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Extraction of ground control points (GCPs) from synthetic aperture radar images and SRTM DEM

International Journal of Remote Sensing, 2006
Qualified ground control points (GCPs) are crucial in the geolocation of a remotely sensed image. If a region has no published map, the geographical coordinates of GCPs must be obtained indirectly. Although these can be re‐constructed from a synthetic aperture radar (SAR) image using sensor position and velocity, this conventional method does not ...
Hyung-Sup Jung, Joong-Sun Won
exaly   +3 more sources

Extraction of ground control points (GCPs) from synthetic aperture radar image using DEM

IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
Synthetic aperture radar (SAR) data have serious geometric distortions caused by inherent side looking geometry and are usually corrupted by speckle noises so that it is difficult to identify ground control points (GCPs). The location of the pixel in a given SAR image can be derived from the knowledge of sensor position and velocity.
Sang-Hoon Hong   +3 more
openaire   +2 more sources

Role of Ground Control Points (GCPs) in Integration of Terrestrial Laser Scanner (TLS) and Close-range Photogrammetry (CRP)

Lecture Notes in Civil Engineering, 2019
The need for GCPs is increasingly more important with the increase in higher accuracy requirements and increase in user expectations. GCPs (Ground control points) are necessary for orientation and placement of photographs and 3D models in the spatial coordinate system, and they play a key role in co-registration of two point clouds.
Yogender   +2 more
openaire   +2 more sources

Comparative Study of UAV Mapping with and without Ground Control Points (GCPs)

International Journal of Geoinformatics
Unmanned Aerial Vehicles (UAVs) have transformed geospatial data acquisition, yet the necessity of Ground Control Points (GCPs) for spatial accuracy versus operational efficiency remains a critical topic of investigation. This study presents a comparative analysis of UAV mapping accuracies achieved with and without the integration of GCPs. Conducted at
P. Thammaboribal
openaire   +2 more sources

USING GROUND CONTROL POINTS (GCP) AND UAV POIND CLOUD PROCESSIN� IN WATER MANAGEMENT

SGEM International Multidisciplinary Scientific GeoConference� EXPO Proceedings, 2022
Using aerial vehicles without pilot (UAV-unmanned aerial vehicle) or Drone has seen a rapid development, over the last decade, in order to obtain spatial information of the Earth's surface. This scientific paper was realized for the Hydrotechnical Node of Costei, from Timis County and has as purpose the processing of aerial images, obtained from a ...
Adrian Smuleac   +4 more
openaire   +1 more source

Optimal Choice of the Number of Ground Control Points for Developing Precise DSM Using Light-Weight UAV in Small and Medium-Sized Open-Pit Mine

Archives of Mining Sciences, 2023
uAV technology is being applied for DSM generation in open-pit mines with a well-established fact that the precision of such DSM is improved by increasing the number of ground control points (gcps).
N. Long   +6 more
semanticscholar   +1 more source

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