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Terry L. Pavlis and Laura F. Serpa
We assess the accuracy of Structure-from-Motion/Multiview stereo (SM) terrain models acquired ad hoc or without high-resolution ground control to analyze their usage as a base for inexpensive 3D bedrock geologic mapping. Our focus is on techniques that c...
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T. Edwin Chow, Joyce Chien and Kimberly Meitzen
The primary objective of this study was to examine the quality of volunteered geographic information (VGI) data for flood mapping of Hurricane Harvey. As a crowdsourcing platform, the U-Flood project mapped flooded streets in the Houston metro area. This...
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Jia Yang, Xiaopeng Li, Lei Luo, Lewen Zhao, Juan Wei and Teng Ma
Recently, multirotor UAVs have been widely used in high-precision terrain mapping, cadastral surveys and other fields due to their low cost, flexibility, and high efficiency. Indirect georeferencing of ground control points (GCPs) is often required to ob...
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Jaime Arriaga, Gabriela Medellin, Elena Ojeda and Paulo Salles
Video monitoring has become an indispensable tool to understand beach processes. However, the measurement accuracy derived from the images has been taken for granted despite its dependence on the calibration process and camera movements. An easy to imple...
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Su Zhang, Hays A. Barrett, Shirley V. Baros, Paul R. H. Neville, Sandeep Talasila and Lisa L. Sinclair
As one of the earliest forms of remote sensing, aerial photography has been regarded as an important part of the mapmaking process. Aerial photos, especially historical aerial photos, provide significant amount of valuable information for many applicatio...
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Clare Price and Paul Elsner
Forest loss and degradation are central problems in the context of climate change and biodiversity conservation. The identification of areas of loss relies on accurate base maps. Central datasets in this context are the products of the Global Land Analys...
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Yali Gong, Huan Xie, Yanmin Jin and Xiaohua Tong
In recent years, the availability of multi-temporal global land-cover datasets has meant that they have become a key data source for evaluating land cover in many applications. Due to the high data volume of the multi-temporal land-cover datasets, probab...
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Michaela Doukari, Stelios Katsanevakis, Nikolaos Soulakellis and Konstantinos Topouzelis
Marine conservation and management require detailed and accurate habitat mapping, which is usually produced by collecting data using remote sensing methods. In recent years, unmanned aerial systems (UAS) are used for marine data acquisition, as they prov...
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Václav ?afár, Markéta Potucková, Jakub Karas, Jan Tlustý, Eva ?tefanová, Marián Jancovic and Drahomíra Cígler ?ofková
The main challenge in the renewal and updating of the Cadastre of Real Estate of the Czech Republic is to achieve maximum efficiency but to retain the required accuracy of all points in the register. The paper discusses the possibility of using UAV photo...
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Juan J. Ruiz-Lendínez, Manuel A. Ureña-Cámara, José L. Mesa-Mingorance and Francisco J. Quesada-Real
There are many studies related to Imagery Segmentation (IS) in the field of Geographic Information (GI). However, none of them address the assessment of IS results from a positional perspective. In a field in which the positional aspect is critical, it s...
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Tomoyuki Setoguchi, Yoichiro Ogino, Riichi Ouchida, Akira Takahashi, Yasunori Ayukawa and Kiyoshi Koyano
The aim of this pilot study was to evaluate the accuracy of a newly developed dynamic navigation system and to compare the accuracy between flapless and open-flap surgery, and between surgeons. The subjects were patients who were scheduled to receive imp...
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Sónia Rolland Sobral and Catarina Félix de Oliveira
Self-assessment is one of the strategies used in active teaching to engage students in the entire learning process, in the form of self-regulated academic learning. This study aims to assess the possibility of including self-evaluation in the student?s f...
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Oleg Rudenko,Oleksandr Bezsonov,Oleh Lebediev,Valentyn Lebediev,Kiril Oliinyk
Pág. 37 - 46
This paper addresses the task of identifying the parameters of a linear object in the presence of non-Gaussian interference. The identification algorithm is a gradient procedure for minimizing the combined functional. The combined functional, in turn, co...
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Mengistie Kindu, Daniela Angelova, Thomas Schneider, Martin Döllerer, Demel Teketay and Thomas Knoke
Monitoring urban growth patterns is an important measure to improve our understanding of land use/land cover (LULC) changes and a central part in the proper development of any city. In this study, we analyzed the changes over a period of 30 years (1985?2...
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Adindha Surya Anugraha, Hone-Jay Chu and Muhammad Zeeshan Ali
The utilization of urban land use maps can reveal the patterns of human behavior through the extraction of the socioeconomic and demographic characteristics of urban land use. Remote sensing that holds detailed and abundant information on spectral, textu...
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Mohamed T. Elnabwy, Emad Elbeltagi, Mahmoud M. El Banna, Mohamed M.Y. Elshikh, Ibrahim Motawa and Mosbeh R. Kaloop
Monitoring the dynamic behavior of shorelines is an essential factor for integrated coastal management (ICM). In this study, satellite-derived shorelines and corresponding eroded and accreted areas of coastal zones have been calculated and assessed for 1...
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Huseyin Yurtseven
In this study, different in-situ and close-range sensing surveying techniques were compared based on the spatial differences of the resultant datasets. In this context, the DJI Phantom 3 Advanced and Trimble UX5 Unmanned Aerial Vehicle (UAV) platforms, Z...
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Antonio Tomás Mozas-Calvache
This study focuses on the positional accuracy of Digital Elevation Models (DEMs) and 3D vector features by considering that both datasets can be used as a product to assess or as a reference. The main objective is to provide an alternative method to the ...
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Dimitrios S. Paraforos, Galibjon M. Sharipov, Andreas Heiß and Hans W. Griepentrog
Remote sensing data in agriculture that are originating from unmanned aerial vehicles (UAV)-mounted multispectral cameras offer substantial information in assessing crop status, as well as in developing prescription maps for site-specific variable rate a...
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Mohamed Elsayed Elsobeiey
The aim of this paper is to assess the performance of satellite-based correction service, Trimble PP-RTX, and Virtual Reference Stations (VRS) for bathymetry determination, and check how far these techniques meet the minimum standards of the Internationa...
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