Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Tapani Hirvonen"'
Publikováno v:
Sensors, Vol 13, Iss 11, Pp 14500-14510 (2013)
In this study, we introduce a wide spectral range (200–2500 nm) imaging system with a 250 μm minimum spatial resolution, which can be freely modified for a wide range of resolutions and measurement geometries. The system has been tested for reflec
Externí odkaz:
https://doaj.org/article/2c0eccfd4f3e48d58f2fa819e6ff35bb
Autor:
Markku Keinänen, Sarita Keski-Saari, Markku Nygren, Laure Fauch, Tapani Hirvonen, Lars Granlund, Ilkka Porali, Katri Himanen, Elina Oksanen, Markku Hauta-Kasari, Jennifer Dumont, Jouni Hiltunen, Maxime Mistretta, Ville Heikkinen
Publikováno v:
Computers and Electronics in Agriculture. 116:118-124
Hyperspectral and thermal lifetime imaging were used to assess spruce seed quality.Viable, empty and infested seeds were resolved with high accuracy with both methods.400-1000nm data was not as informative as 1000-2500nm and thermal decay data.Classi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5482ef04b67c51e4d9416f7968f912f
https://doi.org/10.1016/j.compag.2015.06.010
https://doi.org/10.1016/j.compag.2015.06.010
Autor:
Elísabet Chorro, Xana Delpueyo, Tapani Hirvonen, Esther Perales, Jaume Pujol, Barbara Schael, Meritxell Vilaseca
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I
This study analyzes the repeatability, reproducibility and accuracy of a new hyperspectral system based on a pushbroom sensor as a means of measuring spectral features and color of materials and objects. The hyperspectral system consisted of a CCD ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00885b7337639cdd85fcbbf56c427979
https://doi.org/10.1002/col.21851
https://doi.org/10.1002/col.21851
Publikováno v:
Holzforschung. 66:877-881
Heartwood detection for Scotch pine (Pinus sylvestris) is possible via several different methods, such as X-ray and infrared cameras. X-ray systems are often very expensive and need huge modifications of sawmill equipment for implementation. Infrared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4057c659c2def1eed30385138c736d2
https://doi.org/10.1515/hf-2011-0131
https://doi.org/10.1515/hf-2011-0131
Publikováno v:
Sensors; Volume 13; Issue 11; Pages: 14500-14510
Sensors (Basel, Switzerland)
Sensors, Vol 13, Iss 11, Pp 14500-14510 (2013)
Sensors (Basel, Switzerland)
Sensors, Vol 13, Iss 11, Pp 14500-14510 (2013)
In this study, we introduce a wide spectral range (200–2500 nm) imaging system with a 250 μm minimum spatial resolution, which can be freely modified for a wide range of resolutions and measurement geometries. The system has been tested for reflec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0244401fb6e2de8b30b67d9b3bac7c8
Publikováno v:
Journal of the Optical Society of America A. 33:1095
Hyperspectral reflectance factor image estimations were performed in the 400-700 nm wavelength range using a portable consumer-level laptop display as an adjustable light source for a trichromatic camera. Targets of interest were ColorChecker Classic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40ac8e2d6d07616b5e073bf1ec3a4787
https://doi.org/10.1364/josaa.33.001095
https://doi.org/10.1364/josaa.33.001095
Publikováno v:
Journal of Imaging Science and Technology. 58:10503-1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ce6510402eee76e25e1c836e0c1226d
https://doi.org/10.2352/j.imagingsci.technol.2014.58.1.010503
https://doi.org/10.2352/j.imagingsci.technol.2014.58.1.010503
Autor:
Hirvonen, Tapani1 tapani.r.hirvonen@uef.fi, Penttinen, Niko1 npenttin@uef.fi, Hauta-Kasari, Markku1 markku.hauta-kasari@uef.fi, Sorjonen, Mika2 tapani.r.hirvonen@uef.fi, Peiponen, Kai-Erik1 kai.peiponen@uef.fi
Publikováno v:
Sensors (14248220). Nov2013, Vol. 13 Issue 11, p14500-14510. 11p.
Publikováno v:
Proceedings of SPIE; 5/6/2018, Vol. 10697, p1-11, 11p
Publikováno v:
Color Research & Application; Dec2014, Vol. 39 Issue 6, p532-534, 1111p