Zobrazeno 1 - 10
of 845
pro vyhledávání: '"G, Maas"'
Autor:
F. Liebold, H.-G. Maas
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-2-W7-2024, Pp 65-72 (2024)
In a perspective projection, a circular target appears as an ellipse for an oblique view. The ellipse center as a result of the image coordinate measurement differs from the projection of the circle center. This discrepancy is called eccentricity and
Externí odkaz:
https://doaj.org/article/3ba69f3b99ca4c3b8f327dae0fbc0486
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-2-2024, Pp 33-40 (2024)
Monitoring tree growth processes is relevant for ecological research and understanding the intricate relationship between vegetation and the environment. Time series analyses have revealed a correlation between leaf emergence timing and climate chang
Externí odkaz:
https://doaj.org/article/f9b45ed548694076aeb264fd8942343d
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-2-2024, Pp 289-295 (2024)
A common problem when imaging and measuring through moving water surfaces is the quasi-random refraction caused by waves. The article presents two strategies to overcome this problem by lowering the complexity down to a planer air/water interface pro
Externí odkaz:
https://doaj.org/article/fe99b197b4394d09beb30b8dccacc140
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-2-2024, Pp 341-348 (2024)
LiDAR bathymetry provides an efficient and comprehensive way to capture the topography of water bodies in shallow water areas. However, the penetration depth of this measurement method into the water column is limited by the medium water and water tu
Externí odkaz:
https://doaj.org/article/a51166fdd7ba4f768121f1c8bd411a69
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-2-2024, Pp 363-369 (2024)
If multimedia-photogrammetry is used for the generation of point clouds of submerged objects or of the water bottom, Snell’s law has to be considered. When the images are taken from air, image rays are refracted at the air-water interface. This res
Externí odkaz:
https://doaj.org/article/c51f2f282e7c4723829f1409e0a79129
Autor:
R. Blaskow, H.-G. Maas
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol X-2-2024, Pp 9-16 (2024)
Bridge structures can be surveyed using a number of different methods. Established are image-based methods using structure from motion by an unmanned aerial vehicle (UAV), terrestrial laser scanning (TLS), or a combination of both methods. Beyond sta
Externí odkaz:
https://doaj.org/article/e77778572623461a80f6d76c278ae9a0
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol X-2-2024, Pp 57-64 (2024)
The presented research investigates different strategies to acquire high-precision digital elevation models (DEMs) of complex and inaccessible terrain using Structure-from-Motion and Multi-View Stereo applied to data of an unoccupied aerial system (U
Externí odkaz:
https://doaj.org/article/e619dcd8ce2244af89a0489483e823ab
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol X-2-2024, Pp 113-120 (2024)
Robust and automated point cloud registration methods are required in many geoscience applications using multi-temporal and multi-modal 3D point clouds. Therefore, a 3D keypoint-based coarse registration workflow has been implemented, utilizing the I
Externí odkaz:
https://doaj.org/article/c6fd52494e09401f85be7bd70e6c12ed
Autor:
F. Wagner, H.-G. Maas
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-1-W2-2023, Pp 1667-1676 (2023)
This study investigates the performance of eight different deep learning architectures for voxel segmentation in volume images. The motivation is to segment carbon in carbon reinforced concrete (CRC) in micro-tomography (μ-CT) data. Although there a
Externí odkaz:
https://doaj.org/article/5f8f27a739814f348fe53fcd4692bb46
Autor:
Tina Krueger, Janelle van den Heuvel, Vivian van Kampen-van den Boogaart, Roel van Zeeland, D. Jannet Mehagnoul-Schipper, Dennis G. Barten, Lieve Knarren, Arno F. G. Maas, Caroline E. Wyers, Debbie Gach, Annemie M. W. J. Schols, Rosanne J. H. C. G. Beijers, Joop P. van den Bergh, Frits H. M. van Osch
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-8 (2023)
Abstract Some COVID-19 survivors suffer from persistent pulmonary function impairment, but the extent and associated factors are unclear. This study aimed to characterize pulmonary function impairment three to five months after hospital discharge and
Externí odkaz:
https://doaj.org/article/98737c29297c47508c636234bbcaaf82