiv:2505.23965},
year = {2025}
}