Zobrazeno 1 - 10
of 157
pro vyhledávání: '"H. Hyyppä"'
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLIV-4-W1-2020, Pp 159-165 (2020)
Visualization applications are an increasingly significant component in the field of 3D geo-information. In them, the utilization of consumer grade virtual reality (VR) head mounted displays (HMD) has become a topical research question. It is notable
Externí odkaz:
https://doaj.org/article/1b4c4cdb97c14c248f1b53849bd43ef1
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol V-1-2020, Pp 199-205 (2020)
The integration of the 3D measurement techniques with luminance imaging has increased the potential for mapping night-time road lighting conditions. In this study, we present selected static and mobile approaches for the purpose. The measurement meth
Externí odkaz:
https://doaj.org/article/98c8806b0371477e8848b82baed05ffd
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLIII-B1-2020, Pp 165-172 (2020)
In this paper, we present a workflow how to design and implement a low-cost survey drone that meets the quality requirements of a much higher cost drone system. The technical specifications of available components and our design boundaries were appli
Externí odkaz:
https://doaj.org/article/93b45555e61e4a9a9d33d184a68a3be9
Publikováno v:
Earth Surface Dynamics, Vol 6, Pp 163-185 (2018)
In ephemeral rivers, channel morphology represents a snapshot at the end of a succession of geomorphic changes caused by floods. In most cases, the channel shape and bedform migration during different phases of a flood hydrograph cannot be identif
Externí odkaz:
https://doaj.org/article/58e6920149a842c08763adc2af6872ce
Autor:
S. Junttila, M. Vastaranta, R. Linnakoski, J. Sugano, H. Kaartinen, A. Kukko, M. Holopainen, H. Hyyppä, J. Hyyppä
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-3-W3, Pp 81-85 (2017)
Climate change is increasing the amount and intensity of disturbance events, i.e. drought, pest insect outbreaks and fungal pathogens, in forests worldwide. Leaf water content (LWC) is an early indicator of tree stress that can be measured remotely u
Externí odkaz:
https://doaj.org/article/222117e46e394519bae2e0705107e24b
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol III-8, Pp 117-122 (2016)
The 3D measurement technique of terrestrial laser scanning (TLS) in forest inventories has shown great potential for improving the accuracy and efficiency of both individual tree and plot level data collection. However, the effect of wind has been po
Externí odkaz:
https://doaj.org/article/e7510173aea74d5d9dc83f7730fa6b33
Autor:
M. Vaaja, M. Kurkela, H. Hyyppä, P. Alho, J. Hyyppä, A. Kukko, H. Kaartinen, E. Kasvi, S. Kaasalainen, P. Rönnholm
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXVIII-5/W12, Pp 319-324 (2012)
In recent years, laser scanning measurements have been widely used to detect topographic and urban features. In this article, we present a method to integrate mobile laser scanning (MLS) data and panoramic images for producing a textured surface mode
Externí odkaz:
https://doaj.org/article/e27d12e794e342b0a84c9d2520e3fc90
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXVIII-5/W12, Pp 157-161 (2012)
In this study we searched the obtainable accuracy of forest inventory based on the individual tree detection (ITD) by using fusion of automatic ITD (ITDauto) and visual interpretation of laser point clouds. Current ITD algorithms, mostly based on seg
Externí odkaz:
https://doaj.org/article/e0b4f85c4fec40eda727c3590a5eeaa3
Autor:
M. Holopainen, M. Vastaranta, V. Kankare, M. Räty, M. Vaaja, X. Liang, X. Yu, J. Hyyppä, H. Hyyppä, R. Viitala, S. Kaasalainen
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXVIII-5/W12, Pp 91-95 (2012)
The objective of this study was to make preliminary investigations between accurately measured field biomasses and terrestrial laser scanning (TLS) measurements including tree crown and stem diameters. Stem and crown biomass were determined based on
Externí odkaz:
https://doaj.org/article/572e4710548c4d2abfcfce237d259ffd
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