
 | 
30 Oct 2025
             
         
    Evaluation of forage grass biomass estimation models using multispectral drone imaging across multiple sites 
        
            Raquel A. Oliveira, Roope Näsi, Jonas Edström, Joel Pitkänen, Panu Korhonen, Oiva Niemeläinen, Niko Koivumäki, Jere Kaivosoja, and Eija Honkavaara
        
            
            
            
            
            
            
            
            
            
        Related authors
        
            
            
                    
                        
                            
                            
                            
                                     
                                A Multiview UAV Imagery-Based Method for Assessing Spruce Tree Health at the Individual Tree Level
                                Alva Anttonen, Axel Päivänsalo, Emma Turkulainen, Raquel Alves Oliveira, Kirsi Karila, Niko Koivumäki, Roope Näsi, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 13–18, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-13-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-13-2025, 2025
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                Optimizing high-resolution multi-view drone imaging for detecting foreign grains in gluten-free oat production fields
                                Roope Näsi, Raquel A. Oliveira, Stefan Rua, Ehsan Khormashahi, Axel Päivänsalo, Oiva Niemeläinen, Eija Honkavaara, and Markku Niskanen
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 235–240, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-235-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-235-2025, 2025
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                Domain Generalization in Deep Learning for Forest Health Monitoring Using Multispectral UAS Data
                                Emma Turkulainen, Raquel Alves Oliveira, Niko Koivumäki, Päivi Lyytikäinen-Saarenmaa, Roope Näsi, Mikko Pelto-Arvo, Johanna Tuviala, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 285–291, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-285-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-285-2025, 2025
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                Large-Area UAS-Based Forest Health Monitoring Utilizing a Hydrogen-Powered Airship and Multispectral Imaging
                                Emma Turkulainen, Janne Hietala, Jiri Jormakka, Johanna Tuviala, Raquel Alves de Oliveira, Niko Koivumäki, Kirsi Karila, Roope Näsi, Juha Suomalainen, Mikko Pelto-Arvo, Päivi Lyytikäinen-Saarenmaa, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-3-2024, 559–564, https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-559-2024,https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-559-2024, 2024
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                COMBINING YOLO V5 AND TRANSFER LEARNING FOR SMOKE-BASED WILDFIRE DETECTION IN BOREAL FORESTS
                                A.-M. Raita-Hakola, S. Rahkonen, J. Suomalainen, L. Markelin, R. Oliveira, T. Hakala, N. Koivumäki, E. Honkavaara, and I. Pölönen
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-1-W2-2023, 1771–1778, https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1771-2023,https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1771-2023, 2023
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                HYPERSPECTRAL UAS IMAGERY FOR GRASS SWARDS BIOMASS AND NITROGEN ESTIMATION
                                R. A. Oliveira, R. Näsi, P. Korhonen, A. Mustonen, O. Niemeläinen, N. Koivumäki, T. Hakala, J. Suomalainen, J. Kaivosoja, and E. Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-1-W2-2023, 1861–1866, https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1861-2023,https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1861-2023, 2023
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                TILT CORRECTION OF ONBOARD DRONE IRRADIANCE MEASUREMENTS – EVALUATION OF HYPERSPECTRAL METHODS
                                J. Suomalainen, R. A. Oliveira, T. Hakala, N. Koivumäki, L. Markelin, R. Näsi, and E. Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B1-2022, 67–72, https://doi.org/10.5194/isprs-archives-XLIII-B1-2022-67-2022,https://doi.org/10.5194/isprs-archives-XLIII-B1-2022-67-2022, 2022
                             
                            
                            
                         
                     
                    
             
    
            
                    
                    
                        
                            
                            
                            
                                     
                                A Multiview UAV Imagery-Based Method for Assessing Spruce Tree Health at the Individual Tree Level
                                Alva Anttonen, Axel Päivänsalo, Emma Turkulainen, Raquel Alves Oliveira, Kirsi Karila, Niko Koivumäki, Roope Näsi, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 13–18, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-13-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-13-2025, 2025
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                Autonomous Drone Navigation in Forest Environments Using Deep Learning
                                Guglielmo Del Col, Väinö Karjalainen, Teemu Hakala, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 87–93, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-87-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-87-2025, 2025
                             
                            
                            
                         
                     
                    
                    
                        
                            
                            
                            
