Teemu Hakala
Teemu Hakala
Research Scientist, Finnish Geospatial Research Institute
Verified email at
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Processing and assessment of spectrometric, stereoscopic imagery collected using a lightweight UAV spectral camera for precision agriculture
E Honkavaara, H Saari, J Kaivosoja, I Pölönen, T Hakala, P Litkey, ...
Remote Sensing 5 (10), 5006-5039, 2013
Individual tree detection and classification with UAV-based photogrammetric point clouds and hyperspectral imaging
O Nevalainen, E Honkavaara, S Tuominen, N Viljanen, T Hakala, X Yu, ...
Remote sensing 9 (3), 185, 2017
Using UAV-based photogrammetry and hyperspectral imaging for mapping bark beetle damage at tree-level
R Näsi, E Honkavaara, P Lyytikäinen-Saarenmaa, M Blomqvist, P Litkey, ...
Remote Sensing 7 (11), 15467-15493, 2015
Full waveform hyperspectral LiDAR for terrestrial laser scanning
T Hakala, J Suomalainen, S Kaasalainen, Y Chen
Optics express 20 (7), 7119-7127, 2012
Remote sensing of bark beetle damage in urban forests at individual tree level using a novel hyperspectral camera from UAV and aircraft
R Näsi, E Honkavaara, M Blomqvist, P Lyytikäinen-Saarenmaa, T Hakala, ...
Urban Forestry & Urban Greening 30, 72-83, 2018
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
N Viljanen, E Honkavaara, R Näsi, T Hakala, O Niemeläinen, J Kaivosoja
Agriculture 8 (5), 70, 2018
Estimating biomass and nitrogen amount of barley and grass using UAV and aircraft based spectral and photogrammetric 3D features
R Näsi, N Viljanen, J Kaivosoja, K Alhonoja, T Hakala, L Markelin, ...
Remote Sensing 10 (7), 1082, 2018
Two-channel hyperspectral LiDAR with a supercontinuum laser source
Y Chen, E Räikkönen, S Kaasalainen, J Suomalainen, T Hakala, ...
Sensors 10 (7), 7057-7066, 2010
Under-canopy UAV laser scanning for accurate forest field measurements
E Hyyppä, J Hyyppä, T Hakala, A Kukko, MA Wulder, JC White, J Pyörälä, ...
ISPRS Journal of Photogrammetry and Remote Sensing 164, 41-60, 2020
Comparison of backpack, handheld, under-canopy UAV, and above-canopy UAV laser scanning for field reference data collection in boreal forests
E Hyyppä, X Yu, H Kaartinen, T Hakala, A Kukko, M Vastaranta, J Hyyppä
Remote Sensing 12 (20), 3327, 2020
SLAM-aided stem mapping for forest inventory with small-footprint mobile LiDAR
J Tang, Y Chen, A Kukko, H Kaartinen, A Jaakkola, E Khoramshahi, ...
Forests 6 (12), 4588-4606, 2015
Hyperspectral reflectance signatures and point clouds for precision agriculture by light weight UAV imaging system
E Honkavaara, J Kaivosoja, J Mäkynen, I Pellikka, L Pesonen, H Saari, ...
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information …, 2012
Polarised bidirectional reflectance factor measurements from soil, stones, and snow
J Peltoniemi, T Hakala, J Suomalainen, E Puttonen
Journal of Quantitative Spectroscopy and Radiative Transfer 110 (17), 1940-1953, 2009
Tree species classification from fused active hyperspectral reflectance and LIDAR measurements
E Puttonen, J Suomalainen, T Hakala, E Räikkönen, H Kaartinen, ...
Forest Ecology and Management 260 (10), 1843-1852, 2010
Assessing biodiversity in boreal forests with UAV-based photogrammetric point clouds and hyperspectral imaging
N Saarinen, M Vastaranta, R Näsi, T Rosnell, T Hakala, E Honkavaara, ...
Remote Sensing 10 (2), 338, 2018
Fast and nondestructive method for leaf level chlorophyll estimation using hyperspectral LiDAR
O Nevalainen, T Hakala, J Suomalainen, R Mäkipää, M Peltoniemi, ...
Agricultural and Forest Meteorology 198, 250-258, 2014
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 …
E Honkavaara, MA Eskelinen, I Pölönen, H Saari, H Ojanen, R Mannila, ...
IEEE Transactions on Geoscience and Remote Sensing 54 (9), 5440-5454, 2016
Polarised multiangular reflectance measurements using the finnish geodetic institute field goniospectrometer
J Suomalainen, T Hakala, J Peltoniemi, E Puttonen
Sensors 9 (05), 3891-3907, 2009
Spectral imaging from UAVs under varying illumination conditions
T Hakala, E Honkavaara, H Saari, J Mäkynen, J Kaivosoja, L Pesonen, ...
International Archives of the Photogrammetry, Remote Sensing and Spatial …, 2013
Acquisition of bidirectional reflectance factor dataset using a micro unmanned aerial vehicle and a consumer camera
T Hakala, J Suomalainen, JI Peltoniemi
Remote Sensing 2 (3), 819-832, 2010
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