Results 41 to 50 of about 14,954,531 (304)

CHANGE DETECTION IN PHOTOGRAMMETRIC POINT CLOUDS FOR MONITORING OF ALPINE, GRAVITATIONAL MASS MOVEMENTS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
This contribution discusses the accuracy and the applicability of Photogrammetric point clouds based on dense image matching for the monitoring of gravitational mass movements caused by crevices.
A. Dinkel   +4 more
doaj   +1 more source

INS-camera calibration without ground control points [PDF]

open access: yes2014 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

SAR Interferometric Baseline Refinement Based on Flat-Earth Phase without a Ground Control Point

open access: yesRemote Sensing, 2020
Interferometric baseline estimation is a key procedure of interferometric synthetic aperture radar (SAR) data processing. The error of the interferometric baseline affects not only the removal of the flat-earth phase, but also the transformation ...
Bing Xu   +4 more
doaj   +1 more source

DETECTION OF SLOPE MOVEMENT BY COMPARING POINT CLOUDS CREATED BY SFM SOFTWARE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper proposes movement detection method between point clouds created by SFM software, without setting any onsite georeferenced points. SfM software, like Smart3DCaputure, PhotoScan, and Pix4D, are convenient for non-professional operator of ...
K. Oda, S. Hattori, T. Takayama
doaj   +1 more source

Potential for Resurs DK-1 satellite data

open access: yesGeodesy and Cartography, 2012
The result of the research project funded by the Polish Ministry of Science and Higher Education is presented. The main aim of the project was the assessment of the new Russian satellite data for orthophoto generation.
Ireneusz Ewiak, Romuald Kaczynski
doaj   +1 more source

RESEARCH ON EVALUATION METHOD OF AIRBORNE LIDAR POSITIONING ACCURACY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Due to the semi-random characteristics of ground points collected by airborne LIDAR system, it is difficult to control the laser pin points to fall on the control points with known coordinates in actual measurement, so the accuracy can not be evaluated ...
Y. Zhang   +9 more
doaj   +1 more source

PRODUCT ACCURACY EFFECT OF OBLIQUE AND VERTICAL NON-METRIC DIGITAL CAMERA UTILIZATION IN UAV-PHOTOGRAMMETRY TO DETERMINE FAULT PLANE [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This study aims to see the effect of non-metric oblique and vertical camera combination along with the configuration of the ground control points to improve the precision and accuracy in UAV-Photogrammetry project.
C. Amrullah, D. Suwardhi, I. Meilano
doaj   +1 more source

GENCP: GAN-Based Ground Control Point Generation for Satellite Image Georeferencing

open access: yesRemote Sensing
Remote sensing has become a core technology for environmental and climate monitoring, supported by expanding sensor constellations, advanced processing capabilities, and coordination frameworks established by the European Space Agency (ESA), Global Earth
Elodie Guasch   +5 more
doaj   +1 more source

Accuracy of UAV-based DEMs without ground control points

open access: yesGeoInformatica, 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

Accurate disparity estimation in light field using ground control points [PDF]

open access: yesComputational 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.
Hao Zhu 0005, Qing Wang 0006
openaire   +2 more sources

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