Results 41 to 50 of about 23,753 (298)

Investigating the Length, Area and Volume Measurement Accuracy in UAV-Based Oblique Photogrammetry Models produced with and without Ground Control Points

open access: yesInternational Journal of Engineering and Geosciences, 2021
This study was aimed to investigate the performance and sensitivity of a 3D photogrammetric model generated without GCPs (Ground Control Points).
E. Maraş, M. Nasery
semanticscholar   +1 more source

GEOMETRIC CALIBRATION OF ZIYUAN-3 THREE-LINE CAMERAS COMBINING GROUND CONTROL POINTS AND LINES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Due to the large biases between the laboratory-calibrated values of the orientation parameters and their in-orbit true values, the initial direct georeferencing accuracy of the Ziyuan-3 (ZY-3) three-line camera (TLC) images can only reach the kilometre ...
J. Cao   +4 more
doaj   +1 more source

On-orbit Geometric Calibration and Preliminary Accuracy Evaluation of GF-14 Satellite [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2023
GF-14 satellite is a new generation of sub-meter stereo surveying and mapping satellite in China, carrying dual-line array stereo mapping cameras to achieve 1:10000 scale topographic mapping without Ground Control Points (GCPs). In fact, space-based high-
Xueliang LU, Jianrong WANG, Xiuce YANG, Yuan LYU, Yan HU, Bincai CAO, Junming ZHOU
doaj   +1 more source

Pemanfaatan Teknologi Drone Dalam Pemetaan Digital (Fotogrametri) Menggunakan Kerangka Ground Control Point (GCP) di Daerah Irigasi Waibu Distrik Salawati Tengah

open access: yesMusamus Journal of Civil Engineering, 2023
Daerah irigasi di Indonesia dengan  perencanaan pengembangan lahan pertanian, diharapkan dapat meningkatkan produktivitas dan produksi pertanian di daerah irigasi tersebut serta dapat memberikan manfaat ekonomi bagi masyarakat sekitar. Mobilitas penduduk dengan peningkatan kebutuhan transportasi, dan kompleksitas lahan berdampak pada penurunan kualitas
Anang Widianto   +3 more
openaire   +1 more source

Coseismic surface deformation from air photos: The Kickapoo step over in the 1992 Landers rupture [PDF]

open access: yes, 2006
Coseismic deformation of the ground can be measured from aerial views taken before and after an earthquake. We chose the area of the Kickapoo-Landers step over along the 1992 Landers earthquake zone, using air photos (scale 1:40,000) scanned at 0.4 m ...
Avouac, Jean-Philippe, Michel, Rémi
core   +1 more source

Predicting growing stock volume of Eucalyptus plantations using 3-D point clouds derived from UAV imagery and ALS data [PDF]

open access: yes, 2019
Estimating forest inventory variables is important in monitoring forest resources and mitigating climate change. In this respect, forest managers require flexible, non-destructive methods for estimating volume and biomass.
Botequim, Brigite   +8 more
core   +2 more sources

An automatic high precision registration method between large area aerial images and aerial light detection and ranging data [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The integration of digital aerial photogrammetry and Light Detetion And Ranging (LiDAR) is an inevitable trend in Surveying and Mapping field. We calculate the external orientation elements of images which identical with LiDAR coordinate to realize ...
Q. Du, D. Xie, Y. Sun
doaj   +1 more source

ANALISIS PENGARUH SEBARAN GCP (GROUND CONTROL POINT) TERHADAP AKURASI HASIL ORTHOPHOTO DI PIT CENDANA PT KALIMANTAN PRIMA PERSADA SITE BRE [PDF]

open access: yesJurnal GEOSAPTA, 2019
Kelemahan dari foto udara adalah masih belum didapatkannya cara yang bisa membuat tingkat akurasi dari hasil proses foto udara itu sendiri menjadi memilki tingkat akurasi yang tinggi dan masih belum bisa diperkirakan seberapa baik tingkat akurasi yang akan didapatkan dari proses foto udara itu sendiri. Namun keuntungan dari foto udara ini sendiri yaitu
Suhadi Suhadi   +2 more
openaire   +1 more source

Minimizing the residual topography effect on interferograms to improve DInSAR results: estimating land subsidence in Port-Said City, Egypt [PDF]

open access: yes, 2017
The accurate detection of land subsidence rates in urban areas is important to identify damage-prone areas and provide decision-makers with useful information.
Darwish, Noura   +2 more
core   +2 more sources

UAV Photogrammetry Accuracy Assessment for Corridor Mapping Based on the Number and Distribution of Ground Control Points

open access: yesRemote Sensing, 2020
Unmanned aerial vehicle (UAV) photogrammetry has recently emerged as a popular solution to obtain certain products necessary in linear projects, such as orthoimages or digital surface models. This is mainly due to its ability to provide these topographic
Ezequiel Ferrer-González   +3 more
semanticscholar   +1 more source

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