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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1967 1
1968 1
1971 1
1972 2
1974 1
1975 1
1977 1
1978 1
1980 5
1981 2
1982 7
1983 7
1984 3
1985 5
1986 5
1987 5
1988 5
1989 8
1990 8
1991 5
1992 13
1993 9
1994 13
1995 14
1996 5
1997 13
1998 13
1999 7
2000 12
2001 7
2002 10
2003 8
2004 8
2005 18
2006 9
2007 13
2008 15
2009 22
2010 13
2011 12
2012 13
2013 17
2014 20
2015 15
2016 10
2017 15
2018 23
2019 20
2020 18
2021 19
2022 14
2023 20
2024 4

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491 results

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Page 1
Enhancing underwater optical imaging by using a low-pass polarization filter.
Amer KO, Elbouz M, Alfalou A, Brosseau C, Hajjami J. Amer KO, et al. Opt Express. 2019 Jan 21;27(2):621-643. doi: 10.1364/OE.27.000621. Opt Express. 2019. PMID: 30696146 Free article.
Object identification in highly turbid optical media depends mainly on the quality of collected images. Underwater images acquired in a turbid environment are generally of very poor quality. ...The focus of this paper is to report the principle and validation of a fast and …
Object identification in highly turbid optical media depends mainly on the quality of collected images. Underwater images acquired in …
Adjustable active optical low-pass filter.
Kreymerman G. Kreymerman G. Appl Opt. 2012 Jan 10;51(2):268-72. doi: 10.1364/ao.51.000268. Appl Opt. 2012. PMID: 22270524
This paper presents an active optical low-pass filter (AOLPF) capable of changing the resolution of an imaging system on demand in order to remove aliasing noise from a sampling image. This is advantageous over conventional optical low- …
This paper presents an active optical low-pass filter (AOLPF) capable of changing the resolution of an imaging s …
Low-Pass Filtered Volumetric Shadows.
Ament M, Sadlo F, Dachsbacher C, Weiskopf D. Ament M, et al. IEEE Trans Vis Comput Graph. 2014 Dec;20(12):2437-46. doi: 10.1109/TVCG.2014.2346333. IEEE Trans Vis Comput Graph. 2014. PMID: 26356957
We compute the shadowing of a point in the data set by employing spatial filtering of the optical depth over a finite area patch pointing toward each light source. Conceptually, the area patch spans a volumetric region that is sampled with shadow rays; afterward, th …
We compute the shadowing of a point in the data set by employing spatial filtering of the optical depth over a finite area pat …
Accommodative stimulus-response curves to low-pass filtered natural images.
Esteve-Taboada JJ, Bernal-Molina P, Montés-Micó R, Ferrer-Blasco T. Esteve-Taboada JJ, et al. Graefes Arch Clin Exp Ophthalmol. 2018 Sep;256(9):1731-1737. doi: 10.1007/s00417-018-3983-z. Epub 2018 Apr 17. Graefes Arch Clin Exp Ophthalmol. 2018. PMID: 29666916
Measurements were taken at different accommodative demands. Target images were low-pass filtered versions of a natural image that were obtained applying different digital spatial filters that limited the spatial frequency content of the natural image. …
Measurements were taken at different accommodative demands. Target images were low-pass filtered versions of a natural …
On the Diverse Functions of Electrical Synapses.
Vaughn MJ, Haas JS. Vaughn MJ, et al. Front Cell Neurosci. 2022 Jun 9;16:910015. doi: 10.3389/fncel.2022.910015. eCollection 2022. Front Cell Neurosci. 2022. PMID: 35755782 Free PMC article. Review.
However, a growing body of literature shows there is greater complexity to the computational function of electrical synapses. The paired membranes that embed electrical synapses act as low-pass filters, and as such, electrical synapses can preferentially tran …
However, a growing body of literature shows there is greater complexity to the computational function of electrical synapses. The paired mem …
Hybrid FPGA-CPU pupil tracker.
Kowalski B, Huang X, Steven S, Dubra A. Kowalski B, et al. Biomed Opt Express. 2021 Sep 22;12(10):6496-6513. doi: 10.1364/BOE.433766. eCollection 2021 Oct 1. Biomed Opt Express. 2021. PMID: 34745752 Free PMC article.
An off-axis monocular pupil tracker designed for eventual integration in ophthalmoscopes for eye movement stabilization is described and demonstrated. The instrument consists of light-emitting diodes, a camera, a field-programmable gate array (FPGA) and a central processin …
An off-axis monocular pupil tracker designed for eventual integration in ophthalmoscopes for eye movement stabilization is described …
Accommodation responses following contrast adaptation.
Sanz Diez P, Schaeffel F, Wahl S, Ohlendorf A. Sanz Diez P, et al. Vision Res. 2020 May;170:12-17. doi: 10.1016/j.visres.2020.03.003. Epub 2020 Mar 24. Vision Res. 2020. PMID: 32217367 Free article.
A 2-stage procedure was used: (1) the minimum spatial frequency content necessary to produce a proper individual AR; and (2) the AR was compared before and after adaptation to low-pass (s = -0.5), control (s = 0) and high-pass (s = +0.5) filtered videos. ...M …
A 2-stage procedure was used: (1) the minimum spatial frequency content necessary to produce a proper individual AR; and (2) the AR was comp …
Low-pass filtering based polarimetric dehazing method for dense haze removal.
Liang J, Ren L, Liang R. Liang J, et al. Opt Express. 2021 Aug 30;29(18):28178-28189. doi: 10.1364/OE.427629. Opt Express. 2021. PMID: 34614955 Free article.
To overcome this drawback and enhance the capability and stability of the polarimetric dehazing method, digital image processing algorithms or bias parameters need to be added into the method, however, they will make the algorithm complex and time consuming. In this paper, using …
To overcome this drawback and enhance the capability and stability of the polarimetric dehazing method, digital image processing algorithms …
Low-pass parabolic FFT filter for airborne and satellite lidar signal processing.
Jiao Z, Liu B, Liu E, Yue Y. Jiao Z, et al. Sensors (Basel). 2015 Oct 14;15(10):26085-95. doi: 10.3390/s151026085. Sensors (Basel). 2015. PMID: 26473881 Free PMC article.
In order to reduce random errors of the lidar signal inversion, a low-pass parabolic fast Fourier transform filter (PFFTF) was introduced for noise elimination. A compact airborne Raman lidar system was studied, which applied PFFTF to process lidar signals. M …
In order to reduce random errors of the lidar signal inversion, a low-pass parabolic fast Fourier transform filter (PFF …
The Thalamus as a Low Pass Filter: Filtering at the Cellular Level does Not Equate with Filtering at the Network Level.
Connelly WM, Laing M, Errington AC, Crunelli V. Connelly WM, et al. Front Neural Circuits. 2016 Jan 14;9:89. doi: 10.3389/fncir.2015.00089. eCollection 2015. Front Neural Circuits. 2016. PMID: 26834570 Free PMC article.
Various propositions exist, likening the thalamus to a gate, or a high pass filter. Here, using a simple leaky integrate and fire model based on physiological parameters, we show that the thalamus behaves akin to a low pass filter. ...
Various propositions exist, likening the thalamus to a gate, or a high pass filter. Here, using a simple leaky integrate and fire mod …
491 results