scholarly journals Advances in Remote Sensing of Agriculture: Context Description, Existing Operational Monitoring Systems and Major Information Needs

2013 ◽  
Vol 5 (2) ◽  
pp. 949-981 ◽  
Author(s):  
Clement Atzberger
PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0170706 ◽  
Author(s):  
Marta Ramírez-Pérez ◽  
Rafael Gonçalves-Araujo ◽  
Sonja Wiegmann ◽  
Elena Torrecilla ◽  
Raul Bardaji ◽  
...  

Author(s):  
S. Schulte ◽  
F. Hillen ◽  
T. Prinz

Collecting vast amount of data does not solely help to fulfil information needs related to crowd monitoring, it is rather important to collect data that is suitable to meet specific information requirements. In order to address this issue, a prototype is developed to facilitate the combination of UAV-based RGB and thermal remote sensing datasets. In an experimental approach, image sensors were mounted on a remotely piloted aircraft and captured two video datasets over a crowd. A group of volunteers performed diverse movements that depict real world scenarios. The prototype is deriving the movement on the ground and is programmed in MATLAB. This novel detection approach using combined data is afterwards evaluated against detection algorithms that only use a single data source. Our tests show that the combination of RGB and thermal remote sensing data is beneficial for the field of crowd monitoring regarding the detection of crowd movement.


2021 ◽  
pp. 1-18
Author(s):  
Nicholas C. Coops ◽  
Alexis Achim ◽  
Paul Arp ◽  
Christopher W. Bater ◽  
John P. Caspersen ◽  
...  

The Canadian forest sector requires detailed information regarding the amount and characteristics of the forest resource. To address these needs, inventory systems that spatially quantify timber and other forest related ecosystem services are required, that are accurate, comprehensive and timely. The Assessment of Wood properties using Remote Sensing (AWARE) was a five-year project involving collaboration between seven Canadian universities, and seven forest companies with support provided by provincial and federal forestry agencies and other non-for-profit forestry focused organisations. AWARE provided methods and tools to enhance the characterization of forests at national, landscape and individual tree scales. The project supported 24 post-doctoral fellows, PhD and MSc students that examined the roles that advanced three-dimensional remote sensing technologies can play in the development of accurate forest inventory systems across Canada. In this review we examine the AWARE research project, review research highlights, key outcomes, future research needs, and provide an assessment of successes and challenges the project faced over its five-year lifetime.


2016 ◽  
Vol 4 (4) ◽  
pp. 0-0
Author(s):  
Михаил Бандурин ◽  
Mikhail Bandurin

This paper presents the results of the implementation of new operational monitoring systems. The issue of monitoring of water use is relevant as once especially in the south of Russia, having as significant water and using an annual average of no more than 2% of river flow, the Russian Federation in a number of regions deficient in water. The main reason for this — the extremely unequal distribution of water resources throughout the country that are not consistent with the needs of them, their very large temporal variability, especially in the southern regions of Russia. Existing methods of water conveyance structures survey aimed to assess the overall suitability of bearing structures of buildings for further use. In surveys, a number of questions to identify the nature of damage and defects, as well as forecasting of technical condition for a certain period of time.


2020 ◽  
Author(s):  
Niccolò Dematteis ◽  
Daniele Giordan ◽  
Fabrizio Troilo

<p> </p><p>Glaciological phenomena can have a strong impact on human activities in terms of hazards and freshwater supply. Therefore, a scientific observation is fundamental to investigate their current state and recent evolution. To this aim, experimenting innovative scientific survey methodologies and equipment is of primary importance. Strong efforts in this field have been spent in the glacial complex of the Grandes Jorasses massif (Mont Blanc area), where several ice break-offs glacial outburst triggered from the Planpincieux Glacier snout and the Whymper Serac and threatened the underling Planpincieux valley in the past. From 2009, the glacial complex has become an open filed laboratory where a wide set of close-range remote sensing survey systems have been developed and applied to investigate the glacial state and dynamics.</p><p>Two continuous monoscopic time-lapse cameras observe the Planpincieux Glacier since 2013. Digital image correlation is applied to the photographs to measure the surface kinematics at different level of detail. During the monitoring, image analysis techniques allowed at classifying the instability processes of the terminus and at estimating the volume of the break-off events. Such investigation revealed the presence of possible break-off precursors and a monotonic relationship between glacier velocity and break-off volume, which might help for risk evaluation.</p><p>A robotised total station (RTS) is active since 2009 to monitor the Whymper Serac velocity (Grandes Jorasses Glacier). The operative distance between the total station and targets is approximately 5000 m. A network of several prisms is installed onto the serac, but the extreme conditions related to the high-mountain environment force to replace periodically the stakes that are lost. Besides the RTS, a monoscopic camera acquires hourly images of the serac for surface velocity measurements.</p><p>In addition to the permanent monitoring systems, surveys with four different terrestrial interferometric radars have been conducted in the Planpincieux Glacier between 2013 and 2019. Helicopter-borne LiDAR and terrestrial laser scanner provided the DEM of the Planpincieux Glacier in 2014 and 2015 respectively. A sequence of six DEMs has been also produced by aerial and UAV structure from motion in the time span 2017-2019. Finally, a helicopter ground penetrating radar campaign was conducted in 2013 to evaluate the thickness of the Planpincieux Glacier and Whymper Serac.</p><p>For what concerns the mountain glaciers, the survey activity conducted in the Grandes Jorasses massif since 2009 is probably one the most intensive and variegated in European Alps. This makes such an environment an open-air laboratory for experimenting close-range remote sensing monitoring systems that it is ready for new research activities and monitoring solutions development.</p><p> </p><p> </p>


2008 ◽  
Vol 84 (6) ◽  
pp. 807-826 ◽  
Author(s):  
Michael A Wulder ◽  
Christopher W Bater ◽  
Nicholas C Coops ◽  
Thomas Hilker ◽  
Joanne C White

Forest characterization with light detection and ranging (LiDAR) data has recently garnered much scientific and operational attention. The number of forest inventory attributes that may be directly measured with LiDAR is limited; however, when considered within the context of all the measured and derived attributes required to complete a forest inventory, LiDAR can be a valuable tool in the inventory process. In this paper, we present the status of LiDAR remote sensing of forests, including issues related to instrumentation, data collection, data processing, costs, and attribute estimation. The information needs of sustainable forest management provide the context within which we consider future opportunities for LiDAR and automated data processing. Key words: LiDAR, airborne laser altimetry, forest inventory, height, volume, biomass, update, remote sensing


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