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Accurate direct georeferencing of aerial imagery in national coordinates
ISPRS Journal of Photogrammetry and Remote Sensing, 2015In aerial photogrammetry, data products are commonly needed in national coordinates, and, in practice, the georeferencing is often performed in the required national map projection frame directly. However, as a map projection frame is not Cartesian, some additional corrections are necessary in the georeferencing process to take account of various map ...
Yongjun Zhang +2 more
exaly +2 more sources
Direct georeferencing of oblique and vertical imagery in different coordinate systems
ISPRS Journal of Photogrammetry and Remote Sensing, 2014Reconstruction of 3D models through integrating vertical and oblique imagery has been studied extensively. For a 3D reconstruction, object point cloud coordinates could be calculated using direct georeferencing (DG) obtained from the direct orientation data of a GPS/INS system.
Changshan Wu +2 more
exaly +2 more sources
Error model of direct georeferencing procedure of terrestrial laser scanning
Automation in Construction, 2017 Processing of raw point cloud data obtained as a result of terrestrial laser scanning (TLS) sometimes involves georeferencing, i.e. transformation of point cloud data to an external coordinate system.
Marko Pejic, Branko Bozic
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Direct Georeferencing of Ultrahigh-Resolution UAV Imagery
IEEE Transactions on Geoscience and Remote Sensing, 2014Micro-unmanned aerial vehicles often collect a large amount of images when mapping an area at an ultrahigh resolution. A direct georeferencing technique potentially eliminates the need for ground control points. In this paper, we developed a camera-global positioning system (GPS) module to allow the synchronization of camera exposure with the airframe ...
Darren Turner +2 more
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A Comparison of Direct Georeferencing and GPS-supported AT
2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006One of the major tasks in the evaluation process of photogrammetry is the determination of the exterior orientation. Direct Georeferencing (DG) and GPS-supported AT provide new methods for this task in addition to conventional AT. A test flight was performed with two methods DG and GPS supported AT.
D. Guo, L. Wu, Q. Li, J. Wang, X. Zheng
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Resection method for direct georeferencing in Terrestrial Laser Scanner
Journal of Mining and Earth Sciences, 2022Recently, the direct georeferencing method has been increasingly used in Terrestrial Laser Scanner (TLS). This method has the benefit of saving time, but the low accuracy is a great difficulty to use. This paper proposed a possible approach for direct georeferencing with high accuracy using the resection method.
Dung Trung Pham +5 more
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A precise direct georeferencing system for UAVs
2014Abstract
Eling, Christian +2 more
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Direct georeferencing of airborne LiDAR data in national coordinates
ISPRS Journal of Photogrammetry and Remote Sensing, 2013Abstract The topographic mapping products of airborne light detection and ranging (LiDAR) are usually required in the national coordinates (i.e., using the national datum and a conformal map projection). Since the spatial scale of the national datum is usually slightly different from the World Geodetic System 1984 (WGS 84) datum, and the map ...
Yongjun Zhang, Xiang Shen
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Direct georeferencing of ADS40 using calibrated POS data
2011 International Conference on Multimedia Technology, 2011The ADS40 is airborne three-line-push broom imaging sensor integrated with POS, which developed by L. H. Corporation. Due to the accuracy of POS, especially the accuracy of orientation cannot meet the requirement for large scale mapping. This paper provides mathematical model for POS data calibration using a few GCPs.
null Li ran, null Sun ke
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Accuracy of direct georeferencing strategies to monitor geomorphological features
2022<p>Geomorphic systems face significant changes of climate, land uses, vegetation cover and socio-demographic characteristics. In this context, the accurate monitoring of geomorphological features may be a relevant tool to understand the consequences and the risks of these changes.
Álvaro Gómez-Gutiérrez +3 more
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