Article
Archaeology
Costanza Cucci, Marcello Picollo, Lorenzo Stefani, Reyes Jimenez
Summary: Reflectance hyperspectral imaging is recognized as an effective technique for the examination of paintings. A new trend has emerged in some important museums worldwide towards the systematic use of reflectance HSI for analysis and documentation of painted surfaces. The paper focuses on the painting "The Blue Glass" by Picasso and highlights the use of high-performance reflectance HSI to visualize the artistic metamorphosis and hidden layers of the painting.
JOURNAL OF CULTURAL HERITAGE
(2023)
Review
Environmental Sciences
Juan C. Montes-Herrera, Emiliano Cimoli, Vonda Cummings, Nicole Hill, Arko Lucieer, Vanessa Lucieer
Summary: Monitoring marine ecosystems requires observations of attributes at different scales which traditional methods struggle to provide. Proximal optical sensing methods bridge this observational gap by tracking changes non-invasively. Underwater hyperspectral imaging shows potential for monitoring pigmentation and identifying minerals at small spatial scales.
Article
Computer Science, Information Systems
Shih-Yu Chen, Yu-Chih Cheng, Wen-Long Yang, Mei-Yun Wang
Summary: This study utilized hyperspectral imaging to detect surface defects on wet-blue leather and proposed the HLDDA algorithm. Through HTD and DL techniques, effective quantification and detection of different types of defects were successfully achieved, with clear classification and treatment of defect characteristics.
Article
Agriculture, Multidisciplinary
Jacopo Furlanetto, Nicola Dal Ferro, Daniele Caceffo, Francesco Morari
Summary: This study focused on the response of winter wheat to hail damage, and successfully developed an effective method for mapping hail damage in winter wheat by using unmanned aerial vehicle (UAV) measurements of spectral reflectance and related indices, combined with spectral mixture analysis and a newly designed multispectral index.
PRECISION AGRICULTURE
(2023)
Article
Multidisciplinary Sciences
Shai Kendler, Ziv Mano, Ran Aharoni, Raviv Raich, Barak Fishbain
Summary: The manuscript presents a machine-educating approach to improve the accuracy and generalization capabilities of machine learning. By equipping a machine with a physical model and providing it with an unlabeled dataset, the educated machine outperforms classical machines in resolving nonlinear mixing and identifying target materials.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Analytical
Guoxuan Liu, Huaidong Yang, Hansen Zhao, Yinxin Zhang, Sichun Zhang, Xinrong Zhang, Guofan Jin
Summary: The study developed hyperspectral SIM technology, enabling high-speed spectral super-resolution imaging in SIM for the first time. By optically mapping the three-dimensional datacube of the sample to the detector plane, it allows simultaneous detection and retention of sample spectrum information.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Lukas Krauz, Petr Pata, Jan Kaiser
Summary: This paper evaluates the spectral characteristics of dye- and pigment-based ink prints using visible near-infrared (VNIR) hyperspectral imaging, aiming to provide reliable techniques and mediums for long-term archiving.
Article
Humanities, Multidisciplinary
Haiqing Yang, Jianghua Ni, Chiwei Chen, Ying Chen
Summary: An intelligent assessment approach for classifying the weathering degree of building sandstone in a humid environment is proposed in this study. The approach includes microscopic observation, hyperspectral acquisition, and machine learning technology. The weathering process is divided into three stages: initial weathered stage, accelerated weathered stage, and stable weathered stage. A novel classification method based on the weathering stage is proposed, and a mapping relationship between microscopic characteristics and hyperspectral image is established. The Random Forest model is used to classify the spectral data of building sandstone with different weathering degrees, and the model is optimized for better performance using the Gray Wolf Optimizer algorithm. The trained model is applied for quantitative evaluation of the weathering degree of large-scale sandstone walls.
