Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Varis Karitans"'
Autor:
Katrina Laganovska, Aleksejs Zolotarjovs, Mercedes Vázquez, Kirsty Mc Donnell, Janis Liepins, Hadar Ben-Yoav, Varis Karitans, Krisjanis Smits
Publikováno v:
HardwareX, Vol 7, Iss , Pp - (2020)
We demonstrate a low-cost standalone portable spectrophotometer for fast and reliable measurement execution. The data acquired can be both displayed via a dedicated smartphone application or a computer interface, allowing users either to gather and v
Externí odkaz:
https://doaj.org/article/c62819a74e8241d2b93c86db1697c8c9
Publikováno v:
Medžiagotyra, Vol 22, Iss 4, Pp 524-529 (2016)
We describe a technique that allows control of visual stimuli quality through the use of a setup with a polymer dispersed liquid crystal (PDLC) film positioned in the optical pathway of one or both human eyes. Nowadays, PDLC films allow alteration of
Externí odkaz:
https://doaj.org/article/c77fab89e7174926b2f4cd47067744af
Publikováno v:
Journal of Modern Optics. 68:792-797
We simulate vitreous floaters in a model eye and apply a phase retrieval algorithm to recover the structure of the vitreous floaters. The algorithm requires modulating the object under study by a r...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7394f8a5f5506178b483fc05478b2676
https://doi.org/10.1080/09500340.2021.1948624
https://doi.org/10.1080/09500340.2021.1948624
Publikováno v:
Optica Applicata
Acknowledgements – The authors are supported by the postdoctoral project (1.1.1.2/16/I/001; 1.1.1.2/ VIAA/1/16/199, State Education Development Agency, Republic of Latvia).
In the current study, we investigate the effect of uniform white noise
In the current study, we investigate the effect of uniform white noise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35440644c8bd97842c61e5f5258c7066
https://opticaapplicata.pwr.edu.pl/article.php?id=2021200257
https://opticaapplicata.pwr.edu.pl/article.php?id=2021200257
Publikováno v:
Optical Design and Testing X.
Knowledge of the structure of vitreous floaters is crucial to evaluate the need for surgical removal of these floaters. We simulated the phase retrieval of microstructures simulating vitreous floaters by an algorithm PhaseLift and investigate the eff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b9becaeee3665320fcd654a26583549
https://doi.org/10.1117/12.2573785
https://doi.org/10.1117/12.2573785
Publikováno v:
Optics in Health Care and Biomedical Optics X.
Light scattering caused by Tiffen ProMist photographic filters of various grades at different laser radiation 640 nm, 532 nm and 405 nm was objectively studied and compared. The lack of removal of speckles from the scene of laser radiation scattering
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cac37fee927543b9b4f33fe3eaeff7bb
https://doi.org/10.1117/12.2573388
https://doi.org/10.1117/12.2573388
Autor:
Maris Ozolins, Gunta Krumina, Lasma Ekimane, Natalija Lesina, Ilze Laicane, Varis Karitans, Aiga Svede, Evita Kassaliete
Publikováno v:
Journal of Modern Optics. 64:1751-1761
When examining the fundus of the eye with an ophthalmoscope, the intensity of the retinal reflex depends on the refractive state of the eye. In this study, application of this phenomenon for measuring the refractive state of the eye is demonstrated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ccc087c531e26f16c10b9e493f49f05
https://doi.org/10.1080/09500340.2017.1314028
https://doi.org/10.1080/09500340.2017.1314028
Publikováno v:
Imaging and Applied Optics 2019 (COSI, IS, MATH, pcAOP).
We investigate whether a wavefront can be recovered by using a single mask rotated in four different positions. Results show that PhaseLift can recover the wavefront from intensity measurements using such a kind of modulation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::958a0ad6a2160866ad839fd8ca21461e
https://doi.org/10.1364/cosi.2019.jw2a.13
https://doi.org/10.1364/cosi.2019.jw2a.13
Publikováno v:
Applied Optics. 59:8362
We investigate experimentally the phase retrieval of a Kolmogorov phase screen from very sparse data by modulating its amplitude with four binary masks and compare the retrieved phase screen to the ground truth measured with a surface profiler. Previ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79811cbf8c1bdc51101c6ea8904bbd06
https://doi.org/10.1364/ao.399018
https://doi.org/10.1364/ao.399018
Autor:
Kirsty Mc Donnell, Aleksejs Zolotarjovs, Varis Karitans, Janis Liepins, Katrina Laganovska, Mercedes Vázquez, Krisjanis Smits, Hadar Ben-Yoav
Publikováno v:
HardwareX, Vol 7, Iss, Pp-(2020)
HardwareX
HardwareX
This article is based upon COST Action CA16215 and supported by the ERDF , European-Union Project No.1.1.1.2/16/I/001.
We demonstrate a low-cost standalone portable spectrophotometer for fast and reliable measurement execution. The data acquired
We demonstrate a low-cost standalone portable spectrophotometer for fast and reliable measurement execution. The data acquired
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2295acb2acc978763939f1be9a3af140
https://doi.org/10.1016/j.ohx.2020.e00108
https://doi.org/10.1016/j.ohx.2020.e00108