@ARTICLE{Lenda_G._Accuracy_2019,
 author={Lenda, G. and Lewińska, P. and Siwiec, J.},
 volume={Vol. 65},
 number={No 4},
 journal={Archives of Civil Engineering},
 pages={229-248},
 howpublished={online},
 year={2019},
 publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES},
 abstract={The research was aimed at analysing the factors that affect the accuracy of merging point clouds when scanning over longer distances. Research takes into account the limited possibilities of target placement occurring while scanning opposite benches of quarries or open-pit mines, embankments from opposite banks of rivers etc. In all these cases, there is an obstacle/void between the scanner and measured object that prevents the optimal location of targets and enlarging scanning distances. The accuracy factors for cloud merging are: the placement of targets relative to the scanner and measured object, the target type and instrument range. Tests demonstrated that for scanning of objects with lower accuracy requirements, over long distances, it is optimal to choose flat targets for registration. For objects with higher accuracy requirements, scanned from shorter distances, it is worth selecting spherical targets. Targets and scanned object should be on the same side of the void.},
 type={Article},
 title={Accuracy of merging point clouds at the maximum range of a scanner with limited possibilities of target placement},
 URL={http://ochroma.man.poznan.pl/Content/115701/PDF-MASTER/15_ace-2019-0057.pdf},
 keywords={laser scanning, long range, targets, registration accuracy, point cloud},
}