scholarly journals Fourier Transform Hyperspectral Imaging for Cultural Heritage

10.5772/66107 ◽  
2017 ◽  
Author(s):  
Massimo Zucco ◽  
Marco Pisani ◽  
Tiziana Cavaleri
Keyword(s):  
Fourier Transform ◽  
Cultural Heritage ◽  
Hyperspectral Imaging

scholarly journals Evaluation of Cleaning Processes Using Colorimetric and Spectral Data for the Removal of Layers of Limewash from Medieval Plasterwork

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7147
Author(s):  
Miguel Ángel Martínez-Domingo ◽  
Ana Isabel Calero Castillo ◽  
Eva Vivar García ◽  
Eva M. Valero
Keyword(s):  
Cultural Heritage ◽  
Hyperspectral Imaging ◽  
Color Difference ◽  
Cleaning Process ◽  
Heritage Preservation ◽  
The Mean ◽  
Cultural Heritage Preservation ◽  
Conservation Interventions

In the cultural heritage preservation of medieval buildings, it is common to find plaster walls covered in lime, which previously were painted in polychromy. The conservation interventions usually try to remove the whitewash, whilst maintaining the original color of the painted wall as much as possible. However, there is no agreement on which cleaning technique best preserves the original appearance of the colored plaster. Different pigments found below the lime layer may behave differently depending on the cleaning technique used. Usually, colorimetric or photometric area-based measurements are carried out to study the color of the cleaned areas to compare with their original color, obtained from pre-made plaster probes. However, this methodology fails when the mean color difference is not enough to fully characterize the changes in texture and color appearance. This study presents a set of experiments carried out using two different pigments (cinnabar and malachite) covered with lime, and treated with nine different cleaning techniques on plaster probes prepared according to medieval techniques. We have studied the effect of the cleaning process on the color and the homogeneity of the samples using a hyperspectral imaging workflow. Four different analysis methods are presented and discussed. Our results show that the proposed analysis is able to provide a much more comprehensive and diversified characterization of the quality of the cleaning method compared to the commonly used colorimetric or photometric area-based measurements.

scholarly journals Hyperspectral Imaging System Calibration Using Image Translations and Fourier Transform

2008 ◽  
Vol 16 (4) ◽  
pp. 371-380 ◽  
Author(s):  
Nathalie Gorretta ◽  
Gilles Rabatel ◽  
Jean-Michel Roger ◽  
Christophe Fiorio ◽  
Camille Lelong ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Hyperspectral Imaging ◽  
Imaging System ◽  
System Calibration

Development of Abel's inversion method to extract radially resolved optical emission maps from spectral data cubes collected via push-broom hyperspectral imaging with sub-pixel shifting sampling

2020 ◽  
Vol 35 (1) ◽  
pp. 117-125 ◽  
Author(s):  
Songyue Shi ◽  
Kevin Finch ◽  
Yue She ◽  
Gerardo Gamez
Keyword(s):  
Fourier Transform ◽  
Spectral Data ◽  
Hyperspectral Imaging ◽  
Plasma Diagnostics ◽  
Optical Emission ◽  
Inversion Method ◽  
High Fidelity ◽  
Inversion Algorithm ◽  
Data Cubes ◽  
First Time

The optimization of a Fourier transform-based Abel's inversion algorithm allows the reconstruction of high-fidelity radially resolved OES images from SPS-PbHSI acquisition for plasma diagnostics for the first time.

Monitoring the biochemical alterations in hypertension affected salivary gland tissues using Fourier transform infrared hyperspectral imaging

The Analyst ◽  
2017 ◽  
Vol 142 (8) ◽  
pp. 1269-1275 ◽  
Author(s):  
Shaiju S. Nazeer ◽  
Rarinthorn Samrid ◽  
David Perez-Guaita ◽  
Parichat Prachaney ◽  
Kowit Chaisiwamongkol ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Salivary Gland ◽  
Salivary Glands ◽  
Hyperspectral Imaging ◽  
Fourier Transform Infrared ◽  
Hypertensive Rats ◽  
Ftir Imaging ◽  
Biochemical Alterations

FTIR imaging shows biochemical differences between salivary glands from control and hypertensive rats.

Hyperspectral imaging Fourier transform spectrometers for astronomical and remote sensing observations

1994 ◽  
Author(s):  
Bruce Rafert ◽  
R. Glenn Sellar ◽  
Eirik Holbert ◽  
Joel H. Blatt ◽  
David W. Tyler ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Fourier Transform ◽  
Hyperspectral Imaging
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