Results 11 to 20 of about 515 (126)
Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing [PDF]
European Journal of Remote Sensing, 2017 The georeferencing process is crucial to the accuracy of terrestrial laser scanner (TLS) data, in particular in the context of diachronic studies relying on multi-temporal surveys. The use of Ground Control Points in the georeferencing process can however be complex when confronted with the practical constraints of coastal surveying. A simple and quick
Nicolas Le Dantec +2 more
exaly +5 more sources
Indirect UAV Strip Georeferencing by On-Board GNSS Data under Poor Satellite Coverage [PDF]
Remote Sensing, 2019 The so-called Real Time Kinematic (RTK) option, which allows one to determine with cm-level accuracy the Unmanned Aerial Vehicles (UAV) camera position at shooting time, is also being made available on medium- or low-cost drones. It can be foreseen that a sizeable amount of UAV surveys will be soon performed (almost) without Ground Control Points (GCP).
Gianfranco Forlani +2 more
exaly +6 more sources
Journal of Engineering, 2011 This paper compares between the direct and indirect georeferencing techniques in Photogrammetry bases on a simulation model. A flight plan is designed which consists of three strips with nine overlapped images for each strip by a (Canon 500D) digital camera with a resolution of 15 Mega Pixels. The triangulation computations are carried ...
H. Alwan, B. Saleem, L. Khalid
openaire +3 more sources
Comparison of Direct and Indirect Georeferencing Methods Using Satellite Linear Array Iimages [PDF]
فصلنامه علوم و فناوری فضایی, 2015 Comparison of direct and indirect methods for georeferencing of satellite linear array stereo images is proposed in this paper. In direct method, collinear condition and orbital elements are used for geolocation of pixels and ground control points (GCPs) are used in indirect method.
Ahmad Izadipour +3 more
openaire +1 more source
Direct Georeferencing of Stationary LiDAR
Remote Sensing, 2009 Unlike mobile survey systems, stationary survey systems are given very little direct georeferencing attention. Direct Georeferencing is currently being used in several mobile applications, especially in terrestrial and airborne LiDAR systems ...
Ahmed Mohamed, Benjamin Wilkinson
exaly +3 more sources
Serum geoepidemiology of leprosy biomarkers in a city-wide COVID-19 survey in Brazil [PDF]
BMC Infectious DiseasesBackground COVID-19 has created a significant global health emergency and triggered numerous seroepidemiological field tracing initiatives. The use of these samples becomes a timely tool for intensifying active case finding and early diagnosis of leprosy.
Filipe Rocha Lima +9 more
doaj +2 more sources
Accuracy assessment of high-resolution terrain data produced from UAV images georeferenced with on-board PPK positioning [PDF]
Journal of the Bulgarian Geographical Society, 2023 In recent years, unmanned aerial vehicles (UAVs) have increased rapidly and successfully established themselves as a tool for the rapid collection of high-resolution images as baseline data in land cover studies and topographic mapping. In photogrammetry
Davis Dinkov
doaj +3 more sources
Improving Linear Projects Georeferencing to Create Digital Models Using UAV Imagery [PDF]
E3S Web of Conferences, 2021 Global Positioning System (GPS) on Unmanned Aerial Vehicles (UAV) platform relies on Micro Electro Mechanical Systems (MEMS) technology with a precision of 10 m at shooting time at UAV camera stations positions.
Elsheshtawy Amr M., Gavrilova Larisa A.
doaj +1 more source
TERRESTRIAL 3D MAPPING OF FORESTS: GEOREFERENCING CHALLENGES AND SENSORS COMPARISONS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Terrestrial 3D reconstruction is a research topic that has recently received significant attention in the forestry sector. This practice enables the acquisition of high-quality 3D data, which can be used not only to derive physical forest criteria such ...
C. R. Fol +4 more
doaj +1 more source
PPK PROCESSING TO BOOST UAS ACCURACY IN CADASTRAL MAPPING [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Unmanned Aerial Systems (UAS) are increasingly used in different applications, including 3D urban modelling, cadastral mapping, urban planning, GIS information system and other fields because of their advantages.
V. E. Oniga +8 more
doaj +1 more source