Zobrazeno 1 - 10
of 259
pro vyhledávání: '"E. Honkavaara"'
Autor:
E. Turkulainen, J. Hietala, J. Jormakka, J. Tuviala, R. A. de Oliveira, N. Koivumäki, K. Karila, R. Näsi, J. Suomalainen, M. Pelto-Arvo, P. Lyytikäinen-Saarenmaa, E. Honkavaara
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-3-2024, Pp 559-564 (2024)
Climate change is threatening forest ecosystems worldwide by inducing various abiotic and biotic disturbances. In Europe, the European spruce bark beetle (Ips typographus L.) poses a significant threat, causing serious mortality in mature Norway spru
Externí odkaz:
https://doaj.org/article/7f0869170d394e9098bc2dd5e0105d29
Autor:
V. Karjalainen, N. Koivumäki, T. Hakala, A. George, J. Muhojoki, E. Hyyppa, J. Suomalainen, E. Honkavaara
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-2-2024, Pp 167-172 (2024)
During the last decade, the use of drones in forest monitoring and remote sensing has become highly popular. While most of the monitoring tasks take place in high altitudes and open air, in the last few years drones have also gained interest in under
Externí odkaz:
https://doaj.org/article/d09cc5c8065d46a5834036375b57666c
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-2-2024, Pp 219-224 (2024)
Production of orthophotos and orthomosaics from airborne imaging has been standard procedure of National mapping agencies for decades. Various aspects affect to the colour, or tones of the images: time of the day and year, atmosphere, illumination co
Externí odkaz:
https://doaj.org/article/db343902368a4700a2a705d119aac7de
Autor:
A.-M. Raita-Hakola, S. Rahkonen, J. Suomalainen, L. Markelin, R. Oliveira, T. Hakala, N. Koivumäki, E. Honkavaara, I. Pölönen
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-1-W2-2023, Pp 1771-1778 (2023)
Wildfires present severe threats to various aspects of ecosystems, human settlements, and the environment. Early detection plays a critical role in minimizing the destructive consequences of wildfires. This study introduces an innovative approach for
Externí odkaz:
https://doaj.org/article/931aa5d2308446f49f6e07c10442d0bc
Autor:
R. A. Oliveira, R. Näsi, P. Korhonen, A. Mustonen, O. Niemeläinen, N. Koivumäki, T. Hakala, J. Suomalainen, J. Kaivosoja, E. Honkavaara
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-1-W2-2023, Pp 1861-1866 (2023)
Monitoring agricultural grass fields is particularly important for meat and milk production in Northern Europe, where three harvests occur during a growing season to maximize yields. Reliable data on forage, including biomass and nitrogen concentrati
Externí odkaz:
https://doaj.org/article/a106bb17d40348fc98d18ba7f907fd25
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-1-W2-2023, Pp 597-603 (2023)
In recent years, drones have gained wide popularity in forest research and operational applications. Over the forest canopy, where Global Navigation Satellite Systems (GNSS) are available, the flights are already highly automated. However, under the
Externí odkaz:
https://doaj.org/article/f31c3bf370f74499a7fb7621a243cabd
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLVIII-1-W2-2023, Pp 1987-1987 (2023)
Externí odkaz:
https://doaj.org/article/fc5374bca26c413b9ebc3375457069c7
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLIII-B1-2022, Pp 67-72 (2022)
An accurate onboard irradiance measurement on drones is a requirement direct reflectance transformation of aerial images and remote sensing data without use of on-ground reference targets. One of the major error sources in onboard irradiance measurem
Externí odkaz:
https://doaj.org/article/7d5b2cdcd2564ae988dcd387fa1c172b
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLIII-B3-2021, Pp 823-828 (2021)
Most methods developed to map crop fields with high-quality are based on optical image time-series. However, often accuracy of these approaches is deteriorated due to clouds and cloud shadows, which can decrease the availably of optical data required
Externí odkaz:
https://doaj.org/article/f7560c01e22343cfb66f679a1008ba83
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLII-3-W12-2020, Pp 49-54 (2020)
The objective of this study is to evaluate the spectral difference between and within 11 tree species belonging to Brazilian Atlantic Forest located in the countryside of São Paulo State, Brazil. Tree species with different development stages may ha
Externí odkaz:
https://doaj.org/article/a9e982cca8ef44869858d3ce71eed8b9