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DIRECT GEOREFERENCING OF UAV DATA BASED ON SIMPLE BUILDING STRUCTURES
image orientation structure from motion tie points building structures
2016/7/5
Unmanned Aerial Vehicle (UAV) data acquisition is more flexible compared with the more complex traditional airborne data acquisition. This advantage puts UAV platforms in a position as an alternative ...
ACCURACY ASSESSMENT OF DIRECT GEOREFERENCING FOR PHOTOGRAMMETRIC APPLICATIONS ON SMALL UNMANNED AERIAL PLATFORMS
Unmanned Aerial Vehicle UAV Direct Georeferencing GNSS Inertial Mapping
2016/3/25
Efficient mapping from unmanned aerial platforms cannot rely on aerial triangulation using known ground control points. The cost and time of setting ground control, added to the need for increased ove...
Comparison of Orthorectification Methods Suitable for Rapid Mapping Using Direct Georeferencing and RPC for Optical Satellite Data
Registration Orthorectification Orthoimage Direct Georeferencing Rational Polynomial Function Experience
2015/12/18
One of the first essential steps in response to a crisis event is to provide current, precise, and rapid information about the extent of the event, the affected population and infrastructure (e.g., in...
Theoretical Accuracy of Direct Georeferencing with Position and Orientation System in Aerial Photogrammetry
Aerial Photogrammetry GPS/INS Orientation Accuracy Error Algorithms
2015/11/23
According to the principle of space intersection、collinearity equations and error propagation law, mathematical models of theoretical accuracy of direct georeferencing are proposed in this paper. The ...
DIRECT GEOREFERENCING OF DIGITAL CAMERA IMAGES FOR STEREO PLOTTING
direct georeferencing digital aerial camera UltraCamD GPS/IMU calibration
2015/9/17
In the years of 2004 to 2006, the Portuguese authority for forestry, the Direcção Geral dos Recursos Florestais (DGRF) ordered a digital photo flight over the whole country. The images, acqu...
THE DIRECT GEOREFERENCING APPLICATION AND PERFORMANCE ANALYSIS OF UAV HELICOPTER IN GCP-FREE AREA
GeoSat Informatics Technology Corporation National Cheng Kung University The University of Calgary Purdue University
2015/9/10
There are many disasters happened because the weather changes extremely in these years. To facilitate applications such as environment detection or monitoring becomes very important. Therefore, the de...
DIRECT GEOREFERENCING ON SMALL UNMANNED AERIAL PLATFORMS FOR IMPROVED RELIABILITY AND ACCURACY OF MAPPING WITHOUT THE NEED FOR GROUND CONTROL POINTS
Unmanned Aerial Vehicle UAV Direct Georeferencing GNSS Inertial Mapping Photogrammetry
2015/9/10
This paper presents results from a Direct Mapping Solution (DMS) comprised of an Applanix APX-15 UAV GNSS-Inertial system integrated with a Sony a7R camera to produce highly accurate ortho-rectified i...
The dss 322 airborne mapping system: a versatile fusion of digital photogrammetric sensing with direct georeferencing
airborne mapping system versatile fusion digital photogrammetric sensing direct georeferencing
2015/9/1
Direct Georeferencing of photogrammetric sensors was first pioneered on aerial film cameras in the late 1980s’ and early 1990’s in the academia. On one hand, highly accurate, decimetre lev el differen...
DIRECT GEOREFERENCING OF TLS IN SURVEYING OF COMPLEX SITES
Terrestrial Laser Scanning Direct Georeferencing Architectural Surveying Civil Surveying Tunnel
2015/8/7
The high powerfulness of TLS technique for quick 3D data acquisition is extending its use to many fields. To further reduce the
surveying time and to simplify all operational tasks, the TLS direct g...
On Improved Gravity Modeling Supporting Direct Georeferencing of Multisensor Systems
GPS/INS navigation calibration
2015/7/15
Typically, inertial navigation systems assume the gravity field to be normal (ellipsoidal), meaning that the deflections of the vertical
(DOV) are ignored in the gravity compensation procedure. This ...
A Low-coast Mms Integrating Gps, Digital Compass and A Camera To the Direct Georeferencing of Digital Images
Mobile Mapping System Digital Photogrammetry GPS
2015/7/15
A low-cost, easily transportable Mobile Mapping System (MMS) was designed and built to obtain the direct georeferencing parameters
of images; its components are a GPS receiver, a digital compass and ...
EXPERIMENTAL STUDY OF DIRECT GEOREFERENCING SYSTEM (DGS) FOR LARGE-SCALE MAPPING
adjustment camera GPS IMU triangulation
2015/6/1
Presently for the orthophoto projects and small-scale mapping (e.g., 1:2,500) the aerial triangulation is no longer essential while
Direct Georeferencing System (DGS) is available as a complementary...
INITIAL RESULTS OF THE ITALIAN PROJECT ON DIRECT GEOREFERENCING IN AERIAL PHOTOGRAMMETRY
Photogrammetry, GPS/INS, analysis
2015/6/1
The paper describes one of the first outcomes of an Italian national research Project on inertial positioning in photogrammetry. The
focus of the paper is on the quality which is attainable from dir...
IN-FLIGHT CAMERA CALIBRATION FOR DIRECT GEOREFERENCING
Accuracy Calibration Camera Georeferencing GPS/INS Orientation
2015/5/29
Direct georeferencing is increasingly applied in connection of the photogrammetric film cameras. The prerequisite for the use of this technique is an airborne system calibration. The calibration issue...
A PROGRAM FOR DIRECT GEOREFERENCING OF AIRBORNE AND SPACEBORNE LINE SCANNER IMAGES
orthoimage direct georeferencing geometric rectification airborne and spaceborne line scanner
2015/5/12
For high quality direct georeferencing it is important that all geometric parameters influencing the rectification process are taken into
account. These parameters are the exterior and interior orien...