Results 71 to 80 of about 48,460 (263)

Stereo Matching in the Presence of Sub-Pixel Calibration Errors [PDF]

, 2009
Stereo matching commonly requires rectified images that are computed from calibrated cameras. Since all under-lying parametric camera models are only approximations, calibration and rectification will never be perfect.
Gehrig, Stefan, Hirschmüller, Heiko
core   +1 more source

Experimental assessment of large mammal population estimates from airborne thermal videography

Wildlife Biology, EarlyView.
Wildlife resource management requires reliable, fast, and affordable methods of surveying wildlife populations to develop and adaptively adjust policies. Thermal video from drones can yield high rates of detection over large areas with relative speed and safety.
Julia S. McElhinny, Gregory D. Larsen, Maxwell Messinger, Chad H. Newbolt, Andrew Whitworth, Stephen S. Ditchkoff, Miles R. Silman, Jared T. Beaver   +7 more
wiley   +1 more source

EnMAP Radiometric Inflight Calibration

, 2014
EnMAP (Environmental Mapping and Analysis Program; www.enmap.org) is a German hyperspectral satellite mission with the declared goal to investigate the Earth’s surface with a so far surpassing quality. The main scientific goals are the ecological assessment of vegetation for agriculture and forestry, of water bodies for coastal zones and inland waters ...
Krawczyk, Harald, Gerasch, Birgit, Walzel, Thomas, Storch, Tobias, Müller, Rupert, Sang, Bernhard, Chlebek, Christian   +6 more
openaire   +2 more sources

Integrated X‐Ray, Gamma Radiation, and Micro‐CT Techniques for Quantitative Wood Characterization

X-Ray Spectrometry, EarlyView.
ABSTRACT The present research integrates microcomputed tomography (micro‐CT), x‐ray fluorescence, and gamma‐ray transmission to quantitatively characterize wood species. A total of 22 samples from seven species were analyzed for density (ρ), linear attenuation coefficient (μ), Compton scattering, micro‐CT gray values (GV), porosity, mass attenuation ...
Roberta M. S. P. Borges, Josiane E. Cavalcante, Isis V. N. S. Franzi, Anderson G. Paula, Roberta G. Leitão, Marcelino José dos Anjos, Ricardo T. Lopes, Davi F. Oliveira   +7 more
wiley   +1 more source

ARCADE: Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission [PDF]

, 2006
The Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission (ARCADE) is a balloon-borne instrument designed to measure the temperature of the cosmic microwave background at centimeter wavelengths.
A. Kogut, Bartlett, Burigana, Burigana, D. Fixsen, E. Wollack, Fixsen, Fixsen, Fixsen, Fixsen, Fornengo, Gnedin, Gush, Haiman, J. Singal, Jungman, Kogut, Kogut, L. Lowe, M. Limon, M. Seiffert, Mather, Oh, P. Lubin, P. Mirel, S. Fixsen, S. Levin, Singal, Sunyaev, Valle, Zeld´ovich   +30 more
core   +2 more sources

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves, Ritesh Chowdhry, Meilun Zhou, Ira Harmon, Ben Weinstein, S. K. Morgan Ernest, Alina Zare, Ethan P. White, Stephanie A. Bohlman   +8 more
wiley   +1 more source

An Airborne Gamma-Ray Spectrometry Survey of Nuclear Sites in Belgium [PDF]

, 2001
No abstract ...
Cresswell, A.J., McLeod, J.J., Murphy, S., Sanderson, D.C.W.   +3 more
core  

Hotspots on cold mountains: Hot flowers as pollinator refuges in mountain ecosystems

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Mountain environments constrain the activity of ectothermic insects. Yet, fine‐scale thermal refuges can buffer these thermal constraints, helping insects remain active in cold conditions.
Joshua M. Coates, Maldwyn J. Evans, Ben C. Scheele, Saul A. Cunningham   +3 more
wiley   +1 more source

A new dataset of rain cells based on observations of Tropical Rainfall Measuring Mission (TRMM) precipitation radar, visible/infrared scanner and microwave imager [PDF]

Earth System Science Data
Understanding the characteristics of the rain cell, the most basic unit in the natural precipitation system, is helpful in improving the cognition of the precipitation system. In this study, based on the merged precipitation profile data, reflectance and
Z. Wu, J. Shang, C. Cui, P. Zhang, S. Gu, L. Chen, Y. Fu   +6 more
doaj   +1 more source

Radiometric considerations in remote sensing systems [PDF]

All sensors systems designed to acquire quantitative data undergo radiometric calibration. The types and potential accuracies of calibration are discussed as well as the needs for calibration in the practical application of sensors.
Goetz, A. F. H.
core   +1 more source