نتایج جستجو برای: aerial photography

تعداد نتایج: 40814  

Journal: :Journal of the Optical Society of America 1919

2016
Evan Beachly James Higgins Christian Laney Sebastian G. Elbaum Carrick Detweiler Craig Allen Dirac Twidwell

Prescribed fires have many benefits, but existing ignition methods are dangerous, costly, or inefficient. This paper presents the design and evaluation of a micro-UAS that can start a prescribed fire from the air, while being operated from a safe distance and without the costs associated with aerial ignition from a manned aircraft. We evaluate the performance of the system in extensive controll...

Journal: :Remote Sensing 2016
Peter G. Martin James Moore John S. Fardoulis Oliver D. Payton Thomas B. Scott

The Sellafield nuclear plant is a 3 km2 site in north-west Cumbria, England, with a long and distinguished history of nuclear power generation, reprocessing and waste storage—with a current working emphasis on decommissioning and clean-up. Important to this safe, efficient and complete remediation of the site, routine monitoring is essential in a wide range of on-site environments and structure...

Journal: :Rangeland Ecology & Management 2005

2007
AN JIN CHANG JUNG OK KIM KIYUN YU YONG IL KIM

The main objective of this study was to compare methods to estimate the number of trees and individual tree height using remote sensing data. A Korean pine tree study area for these techniques was selected. the methods of watershed segmentation, region-growing segmentation, and morphological filtering were compared to estimate their accuracy. The algorithm was initiated by developing a normaliz...

2005
Bridgett J. Naylor Bryan A. Endress Catherine G. Parks

We evaluated the effectiveness of natural color aerial photography as a tool to improve detection, monitoring, and mapping of sulfur cinquefoil (Potentilla recta L.) infestations. Sulfur cinquefoil is an exotic perennial plant invading interior Pacific Northwest rangelands. Because sulfur cinquefoil produces distinctive pale yellow flowers, we timed aerial photography for early July, when the p...

2017
Run Li Zegen Wang

This article describes the features and advantages of IPS in Unmanned Aerial Vehicle remote sensing image processing processes and software. Examples validate the software can he able to quickly meet the massive Unmanned Aerial Vehicl remote sensing data processing, remote sensing image data processing for the Unmanned Aerial Vehicle market provides a practical and effective solution.

Journal: :Robotics and Autonomous Systems 2015
Fabio Ruggiero Jonathan Cacace Hamid Sadeghian Vincenzo Lippiello

A passivity-based control of Vertical Take-off and Landing (VToL) Unmanned Aerial Vehicles (UAVs) is presented in this paper. An estimator of unmodeled dynamics and external wrench (forces plus moments) acting on the aerial vehicle and based on the momentum of the system is employed to compensate such disturbances effects. This arrangement allows VToL UAVs to perform hovering, tracking and aeri...

Journal: :Annals of GIS 2008
Tienyin Chou Chihheng Liu Meilin Yeh Yingchih Chen

Owing to the rapid developments in the field of remote sensing, it is being used in a wide range of applications. Especially, based on the purpose, the choice has to be made from the different multi-scale images available. Besides, as remote sensing technology includes the work of aerial survey, DEM (Digital Elevation Model) information can also be obtained. So these technologies can provide la...

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