Works matching AU Näsi, Roope

Results: 25

Comparison of Deep Neural Networks in the Classification of Bark Beetle-Induced Spruce Damage Using UAS Images †.

Published in:

Remote Sensing, 2023, v. 15, n. 20, p. 4928, doi. 10.3390/rs15204928

By:

Turkulainen, Emma;
Honkavaara, Eija;
Näsi, Roope;
Oliveira, Raquel A.;
Hakala, Teemu;
Junttila, Samuli;
Karila, Kirsi;
Koivumäki, Niko;
Pelto-Arvo, Mikko;
Tuviala, Johanna;
Östersund, Madeleine;
Pölönen, Ilkka;
Lyytikäinen-Saarenmaa, Päivi

Publication type:

Article

A Novel Deep Multi-Image Object Detection Approach for Detecting Alien Barleys in Oat Fields Using RGB UAV Images.

Published in:

Remote Sensing, 2023, v. 15, n. 14, p. 3582, doi. 10.3390/rs15143582

By:

Khoramshahi, Ehsan;
Näsi, Roope;
Rua, Stefan;
Oliveira, Raquel A.;
Päivänsalo, Axel;
Niemeläinen, Oiva;
Niskanen, Markku;
Honkavaara, Eija

Publication type:

Article

Estimating Grass Sward Quality and Quantity Parameters Using Drone Remote Sensing with Deep Neural Networks.

Published in:

Remote Sensing, 2022, v. 14, n. 11, p. 2692, doi. 10.3390/rs14112692

By:

Karila, Kirsi;
Alves Oliveira, Raquel;
Ek, Johannes;
Kaivosoja, Jere;
Koivumäki, Niko;
Korhonen, Panu;
Niemeläinen, Oiva;
Nyholm, Laura;
Näsi, Roope;
Pölönen, Ilkka;
Honkavaara, Eija

Publication type:

Article

Multispectral Imagery Provides Benefits for Mapping Spruce Tree Decline Due to Bark Beetle Infestation When Acquired Late in the Season.

Published in:

Remote Sensing, 2022, v. 14, n. 4, p. 909, doi. 10.3390/rs14040909

By:

Junttila, Samuli;
Näsi, Roope;
Koivumäki, Niko;
Imangholiloo, Mohammad;
Saarinen, Ninni;
Raisio, Juha;
Holopainen, Markus;
Hyyppä, Hannu;
Hyyppä, Juha;
Lyytikäinen-Saarenmaa, Päivi;
Vastaranta, Mikko;
Honkavaara, Eija

Publication type:

Article

Reference Measurements in Developing UAV Systems for Detecting Pests, Weeds, and Diseases.

Published in:

Remote Sensing, 2021, v. 13, n. 7, p. 1238, doi. 10.3390/rs13071238

By:

Kaivosoja, Jere;
Hautsalo, Juho;
Heikkinen, Jaakko;
Hiltunen, Lea;
Ruuttunen, Pentti;
Näsi, Roope;
Niemeläinen, Oiva;
Lemsalu, Madis;
Honkavaara, Eija;
Salonen, Jukka;
Schirrmann, Michael;
Kefauver, Shawn C.

Publication type:

Article

A Clustering Framework for Monitoring Circadian Rhythm in Structural Dynamics in Plants From Terrestrial Laser Scanning Time Series.

Published in:

Frontiers in Plant Science, 2019, p. N.PAG, doi. 10.3389/fpls.2019.00486

By:

Puttonen, Eetu;
Lehtomäki, Matti;
Litkey, Paula;
Näsi, Roope;
Feng, Ziyi;
Liang, Xinlian;
Wittke, Samantha;
Pandžić, Miloš;
Hakala, Teemu;
Karjalainen, Mika;
Pfeifer, Norbert

Publication type:

Article

Sensitivity analysis of the Green Shoulder indices in pre-emergence detection of single trees attacked by European spruce bark beetle.

Published in:

International Journal of Remote Sensing, 2025, v. 46, n. 9, p. 3513, doi. 10.1080/01431161.2025.2482747

By:

Huo, Langning;
Koivumäki, Niko;
Näsi, Roope;
Honkavaara, Eija

Publication type:

Article

Towards scalable wide area UAS monitoring of forest disturbance using hydrogen powered airships.

Published in:

International Journal of Remote Sensing, 2025, v. 46, n. 1, p. 177, doi. 10.1080/01431161.2024.2399327

By:

Turkulainen, Emma;
Hietala, Janne;
Jormakka, Jiri;
Tuviala, Johanna;
de Oliveira, Raquel Alves;
Koivumäki, Niko;
Karila, Kirsi;
Näsi, Roope;
Suomalainen, Juha;
Pelto-Arvo, Mikko;
Lyytikäinen-Saarenmaa, Päivi;
Honkavaara, Eija

Publication type:

Article

Radiometric block adjustment of hyperspectral image blocks in the Brazilian environment.

