Evaluation of spatial resolution as a function of thickness for time-resolved optical imaging of highly scattering media

1997 ◽  
Vol 24 (3) ◽  
pp. 361-368 ◽  
Author(s):  
David J. Hall ◽  
Jeremy C. Hebden ◽  
David T. Delpy
Keyword(s):  
Optical Imaging ◽  
Spatial Resolution ◽  
Scattering Media ◽  
Time Resolved

scholarly journals Super-resolution time-resolved imaging using computational sensor fusion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
C. Callenberg ◽  
A. Lyons ◽  
D. den Brok ◽  
A. Fatima ◽  
A. Turpin ◽  
...  
Keyword(s):  
Sensor Fusion ◽  
Spatial Resolution ◽  
Temporal Resolution ◽  
Single Photon ◽  
Super Resolution ◽  
Numerical Data ◽  
Data Cube ◽  
Fluorescence Lifetime Imaging ◽  
Time Resolved ◽  
Temporal Precision

AbstractImaging across both the full transverse spatial and temporal dimensions of a scene with high precision in all three coordinates is key to applications ranging from LIDAR to fluorescence lifetime imaging. However, compromises that sacrifice, for example, spatial resolution at the expense of temporal resolution are often required, in particular when the full 3-dimensional data cube is required in short acquisition times. We introduce a sensor fusion approach that combines data having low-spatial resolution but high temporal precision gathered with a single-photon-avalanche-diode (SPAD) array with data that has high spatial but no temporal resolution, such as that acquired with a standard CMOS camera. Our method, based on blurring the image on the SPAD array and computational sensor fusion, reconstructs time-resolved images at significantly higher spatial resolution than the SPAD input, upsampling numerical data by a factor $$12 \times 12$$ 12 × 12 , and demonstrating up to $$4 \times 4$$ 4 × 4 upsampling of experimental data. We demonstrate the technique for both LIDAR applications and FLIM of fluorescent cancer cells. This technique paves the way to high spatial resolution SPAD imaging or, equivalently, FLIM imaging with conventional microscopes at frame rates accelerated by more than an order of magnitude.

Time-Resolved Optical Imaging of an AC Magnetron Discharge

2008 ◽  
Vol 36 (4) ◽  
pp. 1372-1373
Author(s):  
G.C.B. Clarke ◽  
P.J. Kelly ◽  
J.W. Bradley
Keyword(s):  
Optical Imaging ◽  
Magnetron Discharge ◽  
Time Resolved

Time-resolved magneto-optical imaging of Y1Ba2Cu3O7−δthin films in high-frequency AC current regime

2006 ◽  
Vol 19 (6) ◽  
pp. 667-670 ◽  
Author(s):  
A Lucarelli ◽  
G Lüpke ◽  
T J Haugan ◽  
G A Levin ◽  
P N Barnes
Keyword(s):  
Optical Imaging ◽  
High Frequency ◽  
Time Resolved ◽  
Current Regime ◽  
Ac Current ◽  
High Frequency Ac
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