Results 1 to 10 of about 494 (108)

Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing [PDF]

open access: yesEuropean 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.
Marion Jaud   +8 more
doaj   +5 more sources

SIMULATION MODEL FOR THE ASSESSMENT OF DIRECT AND INDIRECT GEOREFERENCING TECHNIQUES IN ANALYTICAL PHOTOGRAMMETRY

open access: yesJournal 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 ...
H. Alwan, B. Saleem, L. Khalid
doaj   +2 more sources

Indirect UAV Strip Georeferencing by On-Board GNSS Data under Poor Satellite Coverage [PDF]

open access: yesRemote 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.
Gianfranco Forlani   +3 more
doaj   +3 more sources

Direct Georeferencing of Stationary LiDAR

open access: yesRemote 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
doaj   +3 more sources

Comparison of Direct and Indirect Georeferencing Methods Using Satellite Linear Array Iimages [PDF]

open access: yesفصلنامه 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)
Ahmad Izadipour   +3 more
doaj   +1 more source

Accuracy analysis of indirect georeferencing about TH-1 satellite in Weinan test area

open access: yesIOP Conference Series: Earth and Environmental Science, 2014
Optical linear scanning sensors can be divided into single-lens sensors and multi-lens sensors according to the number of lenses. In order to build stereo imaging, for single-lens optical systems such as aerial mapping camera ADS40 and ADS80, there are more than two parallel linear arrays placed on the focal plane.
Hu Haiyan
exaly   +2 more sources

Serum geoepidemiology of leprosy biomarkers in a city-wide COVID-19 survey in Brazil [PDF]

open access: yesBMC Infectious Diseases
Background 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]

open access: yesJournal 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]

open access: yesE3S 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]

open access: yesThe 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

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