Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Timo Toivanen"'
Autor:
Matthieu Molinier, Carlos A. López-Sánchez, Timo Toivanen, Ilkka Korpela, José J. Corral-Rivas, Renne Tergujeff, Tuomas Häme
Publikováno v:
Remote Sensing, Vol 8, Iss 10, p 869 (2016)
Due to the high cost of traditional forest plot measurements, the availability of up-to-date in situ forest inventory data has been a bottleneck for remote sensing image analysis in support of the important global forest biomass mapping. Capitalizing
Externí odkaz:
https://doaj.org/article/450290d8f85a404f9b5380d77c124ce2
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-7/W3, Pp 1221-1226 (2015)
Kotovirta, V, Toivanen, T, Tergujeff, R, Häme, T & Molinier, M 2015, Citizen science for earth observation : applications in environmental monitoring and disaster response . in G Schreier, P E Skrovseth & H Staudenrausch (eds), 36th International Symposium on Remote Sensing of Environment (ISRSE 2015) . Copernicus Publications, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol. XL-7/W3, pp. 1221-1226, 36th International Symposium on Remote Sensing of Environment, ISRSE-36, Berlin, Germany, 11/05/15 . https://doi.org/10.5194/isprsarchives-XL-7-W3-1221-2015
Kotovirta, V, Toivanen, T, Tergujeff, R, Häme, T & Molinier, M 2015, Citizen science for earth observation : applications in environmental monitoring and disaster response . in G Schreier, P E Skrovseth & H Staudenrausch (eds), 36th International Symposium on Remote Sensing of Environment (ISRSE 2015) . Copernicus Publications, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol. XL-7/W3, pp. 1221-1226, 36th International Symposium on Remote Sensing of Environment, ISRSE-36, Berlin, Germany, 11/05/15 . https://doi.org/10.5194/isprsarchives-XL-7-W3-1221-2015
Citizen science is a promising way to increase temporal and spatial coverages of in-situ data, and to aid in data processing and analysis. In this paper, we present how citizen science can be used together with Earth observation, and demonstrate its
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5fe09c94d56a29e2d0a39827eb77172
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W3/1221/2015/isprsarchives-XL-7-W3-1221-2015.pdf
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-7-W3/1221/2015/isprsarchives-XL-7-W3-1221-2015.pdf
Publikováno v:
Näykki, T, Koponen, S, Väisänen, T, Pyhälahti, T, Toivanen, T & Leito, I 2014, ' Validation of a new measuring system for water turbidity field measurements ', Accreditation and Quality Assurance, vol. 19, no. 3, pp. 175-183 . https://doi.org/10.1007/s00769-014-1052-9
Turbidity is an essential parameter for describing water quality by direct and indirect impacts on fish, invertebrates and aquatic plants. Currently, environmental monitoring measurements are carried out with appropriate quality by accredited testing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0fceaec81a3a1fd8c3ff7a6c00e5b29
https://doi.org/10.1007/s00769-014-1052-9
https://doi.org/10.1007/s00769-014-1052-9
Autor:
Häme, Matthieu Molinier, Carlos López-Sánchez, Timo Toivanen, Ilkka Korpela, José Corral-Rivas, Renne Tergujeff, Tuomas
Publikováno v:
Remote Sensing; Volume 8; Issue 10; Pages: 869
Due to the high cost of traditional forest plot measurements, the availability of up-to-date in situ forest inventory data has been a bottleneck for remote sensing image analysis in support of the important global forest biomass mapping. Capitalizing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::7d752da621766f075274b66cce951bd1
Autor:
Timo Toivanen, Kari Kallio, Matti Lindholm, Matthieu Molinier, Timo Pyhälahti, Sampsa Koponen, Chengyuan Peng, Ville Kotovirta, Saku Anttila, Marnix Laanen, Marko Järvinen
Publikováno v:
Pyhälahti, T, Toivanen, T, Kallio, K, Järvinen, M, Molinier, M, Koponen, S, Kotovirta, V, Peng, C Y, Anttila, S, Laanen, M & Lindholm, M 2015, Advances in combining optical citizen observations on water quality with satellite observations as part of an environmental monitoring system . in 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) . IEEE Institute of Electrical and Electronic Engineers, pp. 5395-5398, IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015, Milano, Italy, 26/07/15 . https://doi.org/10.1109/IGARSS.2015.7327055
IGARSS
IGARSS
Citizen observations, environmental data gathered by volunteers without professional observation capabilities, have been extensively used for Finnish water quality monitoring tasks. Recently, mobile smartphones and their digital cameras have enabled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6abec7ced2a26bf436afcec633eb8c2
https://cris.vtt.fi/en/publications/b2d3b558-dd44-48a9-9376-b11c5fcb30f8
https://cris.vtt.fi/en/publications/b2d3b558-dd44-48a9-9376-b11c5fcb30f8
