Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Anssi Krooks"'
Publikováno v:
Remote Sensing, Vol 7, Iss 6, Pp 6710-6740 (2015)
Open geospatial data sources provide opportunities for low cost 3D scene reconstruction. In this study, based on a sparse airborne laser scanning (ALS) point cloud (0.8 points/m2) obtained from open source databases, a building reconstruction pipelin
Externí odkaz:
https://doaj.org/article/c4753879708649c088d0c49e8b703fef
Publikováno v:
Remote Sensing, Vol 6, Iss 5, Pp 4090-4108 (2014)
The objective of this study was to obtain up-to-date information on land use and to identify long term changes in land use, especially rice, aquaculture and other crops in Ben Tre and Tra Vinh provinces in Vietnam’s Mekong Delta. Long-term changes
Externí odkaz:
https://doaj.org/article/700511b183b34719b0e041b42c7638a6
Autor:
Sanna Kaasalainen, Anssi Krooks, Jari Liski, Pasi Raumonen, Harri Kaartinen, Mikko Kaasalainen, Eetu Puttonen, Kati Anttila, Raisa Mäkipää
Publikováno v:
Remote Sensing, Vol 6, Iss 5, Pp 3906-3922 (2014)
We present a new application of terrestrial laser scanning and mathematical modelling for the quantitative change detection of tree biomass, volume, and structure. We investigate the feasibility of the approach with two case studies on trees, assess
Externí odkaz:
https://doaj.org/article/6fe903aee729428d819bcd3af1492a50
Autor:
Claude Flener, Matti Vaaja, Anttoni Jaakkola, Anssi Krooks, Harri Kaartinen, Antero Kukko, Elina Kasvi, Hannu Hyyppä, Juha Hyyppä, Petteri Alho
Publikováno v:
Remote Sensing, Vol 5, Iss 12, Pp 6382-6407 (2013)
Accurate terrain models are a crucial component of studies of river channel evolution. In this paper we describe a new methodology for creating high-resolution seamless digital terrain models (DTM) of river channels and their floodplains. We combine
Externí odkaz:
https://doaj.org/article/6d585e6950df46968daca5e2d2421041
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:
Remote Sensing, Vol 3, Iss 10, Pp 2207-2221 (2011)
The intensity information from terrestrial laser scanners (TLS) has become an important object of study in recent years, and there are an increasing number of applications that would benefit from the addition of calibrated intensity data to the topog
Externí odkaz:
https://doaj.org/article/91e74b597d524bc3a043af0c95a1ea1d
Publikováno v:
Remote Sensing, Vol 1, Iss 3, Pp 144-158 (2009)
The intensity data produced by terrestrial laser scanners has become a topic of increasing interest in the remote sensing community. We present a case study of radiometric calibration for two phase-shift continuous wave (CW) terrestrial scanners and
Externí odkaz:
https://doaj.org/article/8b0ec10722ac4766b928dae71bf6fd82
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:
Anttoni Jaakkola, Anssi Krooks, Sanna Kaasalainen, Teemu Hakala, Harri Kaartinen, Olli Nevalainen, Kati Anttila, Antero Kukko
Publikováno v:
Cold Regions Science and Technology. 121:52-59
Terrestrial laser scanning data have become more and more commonly used in cryospheric studies as the commercial instruments are getting cheaper and more user-friendly. We have studied the usability of laser scanning intensity data in remote sensing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa64a6bec73fb7a5b22480df8160c86b
https://doi.org/10.1016/j.coldregions.2015.10.005
https://doi.org/10.1016/j.coldregions.2015.10.005
Autor:
Rasmus Astrup, Sanna Kaasalainen, Anssi Krooks, Pasi Raumonen, Mikko Kaasalainen, Aaron Smith, Markku Åkerblom, Jari Liski
Publikováno v:
Forests
Volume 5
Issue 12
Pages 3274-3294
Forests, Vol 5, Iss 12, Pp 3274-3294 (2014)
Volume 5
Issue 12
Pages 3274-3294
Forests, Vol 5, Iss 12, Pp 3274-3294 (2014)
The accurate characterization of three-dimensional (3D) root architecture, volume, and biomass is important for a wide variety of applications in forest ecology and to better understand tree and soil stability. Technological advancements have led to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bd83624e974ee323bef9c1c8dc230f4
https://doi.org/10.3390/f5123274
https://doi.org/10.3390/f5123274