Pedogenic hematitic concretions from the Triassic New Haven Arkose, Connecticut, Implications for understanding Martian diagenetic processes
By: J.H. Wilson, S.M. McLennan, T.D. Glotch, E.T. Rasbury, E.H. Gierlowski-Kordesch, R.V. Tappero
Abstract
We examine pedogenic sedimentary concretions from the New Haven Arkose. We use spectroscopic and geochemical methods to characterize the concretions. New Haven concretions consist of ~ 20% hematite, quartz, goethite and montmorillonite. Differences from other concretions are a negative Ce anomaly and lack of abundant Mn. New Haven concretions possess a pattern of Ni enrichment, similar to the Martian “blueberries.”
Performance & Feasibility of Drone-Mounted Imaging Spectroscopy for Invasive Aquatic Vegetation Detection
By: Erik A. Bolch, Erin L. Hestir, Shruti Khanna
Abstract
Invasive plants are non-native species that can spread rapidly, leading to detrimental economic, ecological, or environmental impact. In aquatic systems such as the Sacramento-San Joaquin River Delta in California, USA, management agencies use manned aerial vehicles (MAV) imaging spectroscopy missions to map and track annual changes in invasive aquatic plants. Advances in unmanned aerial vehicles (UAV) and sensor miniaturization are enabling higher spatial resolution species mapping, which is promising for early detection of invasions before they spread over larger areas.
Photon migration of Raman signal in bone as measured with spatially offset Raman spectroscopy
By: Kay Sowoidnich, John H. Churchwell, Kevin Buckley, Allen E. Goodship, Anthony W. Parker, Pavel Matousek
Abstract
Spatially offset Raman spectroscopy (SORS) is currently being developed as an in vivo tool for bone disease detection, but to date, information about the interrogated volume as influenced by the light propagation and scattering characteristics of the bone matrix is still limited. This paper seeks to develop our general understanding of the sampling depths of SORS in bone specimens as a function of the applied spatial offset.
Potential of in-field Vis/NIR hyperspectral imaging to monitor quality parameters of alfalfa
By: Chiara Cevol, Luca Di Cecilia, Luca Ferrari, Angelo Fabbri, Giovanni Molari
Abstract
The aim of this study was to evaluate the potentiality of the in-field Vis/NIR hyperspectral imaging combined with chemometric to predict moisture content of alfalfa after conditioning. Several combinations of conditioning level, time of day (morning and afternoon), and time after the conditioning (0, 15 and 120 min) were considered to carry out hyperspectral acquisitions.
Predicting intramuscular fat content of pork using hyperspectral imaging
By: L. Liu, M.O. Ngadi
Abstract
Intramuscular fat (IMF) content is an important quality trait of pork. It influences taste, juiciness and tenderness of the meat. The aim of this study was to develop an objective, rapid, and non-destructive method for predicting the IMF content of pork using hyperspectral imaging technology.
Predicting Water Stress in Wild Blueberry Fields Using Airborne Visible and Near Infrared Imaging Spectroscopy
By: Catherine Chan, Peter R. Nelson, Daniel J. Hayes, Yong-Jiang Zhang, Bruce Hall
Abstract
We assessed airborne spectral data accompanied by ground sampled water potential over three developmental stages of wild blueberries collected throughout the 2019 summer on two adjacent fields, one irrigated and one non-irrigated. Ground sampled leaves were collected in tandem to the hyperspectral image collection with an unoccupied aerial vehicle (UAV) and then measured for leaf water potential.
Quality Control of Slot-Die Coated Aluminum Oxide Layers for Battery Applications Using Hyperspectral Imaging
By: Florian Gruber, Philipp Wollmann, Benjamin Schumm, Wulf Grählert, Stefan Kaskel
Abstract
Hyperspectral inspection using imaging systems is becoming more and more important for quality control tasks in several industries, replacing well trained operators or established machine vision systems based on RGB-systems.
Radio-frequency and optical techniques for evaluating anchovy freshness
By: Eleonora Iaccheri, Chiara Cevoli, Leonardo Franceschelli, Marco Tartagni, Luigi Ragni, Annachiara Berardinelli
Abstract
The freshness of anchovies (Engraulis Encrasicolus) was estimated by radio-frequency and optical techniques in order to propose non-destructive and objective methods for rapid screening. Measurements were conducted until 7 days at 0 °C, storing the fish under ice. Image analysis, dielectric spectroscopy and hyperspectral images were conducted on fish eyes whilst mechanical properties were measured on the fish body.
Recent Developments in Hyperspectral Imaging for Assessment of Food Quality and Safety
By: Hui Huang, Li Liu, Michael O. Ngadi
Abstract
This paper provides a comprehensive review on the recent development of hyperspectral imaging applications in food and food products.
Reflectance Imaging Spectroscopy for Operation Night Watch Rembrandt’s Masterpiece
By: Francesca Gabrieli, John K. Delaney, Robert G. Erdmann, Victor Gonzalez, Annelies van Loon, Patrick Smulders, Roy Berkeveld, Robert van Langh, Katrien Keune
Abstract
The large size of the painting (3.78 m by 4.53 m) and the diversity of the technical investigations being performed make Operation Night Watch the largest research project ever undertaken at the Rijksmuseum. To construct a complete reflectance image cube at a high spatial resolution (168 µm2) and spectral resolution (2.54 to 6 nm), the painting was imaged with two high-sensitivity line scanning hyperspectral cameras (VNIR 400 to 1000 nm, 2.54 nm, and SWIR 900 to 2500 nm, 6 nm).