Publikováno v:
Toivanen, T, Tergujeff, R, Andersson, K, Molinier, M & Häme, T 2015, Analyzing Forest Inventory Data from Geo-Located Photographs . in Geophysical Research Abstracts . vol. 17, EGU2015-11377-1, European Geosciences Union General Assembly 2015, Vienna, Australia, 12/04/15 . < https://meetingorganizer.copernicus.org/EGU2015/EGU2015-11377-1.pdf >
VTT Technical Research Centre of Finland-PURE
VTT Technical Research Centre of Finland-PURE
In this paper we present a tool for estimating forest inventory data from geo-located photographs. The tool can be used to estimate in-situ forest inventory data including estimated biomass, tree species, tree height and diameter. The collected in-si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::124b6340f05f741b6f7d28aec5429310
https://cris.vtt.fi/en/publications/e3adc2e9-e1ce-4945-b835-fc583ae33bb5
https://cris.vtt.fi/en/publications/e3adc2e9-e1ce-4945-b835-fc583ae33bb5
Autor:
Carlos A. López-Sánchez, Tuomas Home, Daniel Vega, Matthieu Molinier, Javier Rodríguez Corral, Timo Toivanen
Publikováno v:
Molinier, M, Toivanen, T, Häme, T, López-Sánchez, C, Corral, J & Vega, D 2015, Participative forest in-situ measurements for biomass mapping in satellite images over Durango State, Mexico . in Geoscience and Remote Sensing Symposium (IGARSS), 2015 IEEE International . IEEE Institute of Electrical and Electronic Engineers, pp. 5391-5394, IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015, Milano, Italy, 26/07/15 . https://doi.org/10.1109/IGARSS.2015.7327054
IGARSS
IGARSS
Citizen Science, propelled by the growing popularity of smartphones, can provide valuable reference information for remote sensing image analysis. We demonstrate that the Relasphone, a biomass measuring application previously developed and tested in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0cf6c066d988094c4211ba50f109403
http://juuli.fi/Record/0006528615
http://juuli.fi/Record/0006528615
Publikováno v:
IGARSS
The availability of ground reference forest data can be a bottleneck in remote sensing studies. Data may be available in only limited areas because of the cost and lengthy process of traditional forest inventory data collection by professionals. In c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb03dccbb7e097fb318037f2354ed282
https://doi.org/10.1109/igarss.2014.6946554
https://doi.org/10.1109/igarss.2014.6946554
Publikováno v:
Toivanen, T, Koponen, S, Kotovirta, V, Molinier, M & Peng, C 2013, ' Water quality analysis using an inexpensive device and a mobile phone ', Environmental Systems Research, vol. 2, no. 9, 9 . https://doi.org/10.1186/2193-2697-2-9
BackgroundWater transparency is one indicator of water quality. High water transparency is an indication of clean water. A common method for measuring water transparency is Secchi depth. In this paper, we present an approach to water quality (Secchi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dbcb92539d5eb4a17140ba68b589039
https://cris.vtt.fi/en/publications/97f9fdd8-ce34-4382-b0a0-5712faae9387
https://cris.vtt.fi/en/publications/97f9fdd8-ce34-4382-b0a0-5712faae9387
Publikováno v:
Communications in Computer and Information Science ISBN: 9783642541049
IC3K
Timonen, M, Toivanen, T, Kasari, M, Teng, Y, Cheng, C & He, L 2013, Keyword Extraction from Short Documents Using Three Levels of Word Evaluation . in A Fred, J L G Dietz, K Liu & J Filipe (eds), Knowledge Discovery, Knowledge Engineering and Knowledge Management : 4th International Joint Conference, IC3K 2012 . Springer, Communications in Computer and Information Science, vol. 415, pp. 130-146, 4th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management, IC3K 2012, Barcelona, Spain, 4/10/12 . https://doi.org/10.1007/978-3-642-54105-6_9
IC3K
Timonen, M, Toivanen, T, Kasari, M, Teng, Y, Cheng, C & He, L 2013, Keyword Extraction from Short Documents Using Three Levels of Word Evaluation . in A Fred, J L G Dietz, K Liu & J Filipe (eds), Knowledge Discovery, Knowledge Engineering and Knowledge Management : 4th International Joint Conference, IC3K 2012 . Springer, Communications in Computer and Information Science, vol. 415, pp. 130-146, 4th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management, IC3K 2012, Barcelona, Spain, 4/10/12 . https://doi.org/10.1007/978-3-642-54105-6_9
In this paper we propose a novel approach for keyword extraction from short documents where each document is assessed on three levels: corpus level, cluster level and document level. We focus our efforts on documents that contain less than 100 words.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::944eb3f4ed071ebc0abab9f11352b923
https://doi.org/10.1007/978-3-642-54105-6_9
https://doi.org/10.1007/978-3-642-54105-6_9