Results 241 to 250 of about 4,996,434 (258)

Using Direct-Georeferencing with a MEMS-LiDAR to Classify Traffic Signs, an Automatic Approach

International Conference on Software Security and Assurance
In this article, a micro-electromechanical systems light-detection and ranging (MEMS-LiDAR) based sampling method for traffic sign recognition is presented. MEMS-LiDAR is an emerging remote-sensing technology in the autopilot (AP) area.
Xuanzhi Liu, E. Khoramshahi, Ruochen Zhang, Chen Chen, E. Puttonen, Yuwei Chen   +5 more
semanticscholar   +1 more source

Adaptive multi-image direct georeferencing for unmanned aerial vehicle application

2017 IEEE 2nd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC), 2017
Due to the flexibility and unmanned property, unmanned aerial vehicle (UAV) has been used on a wide range of applications and conditions recently. In the large number of possible applications, real time and accurate georeferencing is very important. Direct georeferencing with out ground control points is defined as the direct measurement of the imaging
Hongguang Li, Chunlei Liu, Zepeng He
openaire   +1 more source

Impact of vertical deflection on direct georeferencing of airborne images

Survey Review, 2014
This paper is aimed at analysing the influence of the vertical deflection (DOV) in direct georeferencing (DG) of image data from an aerial digital frame camera. Without considering the value of the DOV, a systematic error is involved in the determination of the point position.
PEPE, MASSIMILIANO, PREZIOSO, Giuseppina, SANTAMARIA, Raffaele   +2 more
openaire   +2 more sources

Accuracy of Pléiades Photogrammetric Products Under Direct and Controlled Georeferencing

2019
Space-based photogrammetry has benefitted from significant advancements recently, with progress in software, analytical techniques, and a surge in image availability. However, no photogrammetric products can be considered perfect. Estimates of error from photogrammetric modelling are thus important to characterise when faced with the various processing
Lewis, Clare, Sirguey, Pascal, Cox, Simon   +2 more
openaire   +1 more source

Evaluation of the accuracy of direct georeferencing of smartphones for use in some urban planning applications within smart cities

3RD INTERNATIONAL CONFERENCE ON SMART CITIES AND SUSTAINABLE PLANNING, 2023
Luay Y. Hussein, I. Alwan, Tariq N. Ataiwe   +2 more
semanticscholar   +1 more source

Towards Precise Visual Navigation and Direct Georeferencing for MAV Using ORB-SLAM2

2017 Baltic Geodetic Congress (BGC Geomatics), 2017
A low accuracy of positioning using Global Navigation Satellite System (GNSS) are not meet geodetic requirements for direct images georeferencing for Unmanned Aerial Vehicle (UAV) photogrammetry. A majority of UAVs are equipped with a monocular or stereo non-metric cameras for either visual data gathering or live video feed for operator.
openaire   +1 more source

Investigation of accuracy of PPP and PPP-AR methods for direct georeferencing in UAV photogrammetry

Earth Science Informatics, 2022
Taylan Ocalan, Tarik Turk, N. Tunalıoğlu, Mert Gürtürk   +3 more
semanticscholar   +1 more source

Initial results of the Italian project on direct georeferencing in aerial photogrammetry

2004
The paper describes one of the first outcomes of an Italian national research Project on inertial positioning in photogrammetry. The focus of the paper is on the quality which is attainable from direct photogrammetry in an industrial production context.
V. Casella, G. Forlani, M. Franzini, R. Galetto, A. Manzino, RADICIONI, Fabio, G. Sona, B. Villa   +7 more
openaire   +3 more sources

Enhancing village-level spatial planning with unmanned aerial vehicles: A comparative study of direct georeferencing and ground control points

Applied Geomatics
G. Prabowo, Suprapedi Suprapedi, Muhammad Bisri, W. Mahmudy, Ari Sugeng Budiyanta, Nur Sugi, Try Kusuma Wardana, A. A. Ramadian, Hartono Hartono, Rudi Choirul Anwar, Unggul Satrio Yudhotomo   +10 more
semanticscholar   +1 more source

Transformation of UAV Attitude and Position for Use in Direct Georeferencing

2016
The direct georeferencing in aerial photogrammetry requires precise measurement of position and attitude of an image sensor, because the object point position is computed directly using this data. But for several reasons, data from onboard inertial navigation system can not be used for this purpose directly.
openaire   +1 more source