Results 31 to 40 of about 255,039 (224)

Globally Optimal Boresight Alignment of UAV-LiDAR Systems

CoRR, 2022
In airborne light detection and ranging (LiDAR) systems, misalignments between the LiDAR-scanner and the inertial navigation system (INS) mounted on an unmanned aerial vehicle (UAV)'s frame can lead to inaccurate 3D point clouds. Determining the orientation offset, or boresight error is key to many LiDAR-based applications. In this work, we introduce a
Smitha Gopinath, Hassan L. Hijazi, Adam Collins, Julian Dann Nathan Lemons, Emily Schultz-Fellenz, Russell Bent, Amira Hijazi, Gert Riemersma   +7 more
openaire   +2 more sources

An Analytic Model for Negative Obstacle Detection with Lidar and Numerical Validation Using Physics-Based Simulation

Sensors, 2021
Negative obstacles have long been a challenging aspect of autonomous navigation for ground vehicles. However, as terrestrial lidar sensors have become lighter and less costly, they have increasingly been deployed on small, low-flying UAV, affording an ...
Christopher Goodin, Justin Carrillo, J. Gabriel Monroe, Daniel W. Carruth, Christopher R. Hudson   +4 more
doaj   +1 more source

INTEGRATION OF UAV-LIDAR AND UAV-PHOTOGRAMMETRY FOR INFRASTRUCTURE MONITORING AND BRIDGE ASSESSMENT

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Abstract. The health assessment of strategic infrastructures and bridges represents a critical variable for planning appropriate maintenance operations. The high costs and complexity of traditional periodical monitoring with elevating platforms have driven the search for more efficient and flexible methods.
Gaspari, F., Ioli, F., Barbieri, F., Belcore, E., Pinto, L.   +4 more
openaire   +6 more sources

Evaluating the Performance of High Spatial Resolution UAV-Photogrammetry and UAV-LiDAR for Salt Marshes: The Cádiz Bay Study Case

Remote Sensing, 2022
Salt marshes are very valuable and threatened ecosystems, and are challenging to study due to their difficulty of access and the alterable nature of their soft soil.
Andrea Celeste Curcio, Gloria Peralta, María Aranda, Luis Barbero   +3 more
doaj   +1 more source

A Comparative Study of UAV Lidar, UAV, and GNSS RTK on Infrastructure Survey

IOP Conference Series: Materials Science and Engineering, 2023
Abstract The advancement of the latest techniques allows surveyors to have various approaches to solving survey tasks. The paper is an experimental study on collecting terrain data using different techniques including Lidar on a UAV, normal UAV, and GNSS-RTK.
Ngoc Quang Vu, Viet Ha Nguyen, Le Binh Ta, Hung Tien Van   +3 more
openaire   +1 more source

INTEGRATION OF IPHONE LiDAR WITH QUADCOPTER AND FIXED WING UAV PHOTOGRAMMETRY FOR THE FORESTRY APPLICATIONS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
The recent innovations in remote sensing technologies have given rise to the efficient mapping and monitoring of forests. The developments in the sensor implementation have mainly focused on optimizing the payload of the UAV system and allowed the users ...
Y. Yadav, Y. Yadav, S. K. P. Kushwaha, M. Mokros, M. Mokros, J. Chudá, M. Pondelík   +6 more
doaj   +1 more source

Quality Control of Outsourced LiDAR Data Acquired with a UAV: A Case Study

Remote Sensing, 2021
Over the last few decades, we witnessed a revolution in acquiring very high resolution and accurate geo-information. One of the reasons was the advances in photonics and LiDAR, which had a remarkable impact in applications requiring information with high
Luísa Gomes Pereira, Paulo Fernandez, Sandra Mourato, Jorge Matos, Cedric Mayer, Fábio Marques   +5 more
doaj   +1 more source

Mapping mangrove species using combined UAV-LiDAR and Sentinel-2 data: Feature selection and point density effects

, 2022
Mapping mangrove species is important for mangrove conservation and rehabilitation. However, due to the similar spectral signatures of most mangrove species, accurately mapping mangrove species remains an ongoing challenge.
Tan, X, Zhang, Q, Wan, B, Qiu, P, Wang, D   +4 more
core   +1 more source

3D Modeling of Individual Trees from LiDAR and Photogrammetric Point Clouds by Explicit Parametric Representations for Green Open Space (GOS) Management

ISPRS International Journal of Geo-Information, 2022
The development and management of green open spaces are essential in overcoming environmental problems such as air pollution and urban warming. 3D modeling and biomass calculation are the example efforts in managing green open spaces.
Deni Suwardhi, Kamal Nur Fauzan, Agung Budi Harto, Budhy Soeksmantono, Riantini Virtriana, Arnadi Murtiyoso   +5 more
doaj   +1 more source

UAV Tracking with Lidar as a Camera Sensor in GNSS-Denied Environments

2023 International Conference on Localization and GNSS (ICL-GNSS), 2023
LiDAR has become one of the primary sensors in robotics and autonomous system for high-accuracy situational awareness. In recent years, multi-modal LiDAR systems emerged, and among them, LiDAR-as-a-camera sensors provide not only 3D point clouds but also fixed-resolution 360°panoramic images by encoding either depth, reflectivity, or near-infrared ...
Sier Ha, Xianjia Yu, Iacopo Catalano, Jorge Peña Queralta, Zhuo Zou, Tomi Westerlund   +5 more
openaire   +4 more sources