Published in:

International Journal of Remote Sensing, 2018, v. 39, n. 15/16, p. 4910, doi. 10.1080/01431161.2018.1425570

By:

Miyoshi, Gabriela Takahashi;
Imai, Nilton Nobuhiro;
Tommaselli, Antonio Maria Garcia;
Honkavaara, Eija;
Näsi, Roope;
Moriya, Érika Akemi Saito

Publication type:

Article

High-precision estimation of grass quality and quantity using UAS-based VNIR and SWIR hyperspectral cameras and machine learning.

Published in:

Precision Agriculture, 2024, v. 25, n. 1, p. 186, doi. 10.1007/s11119-023-10064-2

By:

Oliveira, Raquel Alves;
Näsi, Roope;
Korhonen, Panu;
Mustonen, Arja;
Niemeläinen, Oiva;
Koivumäki, Niko;
Hakala, Teemu;
Suomalainen, Juha;
Kaivosoja, Jere;
Honkavaara, Eija

Publication type:

Article

Mapping of forest insect damage using hyperspectral aerial images.

Published in:

2016

By:

Näsi, Roope

Publication type:

Abstract

A Novel Machine Learning Method for Estimating Biomass of Grass Swards Using a Photogrammetric Canopy Height Model, Images and Vegetation Indices Captured by a Drone.

Published in:

Agriculture; Basel, 2018, v. 8, n. 5, p. 70, doi. 10.3390/agriculture8050070

By:

Viljanen, Niko;
Honkavaara, Eija;
Näsi, Roope;
Hakala, Teemu;
Niemeläinen, Oiva;
Kaivosoja, Jere

Publication type:

Article

Large-Area UAS-Based Forest Health Monitoring Utilizing a Hydrogen-Powered Airship and Multispectral Imaging.

Published in:

International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, 2024, v. 48, n. 3, p. 559, doi. 10.5194/isprs-archives-XLVIII-3-2024-559-2024

By:

Turkulainen, Emma;
Hietala, Janne;
Jormakka, Jiri;
Tuviala, Johanna;
de Oliveira, Raquel Alves;
Koivumäki, Niko;
Karila, Kirsi;
Näsi, Roope;
Suomalainen, Juha;
Pelto-Arvo, Mikko;
Lyytikäinen-Saarenmaa, Päivi;
Honkavaara, Eija

Publication type:

Article

VARIABILITY OF REMOTE SENSING SPECTRAL INDICES IN BOREAL LAKE BASINS.

Published in:

International Archives of the Photogrammetry, Remote Sensing & Spatial Information Sciences, 2018, v. 42, n. 2, p. 411, doi. 10.5194/isprs-archives-XLII-2-411-2018

By:

Hakala, Taina;
Pölönen, Ilkka;
Honkavaara, Eija;
Näsi, Roope;
Hakala, Teemu;
Lindfors, Antti

Publication type:

Article

Characterizing Seedling Stands Using Leaf-Off and Leaf-On Photogrammetric Point Clouds and Hyperspectral Imagery Acquired from Unmanned Aerial Vehicle.

Published in:

Forests (19994907), 2019, v. 10, n. 5, p. 415, doi. 10.3390/f10050415

By:

Imangholiloo, Mohammad;
Holopainen, Markus;
Saarinen, Ninni;
Vastaranta, Mikko;
Hyyppä, Juha;
Markelin, Lauri;
Rosnell, Tomi;
Näsi, Roope;
Hakala, Teemu;
Honkavaara, Eija

Publication type:

Article

Direct Reflectance Measurements from Drones: Sensor Absolute Radiometric Calibration and System Tests for Forest Reflectance Characterization.

Published in:

Sensors (14248220), 2018, v. 18, n. 5, p. 1417, doi. 10.3390/s18051417

By:

Hakala, Teemu;
Markelin, Lauri;
Honkavaara, Eija;
Scott, Barry;
Theocharous, Theo;
Nevalainen, Olli;
Näsi, Roope;
Suomalainen, Juha;
Viljanen, Niko;
Greenwell, Claire;
Fox, Nigel

Publication type:

Article

Can Basic Soil Quality Indicators and Topography Explain the Spatial Variability in Agricultural Fields Observed from Drone Orthomosaics?

Published in:

Agronomy, 2023, v. 13, n. 3, p. 669, doi. 10.3390/agronomy13030669

By:

Näsi, Roope;
Mikkola, Hannu;
Honkavaara, Eija;
Koivumäki, Niko;
Oliveira, Raquel A.;
Peltonen-Sainio, Pirjo;
Keijälä, Niila-Sakari;
Änäkkälä, Mikael;
Arkkola, Lauri;
Alakukku, Laura

Publication type:

Article

Silage Grass Sward Nitrogen Concentration and Dry Matter Yield Estimation Using Deep Regression and RGB Images Captured by UAV.

