Results 11 to 20 of about 264,386 (214)
Multifunctional Ground Control Points with a Wireless Network for Communication with a UAV [PDF]
Sensors, 2019 Ground control points (GCPs) are commonly used for georeferencing in remote sensing. Precise position measurement of the GCPs typically requires careful ground surveying, which is time-consuming and labor-intensive and thus excessively costly if it needs to be repeated multiple times in a season.
William Rooney +2 more
exaly +5 more sources
Accurate disparity estimation in light field using ground control points [PDF]
Computational Visual Media, 2016 The recent development of light field cameras has received growing interest, as their rich angular information has potential benefits for many computer vision tasks. In this paper, we introduce a novel method to obtain a dense disparity map by use of ground control points (GCPs) in the light field.
Qing Wang
exaly +2 more sources
Set-point Control for a Ground-based Reconfigurable Robot
2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2022 Reconfigurable mobile robots are well suited for inspection tasks in legacy nuclear facilities where access is restricted and the environment is often cluttered. A reconfigurable snake robot, MIRRAX, has previously been developed to investigate such facilities.
Wei Cheah +3 more
openaire +3 more sources
Terrestrial photogrammetry without ground control points
Earth Science Informatics, 2013 Terrestrial photogrammetry should be the survey technique of choice when updating large scale urban maps and GIS databases, where 3D data and attribute data are required. Its main drawback is the need for Ground Control Points (GCP) to reference the survey.
Gianfranco Forlani +3 more
openaire +2 more sources
Remotely Sensed Ground Control Points [PDF]
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Accurate ground control is required to georeferenced airborne and spaceborne images. The production of ortho-photogrammetric data requires ground control that is traditionally provided as Ground Control Points (GCPs) by GNSS measurements in the field.
openaire +3 more sources
Ground Control Point Automatic Extraction for Spaceborne Georeferencing Based on FPGA [PDF]
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 Feature points that are obtained from the combined speeded-up robust feature (SURF) detector and binary robust independent elementary features (BRIEF) descriptor have a highly robust performance. These points are previously considered the ground control points (GCPs) for building a connection between the image coordinates and the corresponding geodetic
Dequan Liu +4 more
openaire +2 more sources
INS-camera calibration without ground control points [PDF]
2014 Sensor Data Fusion: Trends, Solutions, Applications (SDF), 2014 In this paper we present an approach for performing system calibration of a sensor suite consisting of a fixed mounted camera and an inertial navigation system without the usage of a photogrammetric calibration site. The aim of the presented work is to obtain accurate direct georeferencing of camera images collected with manned or unmanned aerial ...
Daniel Bender +3 more
openaire +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
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 +2 more
openaire +2 more sources
Automated Ground Control Point Identification using Deep Learning Techniques
VGC 2023 - Unveiling the dynamic Earth with digital methods : 5th Virtual Geoscience Conference ; Book of Abstracts, 2023 Ground Control Points (GCPs) play a crucial role in photogrammetry, providing essential information for georeferencing, registration and scaling of aerial and satellite imagery. These reference points, with known coordinates, are strategically placed and precisely measured on the ground to achieve accurate georeferencing in the photogrammetric process.
Blanch Gorriz, Xabier +5 more
openaire +3 more sources