Niko Viljanen

13 papers C 1Journal 9Unranked 3
YearRankTypeTitle / Venue / Authors
2020 J jnl
Multisensorial Close-Range Sensing Generates Benefits for Characterization of Managed Scots Pine (Pinus sylvestris L.) Stands.
ISPRS Int. J. Geo Inf.
Tuomas Yrttimaa, Ninni Saarinen, Ville Kankare, Niko Viljanen, Jari Hynynen, Saija Huuskonen, Markus Holopainen, Juha Hyyppä, Eija Honkavaara, Mikko Vastaranta
2020 C conf
On the Estimation of the Leaf Angle Distribution from Drone Based Photogrammetry.
IGARSS
Shan Xu, Martha Arbayani Zaidan, Eija Honkavaara, Teemu Hakala, Niko Viljanen, Albert Porcar-Castell, Zhigang Liu, Jon Atherton
2019 J jnl
Accurate Calibration Scheme for a Multi-Camera Mobile Mapping System.
Remote. Sens.
Ehsan Khoramshahi, Mariana Batista Campos, Antonio Maria Garcia Tommaselli, Niko Viljanen, Teemu Mielonen, Harri Kaartinen, Antero Kukko, Eija Honkavaara
2018 J jnl
A Novel Tilt Correction Technique for Irradiance Sensors and Spectrometers On-Board Unmanned Aerial Vehicles.
Remote. Sens.
Juha Suomalainen, Teemu Hakala, Raquel Alves de Oliveira, Lauri Markelin, Niko Viljanen, Roope Näsi, Eija Honkavaara
2018 J jnl
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.
Remote. Sens.
Sakari Tuominen, Roope Näsi, Eija Honkavaara, Andras Balazs, Teemu Hakala, Niko Viljanen, Ilkka Pölönen, Heikki Saari, Harri Ojanen
2018 J jnl
Direct Reflectance Measurements from Drones: Sensor Absolute Radiometric Calibration and System Tests for Forest Reflectance Characterization.
Sensors
Teemu Hakala, Lauri Markelin, Eija Honkavaara, Barry Scott, Theo Theocharous, Olli Nevalainen, Roope Näsi, Juha Suomalainen, Niko Viljanen, Claire Greenwell, Nigel Fox
2018 J jnl
Estimating Biomass and Nitrogen Amount of Barley and Grass Using UAV and Aircraft Based Spectral and Photogrammetric 3D Features.
Remote. Sens.
Roope Näsi, Niko Viljanen, Jere Kaivosoja, Katja Alhonoja, Teemu Hakala, Lauri Markelin, Eija Honkavaara
2018 — conf
Tree Species Identification Using 3D Spectral Data and 3D Convolutional Neural Network.
WHISPERS
Ilkka Pölönen, Leevi Annala, Samuli Rahkonen, Olli Nevalainen, Eija Honkavaara, Sakari Tuominen, Niko Viljanen, Teemu Hakala
2017 — conf
Applying Different Remote Sensing Data to Determine Relative Biomass Estimations of Cereals for Precision Fertilization Task Generation.
HAICTA
Jere Kaivosoja, Roope Näsi, Teemu Hakala, Niko Viljanen, Eija Honkavaara
2017 — conf
Different Remote Sensing Data in Relative Biomass Determination and in Precision Fertilization Task Generation for Cereal Crops.
HAICTA (Revised Selected Papers)
Jere Kaivosoja, Roope Näsi, Teemu Hakala, Niko Viljanen, Eija Honkavaara
2017 J jnl
Individual Tree Detection and Classification with UAV-Based Photogrammetric Point Clouds and Hyperspectral Imaging.
Remote. Sens.
Olli Nevalainen, Eija Honkavaara, Sakari Tuominen, Niko Viljanen, Teemu Hakala, Xiaowei Yu, Juha Hyyppä, Heikki Saari, Ilkka Pölönen, Nilton Nobuhiro Imai, Antonio M. G. Tommaselli
2016 J jnl
Remote Sensing of 3-D Geometry and Surface Moisture of a Peat Production Area Using Hyperspectral Frame Cameras in Visible to Short-Wave Infrared Spectral Ranges Onboard a Small Unmanned Airborne Vehicle (UAV).
IEEE Trans. Geosci. Remote. Sens.
Eija Honkavaara, Matti A. Eskelinen, Ilkka Pölönen, Heikki Saari, Harri Ojanen, Rami Mannila, Christer Holmlund, Teemu Hakala, Paula Litkey, Tomi Rosnell, Niko Viljanen, Merja Pulkkanen
2015 J jnl
Using UAV-Based Photogrammetry and Hyperspectral Imaging for Mapping Bark Beetle Damage at Tree-Level.
Remote. Sens.
Roope Näsi, Eija Honkavaara, Päivi Lyytikäinen-Saarenmaa, Minna Blomqvist, Paula Litkey, Teemu Hakala, Niko Viljanen, Tuula Kantola, Topi Tanhuanpää, Markus Holopainen