Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Yukiyasu Yoshinaga"'
Autor:
Hiroshi Enaida, Yukiyasu Yoshinaga, Toshio Hisatomi, Daisuke Nakamura, Yasuhiro Ikeda, Daichi Kantake, Shinichiro Ishikawa, Tatsuro Ishibashi, Noriko Yoshida
Publikováno v:
Graefe's Archive for Clinical and Experimental Ophthalmology. 257:557-565
This study was conducted in order to develop a novel noninvasive system for measurement and imaging of the arterial oxygen density ratio (ODR) in the retinal microcirculation. We developed a system composed of two digital cameras with two different f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f107af26971b3d85d16bbbfcd936141
https://doi.org/10.1007/s00417-018-04211-z
https://doi.org/10.1007/s00417-018-04211-z
Autor:
Hiroshi Enaida, Shigeo Yoshida, Tatsuro Ishibashi, Yusuke Oshima, Yasuhiro Ikeda, Kazuaki Kadonosono, Yoshiyuki Hachisuka, Yukiyasu Yoshinaga, Toshio Hisatomi
Publikováno v:
Graefe's Archive for Clinical and Experimental Ophthalmology. 251:441-451
We developed a new artificial image enhancement system and evaluated its usefulness in controlling intraoperative reflection and enhancing of Brilliant Blue G (BBG) staining.The system was composed of three kinds of filters (a polarizing filter, a bl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c41620da664779acb3176a0a63b91a6e
https://doi.org/10.1007/s00417-012-2035-3
https://doi.org/10.1007/s00417-012-2035-3
Publikováno v:
Systems and Computers in Japan. 35:50-58
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36417318e6a9042f8a482eadb0c7a164
https://doi.org/10.1002/scj.10550
https://doi.org/10.1002/scj.10550
Autor:
Hidefumi Kobatake, Yukiyasu Yoshinaga
Publikováno v:
Systems and Computers in Japan. 31:49-58
This paper proposes a new method of extracting lines characterized as long and narrow bright regions, or curvilinear convex regions, in images. Generally, the contrast and the line width cause difficulty in extraction of ridgelines and skeletons. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da5688b8977dc96a1bda00855b2bf5db
https://doi.org/10.1002/(sici)1520-684x(200003)31:3<49::aid-scj6>3.0.co
https://doi.org/10.1002/(sici)1520-684x(200003)31:3<49::aid-scj6>3.0.co
Autor:
Tatsuo Okada, Hiroshi Enaida, Tatsuro Ishibashi, Yukiyasu Yoshinaga, Daisuke Nakamura, S. Sibasato, K. Tatsuguchi
Publikováno v:
TENCON 2010 - 2010 IEEE Region 10 Conference.
We proposed a new visualization procedure for oxygen saturation in retinal capillary vessels by spectroscopic imaging. Four-wavelength spectroscopic imaging was used for a mesurement of capillary vessel region.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a90f49ddb4bb790e2fc3b9df50e235d6
https://doi.org/10.1109/tencon.2010.5686130
https://doi.org/10.1109/tencon.2010.5686130
Autor:
M. Ogata, K. Tatsuguchi, Yukiyasu Yoshinaga, Daisuke Nakamura, Tatsuo Okada, Hiroshi Enaida, N. Matsuoka, Tatsuro Ishibashi
Publikováno v:
SPIE Proceedings.
We have proposed a new automatic visualization procedure based the ratio of optical densities (ODs) obtained at two different wavelength for the oxygen saturation imaging in human retinal vessels. This method utilized the morphological processing and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::719c4f8aee0970b9d842643d6998af6d
https://doi.org/10.1117/12.841434
https://doi.org/10.1117/12.841434
Autor:
Tatsuro Ishibashi, N. Matsuoka, Yukiyasu Yoshinaga, K. Tatsuguchi, Daisuke Nakamura, Tatsuo Okada, Hiroshi Enaida, M. Ogata
Publikováno v:
2009 Conference on Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics.
We proposed a new visualization procedure for oxygen saturation of retinal blood vessels by spectroscopic imaging of two-wavelength images. Morphological processing and line convergence index filter were used for the calculating processing.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7dfa297163a14ed09641437c83d75a7
https://doi.org/10.1109/cleopr.2009.5292473
https://doi.org/10.1109/cleopr.2009.5292473
Autor:
Daisuke Nakamura, S. Sueda, N. Matsuoka, Tatsuro Ishibashi, H Enaida, Tatsuo Okada, Yukiyasu Yoshinaga
Publikováno v:
Ophthalmic Technologies XIX.
A new automatic visualization procedure for the oxygen saturation imaging from multi-spectral imaging of human retinal vessels has been proposed. Two-wavelength retinal fundus images at 545 and 560 nm, which were oxygen insensitive and oxygen sensiti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d38ed8ec2e31b099afdcdd28a4f0e21d
https://doi.org/10.1117/12.807537
https://doi.org/10.1117/12.807537
Autor:
Yukiyasu Yoshinaga, Seiji Kawamura, Masatoshi Ishibashi, Naofumi Hayabuchi, Teruo Miyagawa, Hidemichi Kawata, Yoshifumi Fukudome, Noriyoshi Umezaki, Hisao Miura, Seiichiro Morita, Shigehiro Fukushima
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 61(7)
The temporal image subtraction technique was applied to bone scintigraphy, using Photoshop (commercially available image processing software) and Morpher (public domain warping software). For the temporal subtraction images, 81 subtraction images (19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91434470e2e378ed77edaf82233e7b64
https://pubmed.ncbi.nlm.nih.gov/16049413
https://pubmed.ncbi.nlm.nih.gov/16049413
Publikováno v:
ICIP (2)
In this work, we propose a new filter to detect and enhance lines in real images with varying contrast. It is robust against noise disturbances and also its output does not depend on the contrast. We first define the line-convergence vector field mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68a58c50c777efdabbe6bb9108959271
https://doi.org/10.1109/icip.1999.822989
https://doi.org/10.1109/icip.1999.822989