Published in:

Agronomy, 2022, v. 12, n. 6, p. 1352, doi. 10.3390/agronomy12061352

By:

Alves Oliveira, Raquel;
Marcato Junior, José;
Soares Costa, Celso;
Näsi, Roope;
Koivumäki, Niko;
Niemeläinen, Oiva;
Kaivosoja, Jere;
Nyholm, Laura;
Pistori, Hemerson;
Honkavaara, Eija

Publication type:

Article

A Novel Tilt Correction Technique for Irradiance Sensors and Spectrometers On-Board Unmanned Aerial Vehicles.

Published in:

Remote Sensing, 2018, v. 10, n. 12, p. 2068, doi. 10.3390/rs10122068

By:

Suomalainen, Juha;
Hakala, Teemu;
Alves de Oliveira, Raquel;
Markelin, Lauri;
Viljanen, Niko;
Näsi, Roope;
Honkavaara, Eija

Publication type:

Article

Estimating Biomass and Nitrogen Amount of Barley and Grass Using UAV and Aircraft Based Spectral and Photogrammetric 3D Features.

Published in:

Remote Sensing, 2018, v. 10, n. 7, p. 1082, doi. 10.3390/rs10071082

By:

Näsi, Roope;
Viljanen, Niko;
Kaivosoja, Jere;
Alhonoja, Katja;
Hakala, Teemu;
Markelin, Lauri;
Honkavaara, Eija

Publication type:

Article

Assessment of Classifiers and Remote Sensing Features of Hyperspectral Imagery and Stereo-Photogrammetric Point Clouds for Recognition of Tree Species in a Forest Area of High Species Diversity.

Published in:

Remote Sensing, 2018, v. 10, n. 5, p. 714, doi. 10.3390/rs10050714

By:

Tuominen, Sakari;
Näsi, Roope;
Honkavaara, Eija;
Balazs, Andras;
Hakala, Teemu;
Viljanen, Niko;
Pölönen, Ilkka;
Saari, Heikki;
Ojanen, Harri

Publication type:

Article

Assessing Biodiversity in Boreal Forests with UAV-Based Photogrammetric Point Clouds and Hyperspectral Imaging.

Published in:

Remote Sensing, 2018, v. 10, n. 2, p. 338, doi. 10.3390/rs10020338

By:

Saarinen, Ninni;
Vastaranta, Mikko;
Näsi, Roope;
Rosnell, Tomi;
Hakala, Teemu;
Honkavaara, Eija;
Wulder, Michael A.;
Luoma, Ville;
Tommaselli, Antonio M. G.;
Imai, Nilton N.;
Ribeiro, Eduardo A. W.;
Guimarães, Raul B.;
Holopainen, Markus;
Hyyppä, Juha

Publication type:

Article

Using UAV-Based Photogrammetry and Hyperspectral Imaging for Mapping Bark Beetle Damage at Tree-Level.

Published in:

Remote Sensing, 2015, v. 7, n. 11, p. 15467, doi. 10.3390/rs71115467

By:

Näsi, Roope;
Honkavaara, Eija;
Lyytikäinen-Saarenmaa, Päivi;
Blomqvist, Minna;
Litkey, Paul;
Hakala, Teemu;
Viljanen, Niko;
Kantola, Tuula;
Tanhuanpää, Topi;
Holopainen, Markus

Publication type:

Article

Infestation symptoms as indicators of a sustained bark beetle outbreak in conserved and managed Norway spruce forests in south-eastern Finland.

Published in:

European Journal of Forest Research, 2025, v. 144, n. 3, p. 377, doi. 10.1007/s10342-025-01763-8

By:

Simon, Diana-Cristina;
Lyytikäinen-Saarenmaa, Päivi;
Pelto-Arvo, Mikko;
Tuviala, Johanna;
Kosunen, Maiju;
Honkavaara, Eija;
Näsi, Roope;
Tikkanen, Olli-Pekka;
Kilpeläinen, Antti;
Peltola, Heli

Publication type:

Article

Exploring forest changes in an Ips typographus L. outbreak area: insights from multi-temporal multispectral UAS remote sensing.

Published in:

European Journal of Forest Research, 2024, v. 143, n. 6, p. 1871, doi. 10.1007/s10342-024-01734-5

By:

Östersund, Madeleine;
Honkavaara, Eija;
Oliveira, Raquel A.;
Näsi, Roope;
Hakala, Teemu;
Koivumäki, Niko;
Pelto-Arvo, Mikko;
Tuviala, Johanna;
Nevalainen, Olli;
Lyytikäinen-Saarenmaa, Päivi

Publication type:

Article