Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Ulla Pyysalo"'
Autor:
Anssi Krooks, Ants Vain, Antero Kukko, Mikko Kaasalainen, Juha Hyyppä, Ulla Pyysalo, Sanna Kaasalainen
Publikováno v:
Sensors, Vol 11, Iss 11, Pp 10586-10602 (2011)
Radiometric calibration of airborne laser scanning (ALS) intensity data aims at retrieving a value related to the target scattering properties, which is independent on the instrument or flight parameters. The aim of a calibration procedure is also to
Externí odkaz:
https://doaj.org/article/e3da93094a164e5bbd068918e0f6cc66
Publikováno v:
Sensors, Vol 9, Iss 4, Pp 2780-2796 (2009)
We have studied the possibility of calibrating airborne laser scanning (ALS) intensity data, using land targets typically available in urban areas. For this purpose, a test area around Espoonlahti Harbor, Espoo, Finland, for which a long time series
Externí odkaz:
https://doaj.org/article/58e3b12fa8c848a7a9062a61a167700e
Autor:
Ulla Pyysalo, Juha Oksanen
Publikováno v:
Cartography and Geographic Information Science. 40:165-171
This paper compares several different visual highlighting methods that are applied to spatio-temporal data to support analytical reasoning based on situation awareness maps. In our work, visual hig...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b86eeae64b472d0fbd71836d2dbc728
https://doi.org/10.1080/15230406.2013.803706
https://doi.org/10.1080/15230406.2013.803706
Publikováno v:
Sensors (Basel, Switzerland)
Sensors, Vol 9, Iss 4, Pp 2780-2796 (2009)
Sensors; Volume 9; Issue 4; Pages: 2780-2796
Sensors, Vol 9, Iss 4, Pp 2780-2796 (2009)
Sensors; Volume 9; Issue 4; Pages: 2780-2796
We have studied the possibility of calibrating airborne laser scanning (ALS) intensity data, using land targets typically available in urban areas. For this purpose, a test area around Espoonlahti Harbor, Espoo, Finland, for which a long time series
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41884b4ca9a9995fa404c7b42dd45ee0
https://doi.org/10.3390/s90402780
https://doi.org/10.3390/s90402780
Autor:
Anttoni Jaakkola, Sanna Kaasalainen, Juha Hyyppä, Paula Litkey, Eero Ahokas, Juha Suomalainen, Antero Kukko, Mikko Kaasalainen, H. Lehner, Anu Akujärvi, Ulla Pyysalo, Hannu Hyyppä
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 47:588-598
We present a new approach for radiometric calibration of light detection and ranging (LIDAR) intensity data and demonstrate an application of this method to natural targets. The method is based on 1) using commercially available sand and gravel as re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6746310230c58e645674e5533a95949
https://doi.org/10.1109/tgrs.2008.2003351
https://doi.org/10.1109/tgrs.2008.2003351
Publikováno v:
Lecture Notes in Geoinformation and Cartography ISBN: 9783642191428
The paper presents the usability evaluation of a map-based multipublishing service for outdoor leisure activities. The multi-publishing service allows users to access the same spatial information contents through different channels, such as printed m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a31644459b18a5d005ac4edaf42fceb0
https://doi.org/10.1007/978-3-642-19143-5_14
https://doi.org/10.1007/978-3-642-19143-5_14
Publikováno v:
Scopus-Elsevier
This paper evaluates and discuses the accuracy of laser scanner in DTM (digital terrain model) generation in forested and suburban areas. Special emphasis is laid in order to optimize the selection of ground hits used for the creation of the DTM of f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a4c2df3df649f31a1baa65d8fda2f94
https://doi.org/10.1117/12.397784
https://doi.org/10.1117/12.397784
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