Browsing by Subject "terrestrial laser scanning"

Now showing items 1-7 of 7

    • Assessing the Effects of Sample Size on Parametrizing a Taper Curve Equation and the Resultant Stem-Volume Estimates 

      Saarinen, Ninni; Kankare, Ville; Pyörälä, Jiri; Yrttimaa, Tuomas; Liang, Xinlian; Wulder, Michael A; Holopainen, Markus; Hyyppä, Juha; Vastaranta, Mikko (MDPI AG, 2019)
      Large and comprehensive datasets, traditionally based on destructive stem analysis or other labor-intensive approaches, are commonly considered as a necessity in developing stem-volume equations. The aim here was to ...
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    • Can Leaf Water Content Be Estimated Using Multispectral Terrestrial Laser Scanning? A Case Study With Norway Spruce Seedlings 

      Junttila, Samuli; Sugano, Junko; Vastaranta, Mikko; Linnakoski, Riikka; Kaartinen, Harri; Kukko, Antero; Holopainen, Markus; Hyyppä, Hannu; Hyyppä, Juha (Frontiers Media SA, 2018)
      Changing climate is increasing the amount and intensity of forest stress agents, such as drought, pest insects, and pathogens. Leaf water content, measured here in terms of equivalent water thickness (EWT), is an early ...
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    • Data for investigating structural complexity of individual Scots pine trees 

      Saarinen, Ninni,University of Helsinki, University of Eastern Finland; Calders, Kim,Ghent University; Kankare, Ville,University of Eastern Finland, University of Helsinki; Yrttimaa, Tuomas,University of Eastern Finland, University of Helsinki; Junttila, Samuli,University of Eastern Finland, University of Helsinki; Luoma, Ville,University of Helsinki; Huuskonen, Saija,Natural Resources Institute Finland; Hynynen, Jari,Natural Resources Institute Finland; Verbeeck, Hans,Ghent University (2021)
      Tree functional traits together with processes such as forest regeneration, growth, and mortality affect forest and tree structure. Forest management inherently impacts these processes. Moreover, forest structure, biodiversity, ...

    • Detailed point cloud data on stem size and shape of Scots pine trees 

      Saarinen, Ninni,University of Helsinki, University of Eastern Finland; Kankare, Ville,University of Eastern Finland, University of Helsinki; Yrttimaa, Tuomas,University of Eastern Finland; Viljanen, Niko,Finnish Geospatial Research Institute, Aalto University; Honkavaara, Eija,Finnish Geospatial Research Institute; Holopainen, Markus,University of Helsinki; Hyyppä, Juha,Finnish Geospatial Research Institute; Huuskonen, Saija,Natural Resources Institute Finland; Hynynen, Jari,Natural Resources Institute Finland; Vastaranta, Mikko,University of Eastern Finland (2020)
      This data set is comprised of three packed zip files and they include text files of 3D information from terrestrial laser scanning (TLS) and aerial imagery from unmanned aerial vehicle (UAV) from individual Scots pine trees ...

    • Exploring tree growth allometry using two-date terrestrial laser scanning 

      Yrttimaa, T.; Luoma, V.; Saarinen, N.; Kankare, V.; Junttila, S.; Holopainen, M.; Hyyppä, J.; Vastaranta, M. (Elsevier B.V., 2022)
      Tree growth is a physio-ecological phenomena of high interest among researchers across disciplines. Observing changes in tree characteristics has conventionally required either repeated measurements of the characteristics ...

    • International benchmarking of terrestrial laser scanning approaches for forest inventories 

      Liang, Xinlian; Hyyppä, Juha; Kaartinen, Harri; Lehtomäki, Matti; Pyörälä, Jiri; Pfeifer, Norbert; Holopainen, Markus; Brolly, Gábor; Francesco, Pirotti; Hackenberg, Jan; Huang, Huabing; Jo, Hyun-Woo; Katoh, Masato; Liu, Luxia; Mokros, Martin; Morel, Jules; Olofsson, Kenneth; Poveda-Lopez, Jose; Trochta, Jan; Di, Wang et al. (Elsevier BV, 2018)
      The last two decades have witnessed increasing awareness of the potential of terrestrial laser scanning (TLS) in forest applications in both public and commercial sectors, along with tremendous research efforts and progress. ...
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    • Multisensorial Close-Range Sensing Generates Benefits for Characterization of Managed Scots Pine (Pinus sylvestris L.) Stands 

      Yrttimaa, Tuomas; Saarinen, Ninni; Kankare, Ville; Viljanen, Niko; Hynynen, Jari; Huuskonen, Saija; Holopainen, Markus; Hyyppä, Juha; Honkavaara, Eija; Vastaranta, Mikko (MDPI AG, 2020)
      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 ...
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