Quantitative comparison of different-shaped wavefront sensors and preliminary results for defocus aberrations on a mechanical eye [PDF]
, 2006 Luís Alberto Vieira de Carvalho +3 more
openalex +1 more source
SDF‐Guided Point Cloud Generation Framework for Mesh‐Free CFD
International Journal for Numerical Methods in Fluids, EarlyView.This paper presents different methods for generating clouds of points around objects for use with meshless methods in computational fluid dynamics. This image shows the cloud generated around the original ROBIN body. ABSTRACT Meshing is a bottleneck of CFD workflows, especially when complex geometries are considered.
Tao Zhang, George N. Barakos
wiley +1 more source
Optimization of Iterative Control Algorithms for High-Resolution Adaptive Optics Systems
IEEE Photonics JournalAs the number of wavefront sensor subapertures and deformable mirror actuators in adaptive optics systems increases, the computational time of the direct gradient wavefront control algorithm is excessively long, which is a major factor affecting the ...
Shenghu Liu +7 more
doaj +1 more source
Microsaccades Tracking by Secondary Speckle Pattern Analysis
Journal of Biophotonics, EarlyView.A new approach for detecting microsaccades is introduced using secondary speckle patterns reflected from the sclera. This method offers potential benefits in capturing subtle eye movements and overcoming limitations in traditional pupil‐tracking systems.
Ola Shteinberg +6 more
wiley +1 more source
Detection of phase singularities with a Shack-Hartmann wavefront sensor [PDF]
, 2007 Mingzhou Chen +2 more
openalex +1 more source
Sensing Dog Brain Reactions to Smell by AI Speckle Pattern Analysis
Journal of Biophotonics, EarlyView.The setup of our experiment is shown on Labrador, Johny, a canine participant of our research. The schematic of the setup features: green laser, digital camera, source of smell, and computer. Regions of the brain that were tested are highlighted. Note that the hippocampus and amygdala are on both sides of the dog's brain.
Ilana Propp +5 more
wiley +1 more source
Depth‐enhanced light field camera system based on focus‐tunable geometric phase lens module
Journal of the Society for Information Display, EarlyView.We propose a GPL‐based LF camera that significantly extends the depth range over passive optics. During elemental image acquisition and LF rendering, chromatic aberration is compensated by adjusting reconstruction depth and magnification per color channel, with optimized GPL operations considering color‐dependent depth of focus.
Hyeon‐Su Jeong +8 more
wiley +1 more source
High‐resolution in vivo monophasic gastric slow waves to quantify activation and recovery profiles
Neurogastroenterology &Motility, Volume 34, Issue 12, December 2022., 2022 A novel high‐resolution multi‐channel suction electrode array was developed and applied in vivo to record monophasic gastric slow waves. Spatiotemporal slow wave recovery phase analysis was more reliably performed on monophasic signals compared with the biphasic signals, owing to the defined recovery morphology.
Henry Han +2 more
wiley +1 more source
Hyperspectral wavefront sensing with a multicore fiber [PDF]
arXivSingle-shot hyperspectral wavefront sensing is essential for applications like spatio-spectral coupling metrology in high power laser or fast material dispersion imaging. Under broadband illumination, traditional wavefront sensors assume an achromatic wavefront, which makes them unsuitable. We introduce a hyperspectral wavefront sensing scheme based on
arxiv
Disturbance Modelling for Minimum Variance Control in Adaptive Optics Systems Using Wavefront Sensor Sampled-Data. [PDF]
Sensors (Basel), 2021 Coronel M +3 more
europepmc +1 more source