Xpectraltek Graphic Documents Unfolded With the XpeCAM X01 Solution ICARUS-Meeting #20 | The Age of Digital Technology: Documents, Archives and Society 23–25 October 2017, Complutense University Madrid, Calle del Prof. Aranguren, 28040 Madrid, Spain

1. 5th of October, Gotemburgo
Spectral Imaging Theory and Applications
in Cultural Heritage
1
António Cardoso
Co-Founder

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Light is our tool!
2

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Pigment traces Enhancement (UV Reflection)
Ultraviolet reflectionVisible reflection

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Pigment Traces Enhancement (Visible
Reflection)

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Pigment traces Enhancement (IR Reflection)
1º Edition “Mensagem” F. Pessoa
IR reflectionVisible reflection

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Pigment Analysis
Reflectance spectra of Dark Pigments
0
50
100
150
200
250
350 550 750 950 1150
Wavelength nm
ReflectedLight
Dark pigment in the eye
0
50
100
150
200
250
350 550 750 950 1150
Wavelength nm
ReflectedLight
Dark pigment in the nose
Color Image
400 nm
950 nm750 nm 800 nm
675 nm450 nm 500 nm
1100 nm 1200 nm

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False colour image
Censoring ink
Old pigment
Visible image
Differentiating Inks (Principal Component Analysis)

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Hardware Specifications
• Sensor: CMOS Monochrome
• Spectral Sensitivity: 350-1200nm
• Spectral Bands: 30
• Spatial resolution: 5M pixels
• Sensor lens: C-Mount type (exchangeable)
• Connections: USB3.0
Multi-spectral imaging

9. 5th of October, Gotemburgo
www.xpectraltek.com - info@xpectraltek.com
Thank you for your attention!