Results 41 to 50 of about 13,814,223 (289)

Precise Georeferencing of RGB and Multispectral Drone Images without Ground Control Points [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Drones equipped with multispectral cameras are increasingly used in environmental studies. These surveys often take place in challenging locations such as mudflats, where marking and surveying ground control points (GCPs) is difficult, making the use of ...
J. A. Gonçalves, J. A. Gonçalves, M. Meyer, M. Meyer, A. Bio   +4 more
doaj   +1 more source

Correction of Pushbroom Satellite Imagery Interior Distortions Independent of Ground Control Points

Remote Sensing, 2018
Compensating for distortions in pushbroom satellite imagery has a bearing on subsequent earth observation applications. Traditional distortion correction methods usually depend on ground control points (GCPs) acquired from a high-accuracy geometric ...
Guo Zhang, Kai Xu, Qingjun Zhang, Deren Li   +3 more
doaj   +1 more source

Accuracy of UAV-based DEMs without ground control points

GeoInformatica, 2023
AbstractUnmanned aerial vehicles (UAVs) are increasingly used in various environmental research projects and other activities that require accurate topography images. The quality of elevation models derived from UAV measurements varies depending on many variables (e.g. UAV equipment used, terrain conditions, etc.).
openaire   +1 more source

UAV AND LIDAR IMAGE REGISTRATION: A SURF-BASED APPROACH FOR GROUND CONTROL POINTS SELECTION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Multisource remote sensing image data provides synthesized information to support many applications including land cover mapping, urban planning, water resource management, and GIS modelling.
B. Kalantar, N. Ueda, H. A. H. Al-Najjar, H. Moayedi, H. Moayedi, A. A. Halin, S. Mansor   +6 more
doaj   +1 more source

Learning to Detect Ground Control Points for Improving the Accuracy of Stereo Matching [PDF]

2014 IEEE Conference on Computer Vision and Pattern Recognition, 2014
While machine learning has been instrumental to the ongoing progress in most areas of computer vision, it has not been applied to the problem of stereo matching with similar frequency or success. We present a supervised learning approach for predicting the correctness of stereo matches based on a random forest and a set of features that capture various
Spyropoulos, Aristotle, Komodakis, Nikos, Mordohai, Philippos   +2 more
openaire   +3 more sources

Agricultural Gebesee test site (central Germany): ground control points and supplementing check points in the vicinity of the test site

, 2017
Agricultural Gebesee test site (central Germany): ground control points and supplementing check points in the vicinity of the test ...
Jussi Baade (8016590), Truckenbrodt, Sina C, Baade, Jussi, Sina C Truckenbrodt (6978821)   +3 more
core   +1 more source

Accuracy of 3D Landscape Reconstruction without Ground Control Points Using Different UAS Platforms

Drones, 2020
The rapid increase of low-cost consumer-grade to enterprise-level unmanned aerial systems (UASs) has resulted in the exponential use of these systems in many applications.
Margaret Kalacska, Oliver Lucanus, J. Pablo Arroyo-Mora, Étienne Laliberté, Kathryn Elmer, George Leblanc, Andrew Groves   +6 more
doaj   +1 more source

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine, Hallie Coltin, Sylvia Cheng, Lucie Lafay‐Cousin, Vanan Issai Magimairajan, Craig Erker, Stéphanie Vairy, Lynette Bowes, Adam Fleming, Donna Johnston, Sarah McKillop, Roona Sinha, Julie Bennett, Christina Coleman, Laura Wheaton, Shayna Zelcer, Samuele Renzi, Thai Hoa Tran   +17 more
wiley   +1 more source

High-Precision UAV Photogrammetry with RTK GNSS: Eliminating Ground Control Points

Hittite Journal of Science and Engineering
The advancements in Unmanned Aerial Vehicles (UAVs) have significantly enhanced the capability of the photogrammetric approaches, particularly with the integration of Real-Time Kinematic (RTK) sensors.
Mehmet Nurullah Alkan
doaj   +1 more source

PRECISION ANALYSIS OF POINT-AND-SCALE PHOTOGRAMMETRIC MEASUREMENTS FOR CORRIDOR MAPPING: PRELIMINARY RESULTS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper addresses the key aspects of the sensor orientation and calibration approach within the mapKITE concept for corridor mapping, focusing on the contribution analysis of point-and-scale measurements of kinematic ground control points.
P. Molina, M. Blázquez, J. Sastre, I. Colomina   +3 more
doaj   +1 more source