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Juho-Pekka Virtanen, Kaisa Jaalama, Tuulia Puustinen, Arttu Julin, Juha Hyyppä and Hannu Hyyppä
3D city models and their browser-based applications have become an increasingly applied tool in the cities. One of their applications is the analysis views and visibility, applicable to property valuation and evaluation of urban green infrastructure. We ...
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Tuomas Yrttimaa, Ninni Saarinen, Ville Kankare, Niko Viljanen, Jari Hynynen, Saija Huuskonen, Markus Holopainen, Juha Hyyppä, Eija Honkavaara and Mikko Vastaranta
Terrestrial laser scanning (TLS) provides a detailed three-dimensional representation of surrounding forest structures. However, due to close-range hemispherical scanning geometry, the ability of TLS technique to comprehensively characterize all trees, a...
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Arttu Julin, Kaisa Jaalama, Juho-Pekka Virtanen, Mikko Maksimainen, Matti Kurkela, Juha Hyyppä and Hannu Hyyppä
The Internet has become a major dissemination and sharing platform for 3D content. The utilization of 3D measurement methods can drastically increase the production efficiency of 3D content in an increasing number of use cases where 3D documentation of r...
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Arttu Julin, Kaisa Jaalama, Juho-Pekka Virtanen, Matti Pouke, Johanna Ylipulli, Matti Vaaja, Juha Hyyppä and Hannu Hyyppä
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Juho-Pekka Virtanen, Antero Kukko, Harri Kaartinen, Anttoni Jaakkola, Tuomas Turppa, Hannu Hyyppä and Juha Hyyppä
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Ville Luoma, Ninni Saarinen, Michael A. Wulder, Joanne C. White, Mikko Vastaranta, Markus Holopainen and Juha Hyyppä
Forest resource information has a hierarchical structure: individual tree attributes are summed at the plot level and then in turn, plot-level estimates are used to derive stand or large-area estimates of forest resources. Due to this hierarchy, it is im...
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Topi Tanhuanpää, Ninni Saarinen, Ville Kankare, Kimmo Nurminen, Mikko Vastaranta, Eija Honkavaara, Mika Karjalainen, Xiaowei Yu, Markus Holopainen and Juha Hyyppä
Height models based on high-altitude aerial images provide a low-cost means of generating detailed 3D models of the forest canopy. In this study, the performance of these height models in the detection of individual trees was evaluated in a commercially ...
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Juho-Pekka Virtanen, Hannu Hyyppä, Ali Kämäräinen, Tommi Hollström, Mikko Vastaranta and Juha Hyyppä
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Johanna Jalonen, Juha Järvelä, Juho-Pekka Virtanen, Matti Vaaja, Matti Kurkela and Hannu Hyyppä
Detailed modeling of floodplain flows and associated processes requires data on mixed, heterogeneous vegetation at river reach scale, though the collection of vegetation data is typically limited in resolution or lack spatial information. This study inve...
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Jenni-Mari Vesakoski, Petteri Alho, Juha Hyyppä, Markus Holopainen, Claude Flener and Hannu Hyyppä
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