Results 11 to 20 of about 5,369 (165)

Visual Exposure of Rock Outcrops in the Context of a Forest Disease Outbreak Simulation Based on a Canopy Height Model and Spectral Information Acquired by an Unmanned Aerial Vehicle

open access: yesISPRS International Journal of Geo-Information, 2020
This research was focused on the study of visual exposure evolution in the locality of the Drátenická skála nature monument (in the Czech Republic) and the surrounding forest complex in terms of history and through modelling for further possible stand ...
Marie Balková   +3 more
doaj   +1 more source

Evaluating the Geometric Accuracy of Large Scale Digital Orthophotos Produced from Aerial Photography

open access: yesInternational Journal of Environment and Geoinformatics, 2020
This paper aims to assess the geometric accuracy of large-scale digital orthophoto produced from aerial photography in the project area. Since accuracy assessment of digital orthophotos is a complicated issue some main factors and parameters that affect
Ozan Arslan, Pınar Yılmaz
doaj   +1 more source

Application of digital techniques to generate a cartographic database of Córrego do Cabuçu de Baixo basin, São Paulo, SP, Brazil

open access: yesRevista Ambiente & Água, 2008
The use of appropriate cartography database is extremely important to support projects of planning and land management. However, the absence of maps, or the amount of obsolete maps, has been leading to the adoption of alternative methodologies aiming to ...
José Alberto Quintanilha   +2 more
doaj   +1 more source

UAV Photogrammetry for Road Surface Modelling

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2015
Recently, the interest of Unmanned Aerial Vehicle application in photogrammetric environment for roads observation and monitoring has increased in many countries, in Lithuania as well.
Birutė Ruzgienė   +5 more
doaj   +1 more source

Accuracy of points of cartographic projection of orthophotos obtained with Remotely Piloted Aircraft (RPA)

open access: yesGeografares, 2022
This study evaluated three orthophotos, generated from aerial surveys configured at 80 m, 100 m and 120 m in height with multirotor RPA, model Phantom 4 Pro from the company DJI coupled to Complementary Metal Oxide Semiconductor (CMOS) sensor of 1 inch ...
Agostinho Prado Alves Junior   +1 more
doaj   +1 more source

Vpliv kakovosti vhodnih podatkov na kakovost ortofota : Influence of Input Data Quality on the Quality of Orthophoto [PDF]

open access: yesGeodetski Vestnik, 2004
In the article, the influence of input data for orthophoto map production on the final product is discussed. The quality of orthophoto is mostly influenced by image orientation parameters, quality of the digital elevation model and digital image quality.
Mojca Kosmatin Fras
doaj  

A comparison analysis of different photogrammetric softcopies for geodata production

open access: yesGeodesy and Cartography, 2014
Up-to-date mapping technologies for geodata production are widely applicable in Remote Sensing and Photogrammetry Communities. Therefore, the education in Remote Sensing and photogrammetric methods becomes very important using different image processing ...
Mažena Voitechovič, Birutė Ruzgienė
doaj   +1 more source

Aerial Imagery Feature Engineering Using Bidirectional Generative Adversarial Networks: A Case Study of the Pilica River Region, Poland

open access: yesRemote Sensing, 2021
Generative adversarial networks (GANs) are a type of neural network that are characterized by their unique construction and training process. Utilizing the concept of the latent space and exploiting the results of a duel between different GAN components ...
Maciej Adamiak   +2 more
doaj   +1 more source

Automation Aspects for the Georeferencing of Photogrammetric Aerial Image Archives in Forested Scenes

open access: yesRemote Sensing, 2015
Photogrammetric aerial film image archives are scanned into digital form in many countries. These data sets offer an interesting source of information for scientists from different disciplines. The objective of this investigation was to contribute to the
Kimmo Nurminen   +7 more
doaj   +1 more source

Complexity Level of People Gathering Presentation on an Animated Map—Objective Effectiveness Versus Expert Opinion

open access: yesISPRS International Journal of Geo-Information, 2020
The aim of the following study was to present three alternative methods of visualization on animated maps illustrating the movement of people gathered at an open-air event recorded on photographs taken by a drone.
Beata Medyńska-Gulij   +3 more
doaj   +1 more source

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