Image-based measurements of degree of saturation

被引：0
|
作者：
Parera, Ferran [1 ,2 ]
Pinyol, Nuria M. [1 ,2 ]
Alonso, Eduardo [1 ,2 ]
机构：
[1] Ctr Metodes Numer Engn CIMNE, Barcelona, Spain
[2] Univ Politecn Cataluny UPC, Dept Civil & Environm Engn, Barcelona, Spain
来源：
4TH EUROPEAN CONFERENCE ON UNSATURATED SOILS (E-UNSAT 2020) | 2020年 / 195卷
关键词：
D O I：
10.1051/e3sconf/202019503010
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A method based on SWIR images is proposed for measuring the degree of saturation in soils. This method is especially suitable for use in experiments conducted in the facilities of a common geotechnical laboratory. The method uses images on the short-wave infrared (SWIR) (wavelength: 14001550 nm), which is highly absorbed by water compared with the other bands of the light spectrum (visible and near-infrared). The paper presents the basis of the method and the procedure to measure the degree of saturation in a massive and non-invasive way. A relation curve to transform the pixel intensity values to the degree of saturation is provided for samples of a beach sand. The non-linearity of this curve is discussed and related to the optical path length.
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页数：4
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