                                     
                                A Collaborative GIS for Planning of Urban Drone Launch and Landing Site Locations
                                Miloš N. Mladenović, Muhammad Atiullah Saif, Eija Honkavaara, Pyry Kettunen, Mikko Rönneberg, Anssi Jussila, Leo Niemi, and Miia Farstad
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 227–233, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-227-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-227-2025, 2025
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                Optimizing high-resolution multi-view drone imaging for detecting foreign grains in gluten-free oat production fields
                                Roope Näsi, Raquel A. Oliveira, Stefan Rua, Ehsan Khormashahi, Axel Päivänsalo, Oiva Niemeläinen, Eija Honkavaara, and Markku Niskanen
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 235–240, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-235-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-235-2025, 2025
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                Domain Generalization in Deep Learning for Forest Health Monitoring Using Multispectral UAS Data
                                Emma Turkulainen, Raquel Alves Oliveira, Niko Koivumäki, Päivi Lyytikäinen-Saarenmaa, Roope Näsi, Mikko Pelto-Arvo, Johanna Tuviala, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-W11-2025, 285–291, https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-285-2025,https://doi.org/10.5194/isprs-archives-XLVIII-2-W11-2025-285-2025, 2025
                             
                            
                            
                         
                     
                    
                    
                        
                            
                            
                            
                                     
                                Large-Area UAS-Based Forest Health Monitoring Utilizing a Hydrogen-Powered Airship and Multispectral Imaging
                                Emma Turkulainen, Janne Hietala, Jiri Jormakka, Johanna Tuviala, Raquel Alves de Oliveira, Niko Koivumäki, Kirsi Karila, Roope Näsi, Juha Suomalainen, Mikko Pelto-Arvo, Päivi Lyytikäinen-Saarenmaa, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-3-2024, 559–564, https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-559-2024,https://doi.org/10.5194/isprs-archives-XLVIII-3-2024-559-2024, 2024
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                Autonomous robotic drone system for mapping forest interiors
                                Väinö Karjalainen, Niko Koivumäki, Teemu Hakala, Anand George, Jesse Muhojoki, Eric Hyyppa, Juha Suomalainen, and Eija Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-2-2024, 167–172, https://doi.org/10.5194/isprs-archives-XLVIII-2-2024-167-2024,https://doi.org/10.5194/isprs-archives-XLVIII-2-2024-167-2024, 2024
                             
                            
                            
                         
                     
                    
                    
                        
                            
                            
                            
                                     
                                COMBINING YOLO V5 AND TRANSFER LEARNING FOR SMOKE-BASED WILDFIRE DETECTION IN BOREAL FORESTS
                                A.-M. Raita-Hakola, S. Rahkonen, J. Suomalainen, L. Markelin, R. Oliveira, T. Hakala, N. Koivumäki, E. Honkavaara, and I. Pölönen
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-1-W2-2023, 1771–1778, https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1771-2023,https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1771-2023, 2023
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                HYPERSPECTRAL UAS IMAGERY FOR GRASS SWARDS BIOMASS AND NITROGEN ESTIMATION
                                R. A. Oliveira, R. Näsi, P. Korhonen, A. Mustonen, O. Niemeläinen, N. Koivumäki, T. Hakala, J. Suomalainen, J. Kaivosoja, and E. Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-1-W2-2023, 1861–1866, https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1861-2023,https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-1861-2023, 2023
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                A DRONE SYSTEM FOR AUTONOMOUS MAPPING FLIGHTS INSIDE A FOREST – A FEASIBILITY STUDY AND FIRST RESULTS
                                V. Karjalainen, T. Hakala, A. George, N. Koivumäki, J. Suomalainen, and E. Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-1-W2-2023, 597–603, https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-597-2023,https://doi.org/10.5194/isprs-archives-XLVIII-1-W2-2023-597-2023, 2023
                             
                            
                            
                         
                     
                    
                        
                            
                            
                            
                                     
                                TILT CORRECTION OF ONBOARD DRONE IRRADIANCE MEASUREMENTS – EVALUATION OF HYPERSPECTRAL METHODS
                                J. Suomalainen, R. A. Oliveira, T. Hakala, N. Koivumäki, L. Markelin, R. Näsi, and E. Honkavaara
                                    Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B1-2022, 67–72, https://doi.org/10.5194/isprs-archives-XLIII-B1-2022-67-2022,https://doi.org/10.5194/isprs-archives-XLIII-B1-2022-67-2022, 2022