Material classification is becoming more important in computer vision and digital photography applications, which require accurate classification of objects present in the imaged scene. This is a very challenging task because the sheer diversity of scene content and lighting conditions decreases the usefulness of many colorand texture-based features used in image classification. In this work, w...

Cooling greenhouses is essential to provide a suitable environment for plant growth in arid regions characterized by brackish water resources. However, using conventional cooling methods are facing many challenges. Filtering out near infra-red radiation (NIR) at the greenhouse cover can significantly reduce the heating load and can solve the overheating problem of the greenhouse air. This paper...

Why do plants reflect in the green and have a "red edge" in the red, and should extrasolar photosynthesis be the same? We provide (1) a brief review of how photosynthesis works, (2) an overview of the diversity of photosynthetic organisms, their light harvesting systems, and environmental ranges, (3) a synthesis of photosynthetic surface spectral signatures, and (4) evolutionary rationales for ...

The aerodynamic roughness length (z0m) is an important parameter that affects the momentum and energy exchange between the earth surface’s and the atmosphere. In this paper, the gradient wind speed data that were observed from May to October, 2014, at the Si Daoqiao station, which is located in an area of sparse Tamarix in the downstream region of the Heihe River Basin (HRB), are used to evalua...

Remotely sensing the water status of plant canopies remains a long term goal of remote sensing research. Established approaches involve measurements in the thermal infrared and the 900-2000nm reflective infrared. Less popular UVvisible-NIR techniques presumably deserve research attention, because photochemical changes linked to plant water status manifest spectral light scattering and absorptio...

Since consumers are showing increased interest in the origin and method of production of their food, it is important to be able to authenticate dietary history of animals by rapid and robust methods used in the ruminant products. Promising breakthroughs have been made in the use of spectroscopic methods on fat to discriminate pasture-fed and concentrate-fed lambs. However, questions remained on...

To validate the iCOR atmospheric correction algorithm applied to Sentinel-3 Ocean and Land Color Instrument (OLCI), Top-of-Atmosphere (TOA) observations over land, globally retrieved Aerosol Optical Thickness (AOT), Top-of-Canopy (TOC) reflectance, Vegetation Indices (VIs) were intercompared with (i) AERONET AOT AERONET-based TOC reflectance simulations, (ii) RadCalNet surface observations, (ii...

Fraction of vegetation cover (FVC) is often estimated by unmixing a linear mixture model (LMM). In the LMM-based algorithm, differences can be seen in assumptions and constraints imposed to the model such as spectral vegetation index, inducing variations in algorithm. As a result, robustness against noises in reflectance spectrum is somewhat different among those algorithms, depending on a targ...

Abstract Nereid, Neptune’s third-largest satellite, lies in an irregular orbit and is the only outer satellite system (apart from Triton) that can be spectroscopically characterized with current generation of Earth-based telescopes. We report our results on spectral characterization Nereid using its reflectance spectrum 0.8 to 2.4 μ m, providing first measurements over range 0.8–1.4 m. detect a...