Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Christina Grönwall"'
Autor:
Erik Zhang, Christina Grönwall, Fredrik Bissmarck, Michael Tulldahl, Joakim Rydell, Erika Bilock
Publikováno v:
2017 Workshop on Research, Education and Development of Unmanned Aerial Systems (RED-UAS).
We present two approaches for using imaging sensors on-board small unmanned aerial systems (UAS) for positioning and navigation. Two types of sensors are used; laser scanners and a camera operating in the visual wavelengths. The laser scanners produc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcd9cdb09ef0743e0e97925238370036
https://doi.org/10.1109/red-uas.2017.8101654
https://doi.org/10.1109/red-uas.2017.8101654
Autor:
Christina Grönwall, Henrik Petersson, Wilmuth Müller, R.J. Dekker, Achim Kuwertz, Frank Reinert, Maarten Ditzel
Publikováno v:
Steinvall, O.Kamerman, G., Electro-Optical Remote Sensing XI 2017. 11 September 2017 through 12 September 2017, 10434
Experiences from recent conflicts show the strong need for smart sensor suites comprising different multi-spectral imaging sensors as core elements as well as additional non-imaging sensors. Smart sensor suites should be part of a smart sensor networ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12babc0b6e32667dff8980e1d2671b99
http://resolver.tudelft.nl/uuid:d4383b07-47a4-40e8-bf8f-b7d74b61dfba
http://resolver.tudelft.nl/uuid:d4383b07-47a4-40e8-bf8f-b7d74b61dfba
Autor:
Christina Grönwall
Publikováno v:
SPIE Newsroom.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66d87d2bbabcc6b506c77a3ac4d776ba
https://doi.org/10.1117/2.1201604.006175
https://doi.org/10.1117/2.1201604.006175
Autor:
Gustav Tolt, Håkan Larsson, Jonas Nordlöf, Fredrik Bissmarck, Christina Grönwall, Michael Tulldahl
Publikováno v:
SPIE Proceedings.
The purpose of this study is to present and evaluate the benefit and capabilities of high resolution 3D data from unmanned aircraft, especially in conditions where existing methods (passive imaging, 3D photogrammetry) have limited capability. Example
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4a720efb793980cdd1f5093d4429556
https://doi.org/10.1117/12.2224258
https://doi.org/10.1117/12.2224258
Publikováno v:
Applied optics
Applied optics, Optical Society of America, 2016, 55 (20), p. 5292-5303. ⟨10.1364/AO.55.005292⟩
Applied optics, Optical Society of America, 2016, 55 (20), p. 5292-5303. ⟨10.1364/AO.55.005292⟩
International audience; We perform statistical analysis of data from active and passive imaging sensors in the near infrared (NIR) and short wavelength infrared (SWIR) wavelength bands. The data were obtained from measurements performed on clothing i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbb4739e6043f6f44094656d82095b91
https://publica.fraunhofer.de/handle/publica/244324
https://publica.fraunhofer.de/handle/publica/244324
Peak detection approaches for time-correlated single-photon counting three-dimensional lidar systems
Publikováno v:
Optical Engineering. 57:1
Time-correlated single-photon counting lidar provides very high-resolution range measurements, making the technology interesting for 3D imaging of objects behind foliage or other obscuration. We study six peak detection approaches and compare their p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6a79e6d7d1ddb7ec77a422960207cd4
https://doi.org/10.1117/1.oe.57.3.031306
https://doi.org/10.1117/1.oe.57.3.031306
Autor:
Håkan Larsson, Fredrik Bissmarck, Christina Grönwall, Markus Henriksson, Patrik Lif, Gustav Tolt, Per Wikberg, Michael Tulldahl, Mirko Thorstensson
Publikováno v:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications IX.
This paper summarizes on-going work on 3D sensing and imaging for unmanned aerial vehicles UAV carried laser sensors. We study sensor concepts, UAVs suitable for carrying the sensors, and signal processing for mapping and target detection application
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ab0b51ab8fa1c115a03b22436e677a4
https://doi.org/10.1117/12.2192834
https://doi.org/10.1117/12.2192834
Publikováno v:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications IX.
A UAV (Unmanned Aerial Vehicle) with an integrated lidar can be an efficient system for collection of high-resolution and accurate three-dimensional (3D) data. In this paper we evaluate the accuracy of a system consisting of a lidar sensor on a small
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f70433c576e066d30d0ed0ed6729a964
https://doi.org/10.1117/12.2194508
https://doi.org/10.1117/12.2194508
Publikováno v:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications IX.
Simultaneous localization and mapping (SLAM) is a well-known positioning approach in GPS-denied environments such as urban canyons and inside buildings. Autonomous/aided target detection and recognition (ATR) is commonly used in military application
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70eac3fb46099e17da6b1a90ace1a3c7
https://doi.org/10.1117/12.2192200
https://doi.org/10.1117/12.2192200
Publikováno v:
Electro-Optical Remote Sensing, Photonic Technologies, and Applications IX.
We present algorithm evaluations for ATR of small sea vessels. The targets are at km distance from the sensors, which means that the algorithms have to deal with images affected by turbulence and mirage phenomena. We evaluate previously developed alg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daeb6f4ff84001008c70ffefea036bde
https://doi.org/10.1117/12.2196278
https://doi.org/10.1117/12.2196278