29/03/2024
Thermal Infrared Hyperspectral Imaging for Methane Detection at Landfills - Webinar Methane emissions from biomass degradation at landfills are a significant contributor to environmental pollution and anthropogenic climate change. Methane is among the most infrared-active naturally occurring molecules and represents an 80X increase in atmospheric warming potency when compared to CO2. The need for reliable and cost-efficient methane detection technology is critical to mitigatin...
Movies
29/03/2024
The Advantage of High Spatial Resolution in Thermal ImagingTelops Scientific Product Line Manager Ben Saute describes the fundamentals and benefits of high spatial resolution imaging and introduces the newly redesigned FAST HD series representing the cutting-edge in high-resolution scientific thermal imaging.
Movies
29/03/2024
Object Tracking by Hierarchical Decomposition of Hyperspectral Video Sequences: Application to Chemical Gas Plume Tracking It is now possible to collect hyperspectral video sequences at a near real-time frame rate. The wealth of spectral, spatial, and temporal information of those sequences is appealing for various applications, but classical video processing techniques must be adapted to handle the high dimensionality and huge size of the data to process. In this paper, we introduce a novel method based on the hie...
Papers
2.52 Mo
29/03/2024
Comparison Assessment of Low Rank Sparse-PCA Based – Clustering The developments in hyperspectral technology in different applications are known in many fields particularly in remote sensing, airborne imagery, mineral identi- fication and core logging. The automatic mineral identification system provides considerable assistance in geology to identify mineral automatically. Here, the proposed approach addresses an automated system for mineral (i.e. pyrope, o...
Papers
12.66 Mo
29/03/2024
Continuum Removal for Ground Based LWIR Hyperspectral Infrared Imagery Applying Non-Negative Matrix Factorization Continuum removal is vital in hyperspectral image analysis. It enables data to be used for any application and usually requires approximations or assumptions to be made. One of these approximations is related to the calculation of the spectra of the background’s blackbody temperature. Here, we present a new method to calculate the continuum removal process. The proposed method eliminates the ca...
Papers
3.63 Mo
29/03/2024
Thermal Infrared Hyperspectral Imaging for Mineralogy Mapping of a Mine Face Remote sensing systems are largely used in geology for regional mapping of mineralogy and lithology mainly from airborne or spaceborne platforms. Earth observers such as Landsat, ASTER or SPOT are equipped with multispectral sensors, but suffer from relatively poor spectral resolution. By comparison, the existing airborne and spaceborne hyperspectral systems are capable of acquiring imagery fro...
Papers
3.7 Mo
29/03/2024
New Zealand field-scale fire experiments to test convective heat transfer in wildland fires Wildfire physics has traditionally been studied through intensive modelling that requires numerous assumptions of combustion and heat transfer (Sullivan 2009) adapted from established structure-fire engineering relations. Renewed emphasis in experimental research has caused rethinking of some of the most basic concepts in wildland fuel particle ignition and flame spread. New findings from labor...
Papers
1019.09 Ko
29/03/2024
Rate dependency and ply thickness influence on transverse cracking evolution in cross-ply laminates F. Coussa, J. Berthe, M. Ragonet.In this study, the rate dependency of transverse cracking evolution in cross-ply laminates is investigated for several 90° plies thicknesses. The crack detection methodology is based on a recently proposed protocol relying on the use of infrared thermography. A new analysis methodology is proposed to make it more robust and to directly link the spatial localizat...
Papers
8.83 Mo
29/03/2024
Using Longwave Infrared Hyperspectral Imaging for a Quantitative Atmospheric Tracer Monitoring in Outdoor Environments Eitan Hirsch, Eyal Agassi, Alon Manor.Quantitative real-time retrieval of concentration-lengths (CL) through gaseous plumes is an important tool for environmental monitoring, enabling remote monitoring of emissions from industrial facilities and risk assessmentin scenarios of toxic gas releases. The adoption of LWIR (Long Wave Infra-Red) hyperspectral imaging as a leading technique for remote g...
Papers
9.28 Mo
29/03/2024
Status and Developments in Geological Remote Sensing R.D. Hewson et al.Recent improvements and availability of optical to infrared to thermal satellite and airborne sensors opens up the opportunity for advancing surface mineralogy and geological mapping. Such mapping may include the identification of alteration zones for exploration activities or monitoring ore quality and inventory within open cuts. Remote sensing technology is also on the cusp ...
Papers
3.28 Mo
29/03/2024
Thermomechanical Behavior of Steels in Tension Studied with Synchronized Full-Field Deformation and Temperature Measurements G.C. Soares, N.I. Vázquez-Fernández, M. HokkaDespite tensile testing being commonly used for investigating the mechanical behavior of materials, the occurrence of heterogeneous strain and increasing temperature at high strain rates make the experiment much more complex. This work presents a method integrating synchronous full-field stereo Digital Image Correlation (DIC) and Infrared Thermograph...
Papers
9.5 Mo
29/03/2024
Ground-Based Remote Sensing of CH4 and N2O Fluxes from a Wastewater Treatment Plant and Nearby Biogas Production with Discoveries of Unexpected Sources M. Gålfalk, S.N. Påledal, R. Sehlén, D. Bastviken.This study is an attempt to assess CH4 and N2O emissions from all the treatment steps of a wastewater treatment plant (WWTP) in Sweden, serving 145 000 persons, and an adjacent biogas production facility. We have used novel mid-IR ground-based remote sensing with a hyperspectral camera to visualize and quantify the emissions on 21 days during a ...
Papers
6.32 Mo
29/03/2024
Active Thermography for Panel Paintings Inspection: A Comparative Study of Midwave and Long-Wave Infrared Spectral Analysis Active thermography was used as a multispectral non-destructive approach for characterisation of multi-layered panel paintings and analysis of their defects caused by aging and environmental effects. Two oil compositions painted on canvas, provided by C2RMF in the Louvre museum (Centre de Recherche et de Restauration des Musées de France) were under inspection. Active Thermography was demonstra...
Papers
4.18 Mo
29/03/2024
Detection of Gaseous Plumes in Airborne Hyperspectral Imagery The thermal hyperspectral sensor Hyper-Cam was mounted on a light aircraft and measured continuous releases of several atmospheric tracers from a height of 2 km. A unique detection algorithm that eliminates the need for clear background estimation was operated over the acquired data with excellent detection results. The data-cubes were acquired in a “target mode”, which is a unique method of op...
Papers
1.92 Mo
29/03/2024
Background Radiance Estimation for Gas Plume Quantification for Airborne Hyperspectral Thermal Imaging Hyperspectral imaging in the long-wave infrared (LWIR) is a mean that is proving its worth in the characterization of gaseous effluent. Indeed the spectral and spatial resolution of acquisition instruments is steadily decreasing, making the gases characterization increasingly easy in the LWIR domain. The majority of literature algorithms exploit the plume contribution to the radiance correspond...
Papers
6.92 Mo