ASSESSING THE ACCURACY OF UAV SURVEYS WITH DIFFERENT CONFIGURATIONS by A. Elaksher, D. Sanjenis, J. R. Velasco, M. Lao

“…Different ground control configurations were examined and ground check-points were used to evaluate the final accuracy of the geospatial products. …”
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Structure-from-Motion 3D Reconstruction of the Historical Overpass Ponte della Cerra: A Comparison between MicMac^® Open Source Software and Metashape^® by Matteo Cutugno, Umberto Robustelli, Giovanni Pugliano

“…In particular, 12 of these were used as ground control points to scale the 3D model, while the remaining 4 were used as check points to assess the quality of the scaling procedure by examining the residuals. …”
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PEP1 of Arabis alpina is encoded by two overlapping genes that contribute to natural genetic variation in perennial flowering. by Maria C Albani, Loren Castaings, Stefan Wötzel, Julieta L Mateos, Jörg Wunder, Renhou Wang, Mathieu Reymond, George Coupland

“…Environmental cues control key check points in both life histories. Genes controlling responses to these cues exhibit natural genetic variation that has been studied most in short-lived annuals. …”
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تقييم لتأثير كثافة النموذج الرقمي للأرض على دقة الإرجاع العامودي للصور الجوية by عمر الخليل, وائل ديوب

“…Verification of accuracy will be achieved by the of check points that have been obtained from aerial triangulation process of the used aerial images.…”
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COMBINED 360° VIDEO AND UAV RECONSTRUCTION OF SMALL-TOWN HISTORIC CITY CENTERS by M. Previtali, L. Cantini, L. Barazzetti

“…The results of the combined image orientation are validated by using ground truth data (Check Points) acquired with a total station. In contrast, the final 3D model reconstruction results are compared with a laser scanning acquisition of the building to evaluate the accuracy and completeness of the photogrammetric point cloud. …”
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THE SYSTEM OVERVIEW AND GEOMETRIC IMAGE QUALITY OF THE TH-1 SATELLITE by J. Wang, J. Wang, X. Hu

“…The GCPs are not participated the EFP Multi-functional bundle adjustment, and are only as Check Points (CPs) to evaluate the location accuracy. …”
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Improvement of Workflow for Topographic Surveys in Long Highwalls of Open Pit Mines with an Unmanned Aerial Vehicle and Structure from Motion by Ignacio Zapico, Jonathan B. Laronne, Lázaro Sánchez Castillo, José F. Martín Duque

“…Natural shapes were used as control/check points and were surveyed using a robotic total station with a coaxial camera. …”
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River mapping using digital imagery of unmanned aerial vechicle by Udin, Wani Sofia

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Basic fibroblast growth factor modulates cell cycle of human umbilical cord-derived mesenchymal stem cells. by Ramasamy, Rajesh, Tong, C. K., Yip, W. K., Vellasamy, S., Tan, B. C., Seow, Heng Fong

“…Consistent with this, bFGF was shown to promote expression of cyclin D proteins and their relevant kinases to drive UC-MSC to transverse cell cycle check points, thus, committing the cells to DNA synthesis. …”
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Quality assessments of unmanned aerial vehicle (UAV) and terrestrial laser scanning (TLS) methods in road cracks mapping. by Yi, Tan Jia, Ahmad, Anuar

“…The ground control points (GCPs) and check points (CPs) at the study areas were georeferenced by global navigation satellite system (GNSS) data with MyRTKNet and ISKnet connections. …”
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Assessment of photogrammetric mapping accuracy based on variation flying altitude using unmanned aerial vehicle by Udin, Wani Sofia, Ahmad, Anuar

“…Ground control points and check points were established using Total Station technique. …”
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Development of mapping procedures using digital imagery derived from unmanned aerial vehicle system by Sidek, Faizatul Khadijah, Ahmad, Anuar

“…Sufficient number of ground control and check points are established using Global Positioning System around the studied area. …”
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UAV PHOTOGRAMMETRY: BLOCK TRIANGULATION COMPARISONS by R. Gini, D. Pagliari, D. Passoni, L. Pinto, G. Sona, P. Dosso

“…Moreover, image and ground point coordinates obtained by the various software were independently used as initial values in a comparative adjustment made by scientific in-house software, which can apply constraints to evaluate the effectiveness of different methods of point extraction and accuracies on ground check points.…”
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INFLUENCE OF CO-ALIGNMENT PROCEDURES ON THE CO-REGISTRATION ACCURACY OF MULTI-EPOCH SFM POINTS CLOUDS by M. Saponaro, A. Capolupo, G. Caporusso, E. Tarantino

“…Given the independently or co-aligned processed multi-epoch datasets, mean errors (ME) and root-mean-square error (RMSE) on Check Points (CPs) were evaluated by adopting different georeferencing strategies. …”
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CLOSE-RANGE PHOTOGRAMMETRY METHOD FOR SF6 GAS INSULATED LINE (GIL) DEFORMATION MONITORING by K. N. Fauzan, D. Suwardhi, A. Murtiyoso, I. Gumilar, T. P. Sidiq

“…The simulation produced a configuration of control points, check points, and camera stations that have the best Strength of Figure (SoF) values. …”
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EVALUATION AND CALIBRATION OF FIXED-WING MULTISENSOR UAV MOBILE MAPPING SYSTEM: IMPROVED RESULTS by K. Bakuła, W. Ostrowski, M. Pilarska, M. Szender, Z. Kurczyński

“…Experiment data from Terrestrial Laser Scanning and check points measured with GPS RTK have been used. Finally, an accuracy of less than 10 cm was achieved for the DTM. …”
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Sediment source and volume of soil erosion in a gully system using UAV photogrammetry by Bernardo Moreira Cândido, Mike James, John Quinton, Wellington de Lima, Marx Leandro Naves Silva

“…The point clouds showed root mean square errors of order ~ 3 mm on xyz on check points. The spatial variation of precision along the gully ranged from 0.006 to 0.276 m, considering the M3C2-PM uncertainty values. …”
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PROPERTY OF THE LARGE FORMAT DIGITAL AERIAL CAMERA DMC II by K. Jacobsen, K. Neumann

“…A standard deviation of the object point heights below the GSD, determined at independent check points, even in blocks with just 20% side lap and 60% end lap is standard. …”
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Creating of digital surface model and orthophoto from ASTER satellite data and their application in land/water research by Dana Tollingerová, Karel Pavelka

“…The accuracy of the final DSM and orthophoto was tested on a set of 13 check points. The position standard error in DSM and orthophoto is approx. 15 m, i.e. just about the size of one pixel of the original data. …”
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ACCURACY OF MEASUREMENTS IN OBLIQUE AERIAL IMAGES FOR URBAN ENVIRONMENT by W. Ostrowski

“…To control the accuracy, check points were used (which were also measured with GPS RTK technology). …”
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