Terahertz frequency modulated continuous wave imaging advanced data processing for art painting analysis

被引：53

作者：

Dandolo, Corinna L. Koch ^{[1
,2
]}

Guillet, Jean-Paul ^{[1
]}

Ma, Xue ^{[1
]}

Fauquet, Frederic ^{[1
]}

Roux, Marie ^{[3
]}

Mounaix, Patrick ^{[1
]}

机构：

[1] Univ Bordeaux, CNRS, IMS Lab, UMR 5218, 351 Cours Liberat, F-33405 Talence, France

[2] C2RMF, Palais Louvre Porte Lions 14, F-75001 Paris, France

[3] Latelier Renaissances, 1 Allee Gieu, F-33650 Saucats, France

来源：

OPTICS EXPRESS | 2018年 / 26卷 / 05期

基金：

瑞士国家科学基金会;

关键词：

Terahertz waves - Data handling - Frequency modulation;

D O I：

10.1364/OE.26.005358

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Reflection terahertz frequency modulated continuous waves scanner (300 GHz) has been proficiently optimized for imaging two easel paintings of different age. The information content of the obtained THz images has been fully inspected by selecting the appropriate THz image parameter. At the same time, a new data processing has been developed for improving the level of detail held by the axial parametric THz images by means of Gaussian fit of the reflected signals. By carefully weighting the reflected signals as a function of the optical path, the reflected amplitude has been corrected for the positioning of the object surface with respect to the beam focal point. The artifact affecting the THz images recorded from an uneven painting surface have been resolved and the obtained images fairly represent to the original painting. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：5358 / 5367

页数：10

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