Results 161 to 170 of about 1,854 (193)

A 500-m Agricultural Drought Impact Dataset in China's Main Grain Region: Toward Impact-Based Drought Monitoring. [PDF]

Sci Data
Shi J, Sang YF, AghaKouchak A, Dash SS, Chan FKS.   +4 more
europepmc   +1 more source

In the tracks of a whale: inferring size class, orientation and swimming speed from thermal flukeprints. [PDF]

J Exp Biol
Laporte-Devylder L, Midtiby HS, Wahlberg M.   +2 more
europepmc   +1 more source

The Very Long-term Iberian Fish Database Archaeological Fish Occurrences within the Iberian Peninsula. [PDF]

Sci Data
Gabriel S, Barrett JH, Sillero N, Santos RS, Tavares A.   +4 more
europepmc   +1 more source

Problems in Direct-Georeferencing by INS/DGPS in the Airborne Environment

, 1999
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Theory and reality of direct georeferencing in national coordinates

ISPRS Journal of Photogrammetry and Remote Sensing, 2008
This paper focuses on the transformation of the sensor's exterior orientation parameters obtained by direct georeferencing (DG) to national reference frames and their subsequent projection for mapping purposes. The required steps are explained and the emphasis is put on the minimization of distortions arising from the curvature of the earth and the ...
Jan Škaloud
exaly   +3 more sources

Direct georeferencing of airborne pushbroom images

Journal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an, 2015
Direct georeferencing (DG) for orthoimage production based on collinearity equations has emerging as a standard photogrammetric operation. In this paper, the basic idea of DG is realized and refined with 19 self-calibration parameters for rectifying airborne pushbroom hyperspectral images collected using the intelligent spectral imaging system (ISIS ...
Ching-Kuo Yeh, Victor J.D. Tsai
exaly   +2 more sources

Approximate direct georeferencing in national coordinates

ISPRS Journal of Photogrammetry and Remote Sensing, 2006
Abstract Direct georeferencing has gained an increasing importance in photogrammetry and remote sensing. Thereby, the parameters of exterior orientation (EO) of an image sensor are determined by GPS/INS, yielding results in a global geocentric reference frame.
exaly   +2 more sources

Direct georeferencing of airborne LiDAR data in national coordinates

ISPRS Journal of Photogrammetry and Remote Sensing, 2013
Abstract 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
exaly   +2 more sources

Error model of direct georeferencing procedure of terrestrial laser scanning

Automation in Construction, 2017
Abstract 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. This paper focuses on defining the error model of point positions obtained through a “station-orientation” procedure of direct georeferencing.
Marko Pejic, Branko Bozic
exaly   +3 more sources