Results 71 to 80 of about 2,732 (249)

EVALUATION OF ASTER GDEM V3 USING ICESAT LASER ALTIMETRY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
We have used a set of Ground Control Points (GCPs) derived from altimetry measurements from the Ice, Cloud and land Elevation Satellite (ICESat) to evaluate the quality of the 30 m posting ASTER (Advanced Spaceborne Thermal Emission and Reflection ...
C. C. Carabajal, J.-P. Boy
doaj   +1 more source

Pharmacokinetics of Intravenous Melatonin in Preschool‐Aged Pediatric Surgical Patients

Pediatric Anesthesia, EarlyView.
ABSTRACT Background Melatonin may have several beneficial clinical effects in the perioperative setting. In children, it has been studied for preoperative anxiety, postoperative pain, and emergence delirium. Melatonin's pharmacokinetic profile is well‐known in adults, but data in young children are sparse.
Anne Louise de Barros Garioud, Arash Afshari, Lau Romlund Halgreen, Kristian Østergaard Nielsen, Lars Peter Kloster Andersen   +4 more
wiley   +1 more source

Validation of a Particle Image Velocimetry Algorithm Through Comparative Field and Laboratory Analysis

River Research and Applications, EarlyView.
ABSTRACT Flow velocity measurement is fundamental to hydrological and hydraulic studies, providing essential data for streamflow estimation and river dynamics analysis. Traditional in situ methods like propeller gauges and acoustic Doppler current profilers are accurate but intrusive and labour‐intensive, while non‐intrusive image processing methods ...
Ghazaleh Nassaji Matin, Gareth Bradbury, Alan Puttock, Kirsty Frith, Diego Panici   +4 more
wiley   +1 more source

Accuracy Analysis of a Dam Model from Drone Surveys

Sensors, 2017
This paper investigates the accuracy of models obtained by drone surveys. To this end, this work analyzes how the placement of ground control points (GCPs) used to georeference the dense point cloud of a dam affects the resulting three-dimensional (3D ...
Elena Ridolfi, Giulia Buffi, Sara Venturi, Piergiorgio Manciola   +3 more
doaj   +1 more source

Digitalisasi Pemetaan Topografi menggunakan Alat Drone serta Perhitungan Ketelitian dengan Ground Control Point (Gcp)

Jurnal Teknik Sipil Terapan
Perkembangan teknologi telah mendorong penggunaan drone untuk pemetaan topografi yang hemat biaya dan waktu. Pada penelitian yang dilakukan di area pengembangan perumahan Citraland Winangun, dilakukan penentuan kondisi topografi dan keakuratan proses pemetaan menggunakan drone dengan Ground Control Point (GCP).
Anastasya G.O Piyoh, I Gede Yohan Kafrain, Fenny Moniaga   +2 more
openaire   +1 more source

Effect of the sampling design of ground control points on the geometric correction of remotely sensed imagery

, 2012
The acquirement of ground control points (GCPs) is a basic and important step in the geometric correction of remotely sensed imagery. In particular, the spatial distribution of GCPs may affect the accuracy and quality of image correction.
Heuvelink, G.B.M., Ge, Y, Zhou, C., Brus, D.J., Brus, D, Wang, J., Ge, Y., Zhou, CH, Heuvelink, GBM, Wang, JH(王江浩)   +9 more
core   +2 more sources

Influence of flight altitude and control points in the georeferencing of images obtained by unmanned aerial vehicle

European Journal of Remote Sensing, 2021
This study aimed to explore the influence of flight altitude, density, and distribution of ground control points (GCPs) on the digital terrain model (DTM) in surveys conducted by unmanned aerial vehicles (UAVs).
Lucas Santos Santana, Gabriel Araújo E Silva Ferraz, Diego Bedin Marin, Brenon Dienevam Souza Barbosa, Luana Mendes Dos Santos, Patrícia Ferreira Ponciano Ferraz, Leonardo Conti, Stefano Camiciottoli, Giuseppe Rossi   +8 more
doaj   +1 more source

Automated object detection based on YOLOv11 for monitoring benthic population dynamics: A new approach combining photogrammetry and open‐source GIS tools applied to sea cucumbers

Remote Sensing in Ecology and Conservation, EarlyView.
This research established a new object detection model based on YOLOv11 to recognise benthic organisms, specifically sea cucumbers, by utilising high‐resolution photogrammetric‐based orthomosaics acquired along infralittoral Mediterranean Sea beds. The model demonstrated impressive performance metrics and, when combined with the Deepness plugin for the
Gian Mario Sangiovanni, Giovanna Jona Lasinio, Daniele Poggio, Gianluca Mastrantonio, Alessio Pollice, Arnold Rakaj, Midhun Mohan, Stefano Moro, Edoardo Casoli, Daniele Ventura   +9 more
wiley   +1 more source

Evaluation of Control Points’ Distribution on Distortions and Geometric Transformations for Aerial Images Rectification [PDF]

, 2012
Geometric distortions are inevitable in aerial images. A raw uncalibrated aerial image acquired from a non-metric digital camera which carried by an aircraft normally has lens and perspective distortions and could not be used directly without undergoing ...
Lee, Hung Liew, Yin, Chai Wang, WaiShiang, Cheah   +2 more
core   +2 more sources

Deep learning‐based super‐resolution reconstruction and improved YOLOv9 for efficient benthos detection: a case study at Lake Hamana, Japan

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a UAV‐based framework that integrates deep learning‐based super‐resolution reconstruction and an enhanced YOLO detector to improve centimetre‐scale benthic organism monitoring. Using hermit crabs in Lake Hamana, a coastal lagoon in Japan, as a case study, the method substantially enhanced small‐object detection performance ...
Fan Zhao, Bangzhang Ma, Dianhan Xi, Jiaqi Wang, Yijia Chen, Yongying Liu, Xinlei Shao, Mowen Zhang, Guocheng Zhang, Jundong Chen, Katsunori Mizuno   +10 more
wiley   +1 more source