Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Uygar Tuna"'
Autor:
Lassi Paavolainen, Erman Acar, Uygar Tuna, Sari Peltonen, Toshio Moriya, Pan Soonsawad, Varpu Marjomäki, R Holland Cheng, Ulla Ruotsalainen
Publikováno v:
PLoS ONE, Vol 9, Iss 10, p e108978 (2014)
Electron tomography (ET) of biological samples is used to study the organization and the structure of the whole cell and subcellular complexes in great detail. However, projections cannot be acquired over full tilt angle range with biological samples
Externí odkaz:
https://doaj.org/article/cf4804fd2e9d45de8910482730e97070
Autor:
Moncef Gabbouj, Alexandros Iosifidis, Jenni Raitoharju, Firas Laakom, Jarno Nikkanen, Uygar Tuna
Publikováno v:
Laakom, F, Raitoharju, J, Iosifidis, A, Tuna, U, Nikkanen, J & Gabbouj, M 2020, Probabilistic Color Constancy . in 2020 IEEE International Conference on Image Processing, ICIP 2020-Proceedings ., 9190893, IEEE, Proceedings-International Conference on Image Processing, ICIP, vol. 2020-October, pp. 978-982, 2020 IEEE International Conference on Image Processing, ICIP 2020, Virtual, Abu Dhabi, United Arab Emirates, 25/09/2020 . https://doi.org/10.1109/ICIP40778.2020.9190893
ICIP
ICIP
In this paper, we propose a novel unsupervised color constancy method, called Probabilistic Color Constancy (PCC). We define a framework for estimating the illumination of a scene by weighting the contribution of different image regions using a graph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9647d97cbcde404b215439c8bfd72ee3
https://pure.au.dk/portal/da/publications/probabilistic-color-constancy(bad29e3f-310f-460b-826f-57c143520299).html
https://pure.au.dk/portal/da/publications/probabilistic-color-constancy(bad29e3f-310f-460b-826f-57c143520299).html
Publikováno v:
Annals of Nuclear Medicine. 28:417-429
The aim of the study was (1) to evaluate the reconstruction strategies with dynamic [ $$_{ }^{11}\mathrm C$$ ]-raclopride human positron emission tomography (PET) studies acquired from ECAT high-resolution research tomograph (HRRT) scanner and (2) to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f33d778b3e12a773c16fd8bf6909158a
https://doi.org/10.1007/s12149-014-0832-y
https://doi.org/10.1007/s12149-014-0832-y
Autor:
P. Weilhammer, C. Casella, Matthieu Heller, E. Nappi, Viviana Fanti, Uygar Tuna, John E. Gillam, A. Rudge, C. Joram, Thomas Schneider, Günther Dissertori, Steinar Stapnes, Werner Lustermann, Felicitas Pauss, Magdalena Rafecas, D. Schinzel, Jacques Séguinot, Josep F. Oliver, E. Chesi, E. Bolle, R. De Leo, Ulla Ruotsalainen, P. Solevi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 718:126-129
AX-PET stands for a new geometrical concept for a high resolution and high sensitivity PET scanner, based on an axial arrangement of long scintillating crystals in the tomograph, for a parallax free PET detector. Two identical AX-PET modules – cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2abe22db024451ce7b1acfad01633e19
https://doi.org/10.1016/j.nima.2012.07.054
https://doi.org/10.1016/j.nima.2012.07.054
Autor:
Josep F. Oliver, P. Weilhammer, Matthieu Heller, Uygar Tuna, Steinar Stapnes, A. Rudge, Thomas Schneider, Viviana Fanti, Marta Lai, Ulla Ruotsalainen, E. Bolle, Jacques Séguinot, John E. Gillam, P. Solevi, Magdalena Rafecas, Werner Lustermann, C. Joram, R. De Leo, E. Chesi, Felicitas Pauss, C. Casella, E. Nappi, Günther Dissertori, D. Schinzel
Publikováno v:
Physics in Medicine and Biology. 58:5495-5510
AX-PET is a novel PET detector based on axially oriented crystals and orthogonal wavelength shifter (WLS) strips, both individually read out by silicon photo-multipliers. Its design decouples sensitivity and spatial resolution, by reducing the parall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8ee23e2975a45386f3723a16da0f6a8
https://doi.org/10.1088/0031-9155/58/16/5495
https://doi.org/10.1088/0031-9155/58/16/5495
Autor:
Thomas Schneider, P. Weilhammer, John E. Gillam, Günther Dissertori, Felicitas Pauss, Josep F. Oliver, E. Bolle, Jacques Séguinot, D. Schinzel, Matthieu Heller, P. Solevi, Werner Lustermann, A. Rudge, Viviana Fanti, C. Casella, E. Nappi, Magdalena Rafecas, Uygar Tuna, R. De Leo, C. Joram, U. Ruotsalainen, Steinar Stapnes, E. Chesi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 695:129-134
The AX-PET collaboration has developed a novel concept for high resolution PET imaging to overcome some of the performance limitations of classical PET cameras, in particular the compromise between spatial resolution and sensitivity introduced by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5a67c82517320f71bd3dac7900ed796
https://doi.org/10.1016/j.nima.2011.12.114
https://doi.org/10.1016/j.nima.2011.12.114
Publikováno v:
Physics in Medicine and Biology. 55:6125-6139
The range of positron emitters and their labeled compounds have led to high-resolution PET scanners becoming widely used, not only in clinical and pre-clinical studies but also in plant studies. A high-resolution PET scanner, plant tomographic imagin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::021a68f2cc07868c17b20304a35e0e10
https://doi.org/10.1088/0031-9155/55/20/006
https://doi.org/10.1088/0031-9155/55/20/006
Autor:
Sari Peltonen, Lassi Paavolainen, Ulla Ruotsalainen, Erman Acar, Toshio Moriya, Uygar Tuna, R. Holland Cheng, Varpu Marjomäki, Pan Soonsawad
Publikováno v:
PLoS ONE, Vol 9, Iss 10, p e108978 (2014)
PLoS ONE
PloS one, vol 9, iss 10
PLoS ONE
PloS one, vol 9, iss 10
Electron tomography (ET) of biological samples is used to study the organization and the structure of the whole cell and subcellular complexes in great detail. However, projections cannot be acquired over full tilt angle range with biological samples
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db0642f4f7ab6254dbb43c32947d2e9e
http://europepmc.org/articles/PMC4184818?pdf=render
http://europepmc.org/articles/PMC4184818?pdf=render
Autor:
Jarmo Teuho, Virva Saunavaara, Jani Linden, Uygar Tuna, Tuula Tolvanen, Jarkko Johansson, Mika Teräs
Publikováno v:
2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC).
Choice of the PET scanner and image reconstruction parameters have significant impact in quantitative positron-emission tomography (PET). Hoffman phantom is probably the most widely used test object for assessing this impact in brain PET studies. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5c0c0caf728349b1531bbd0c4f5d3c4
https://doi.org/10.1109/nssmic.2013.6829376
https://doi.org/10.1109/nssmic.2013.6829376
Publikováno v:
2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC).
Metal artifacts and their reduction is a common problem in imaging field because artifacts arising from these high density objects often hinder the underlying anatomical structures. This study investigates the performance of sequentially applied maxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d667e4e7a1c04259d75b76d78d350769
https://doi.org/10.1109/nssmic.2013.6829179
https://doi.org/10.1109/nssmic.2013.6829179