Deciphering hidden layers images through terahertz spectral fingerprints

2025/05/29 by Moffa, Candida, Francescone, Daniele, Curcio, Alessandro +5 · 2 citations
#Applied Physics (physics.app-ph) #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Optics (physics.optics)

paper · doi:10.48550/arxiv.2505.23965

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.

Citations

• Terahertz imaging super-resolution for documental heritage diagnostics
• Goya's artwork imaging with Terahertz waves

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