Article
Spectroscopy
M. Gonzalez-Cabrera, A. Dominguez-Vidal, M. J. Ayora-Canada
Summary: The potential of infrared hyperspectral microimages in investigating the alteration of organic binders in pictorial layers after artificial UV light ageing was explored. Different binders and pigments were analyzed, revealing significant trends and spectral features related to UV-induced ageing. The use of FTIR micro-images and PCA provided valuable insights into the complex and heterogeneous structure of paintings.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Applied
Fatemeh Sadat Hashemi-Nasab, Hadi Parastar
Summary: In this study, a method for saffron authentication and adulteration detection was proposed using visible-near infrared hyperspectral imaging (Vis-NIR-HSI) and a novel chemometric approach. The method achieved 100% classification accuracies for calibration and prediction sets, and successfully detected five common plant-derived adulterants. The proposed strategy showed 100% accuracies for both calibration and prediction sets when analyzing a mixed dataset. The model evaluation using data driven soft independent modelling of class analogy (DD-SIMCA) resulted in 95% sensitivity for authentic class and 100% specificity for all adulterants.
Article
Multidisciplinary Sciences
Binu Melit Devassy, Sony George
Summary: This paper explores the potential of hyperspectral imaging for detecting and analyzing beverage stains on paper towels, using SVM for classification and a convolutional auto-encoder for data dimensionality reduction. The study demonstrates the efficacy of HSI techniques for rapid, non-contact, and non-invasive analysis of beverage stains, showcasing the importance of documentation and analysis of crime scene evidences in forensic investigations.
SCIENTIFIC REPORTS
(2021)
Review
Chemistry, Analytical
Jan Jehlicka, Howell G. M. Edwards, Aharon Oren
Summary: This review discusses the application of Raman spectroscopy in studying violet and brown pigments produced by microorganisms. Raman spectroscopy is a widely appreciated analytical tool in the field of microbiology and chemistry, and its recent developments have opened up new possibilities for studying microbial colonization in natural geobiological systems.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Article
Plant Sciences
Alexei Solovchenko, Alexei Dorokhov, Boris Shurygin, Alexandr Nikolenko, Vitaly Velichko, Igor Smirnov, Dmitriy Khort, Aleksandr Aksenov, Andrey Kuzin
Summary: Recent technical progress has made it possible to obtain spatially resolved spectral information on plants using imaging hyperspectrometers (IH), but extracting meaningful information from hyperspectral images is challenging due to the inherent complexity of plant tissue and canopy optics.
Article
Chemistry, Analytical
Maheen Zulfiqar, Muhammad Ahmad, Ahmed Sohaib, Manuel Mazzara, Salvatore Distefano
Summary: This study introduces a non-destructive method for bloodstain identification using Hyperspectral Imaging technology, which outperformed several state-of-the-art methods after experimental validation using blood and non-blood samples.
Article
Physics, Multidisciplinary
Marta Ghirardello, Cristian Manzoni, Michele Gironda, Roberto Alberti, Roland Lenz, Judit Zoldfoldi, Sonja Behrendt, Boaz Paz, Gianluca Valentini, Daniela Comelli
Summary: The novel hyperspectral camera based on Fourier-transform approach is utilized to study the photoluminescence emission from artworks at different spatial scales and emission timescales. It allows in-depth characterization of luminescent materials in cultural heritage, separation of emission from different materials, and provides vital information for material identification and mapping. The high spectral accuracy of the camera enables the collection of highly resolved spectral datacubes, which can be further analyzed with computational and multivariate statistical methods for better material identification and mapping.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Review
Chemistry, Analytical
A. Limbeck, L. Brunnbauer, H. Lohninger, P. Porizka, P. Modlitbova, J. Kaiser, P. Janovszky, A. Keri, G. Galbacs
Summary: LIBS has become an established technique for assessing elemental concentrations in various sample types, with a growing interest in elemental imaging studies. Detailed information about elemental distribution within heterogeneous samples is important, and the high speed of analysis and lack of sample preparation make LIBS particularly attractive.
ANALYTICA CHIMICA ACTA
(2021)
Article
Spectroscopy
M. Gonzalez-Cabrera, A. Dominguez-Vidal, M. J. Ayora-Canada
Summary: The potential of infrared hyperspectral microimages in investigating the alteration of organic binders in pictorial layers after artificial UV light ageing was explored. Different binders and pigments were analyzed, revealing significant trends and spectral features related to UV-induced ageing. The use of FTIR micro-images and PCA provided valuable insights into the complex and heterogeneous structure of paintings.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Crystallography
Paz Arjonilla, Maria Jose Ayora-Canada, Maria Jose de la Torre-Lopez, Elena Correa Gomez, Ramon Rubio Domene, Ana Dominguez-Vidal
Summary: The Alhambra Monumental Ensemble is a well-preserved palatine city from the medieval Islamic period, showcasing Nasrid architecture. The study focuses on the unknown decorations of wall paintings with faux-brick appearance, using non-invasive methodologies to analyze materials, execution techniques, and conservation states. The red brick decorations were primarily painted with hematite pigment over a white lime mortar layer, with gypsum-based techniques observed in one indoor location.
Article
Biochemistry & Molecular Biology
Paz Arjonilla, Ana Dominguez-Vidal, Ramon Rubio Domene, Elena Correa Gomez, Maria Jose de la Torre-Lopez, Maria Jose Ayora-Canada
Summary: Non-invasive techniques were used to study Hispano Muslim wall paintings, revealing differences and similarities among measurement points and providing insights into past interventions and plaster deterioration. The study's representativeness was also validated.
Article
Chemistry, Analytical
Marta P. Rueda, Francisco Comino, Victor Aranda, Ana Dominguez-Vidal, Maria Jose Ayora-Canada
Summary: Composting is an interesting solution for recycling waste generated in olive oil production. The composition and proportion of different materials used in composting affect the quality and stability of the compost. Therefore, comprehensive characterization of compost organic matter is important for understanding its stability, maturity, and behavior as a soil amendment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Environmental Sciences
Pavel Porizka, Lukas Brunnbauer, Michaela Porkert, Ula Rozman, Gregor Marolt, Daniel Holub, Martin Kizovsky, Marketa Benesova, Ota Samek, Andreas Limbeck, Jozef Kaiser, Gabriela Kalcikova
Summary: This study used laser-based analytical techniques to detect, characterize, and classify microplastics covered with biofilm. LIBS was able to identify different types of plastics, while LA-ICP-MS showed high sensitivity to metals, which can be used as markers for plastics.
Review
Chemistry, Analytical
L. Brunnbauer, Z. Gajarska, H. Lohninger, A. Limbeck
Summary: LIBS-based classification has attracted increasing interest in recent years. LIBS is a suitable technique for classification tasks based on elemental fingerprinting, providing fast simultaneous multi-element analysis with stand-off, online, and portable capabilities. However, the use of classification algorithms as black boxes hinders their adequate application, especially for non-data scientists. This review comprehensively introduces the steps and principles of achieving a well-performing classifier from recorded LIBS data, and discusses the advantages, limitations, and diversity of machine learning algorithms used in LIBS-classification literature.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Spectroscopy
Marta P. Rueda, Francisco Comino, Victor Aranda, Maria Jose Ayora-Canada, Ana Dominguez-Vidal
Summary: Composting olive mill pomace (OMP) can effectively manage waste in the olive oil industry. This study found that torrefaction, a thermal treatment, can improve the characteristics of OMP compost as a soil amendment. The chemical changes occurring during torrefaction were analyzed using spectroscopy, and it was discovered that higher temperatures led to a decrease in H/C and O/C atomic ratios, indicating coalification of organic matter.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Jakob Willner, Lukas Brunnbauer, C. Derrick Quarles, Michael Nelhiebel, Silvia Larisegger, Andreas Limbeck
Summary: This study developed and optimized simultaneous 193 nm LA-ICP-MS & LIBS methods for spatially resolved analysis of polymer thin films. The methods were used to investigate polymer ageing and degradation in harsh environments. The results revealed spatially resolved information on oxidation behavior, sulfur diffusion profiles, and the influence of UV treatment on sulfur uptake in the films.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)