Results 31 to 40 of about 586,449 (202)
Automated Optical Flow Based Registration for Adaptive Optics Scanning Laser Ophthalmoscope
IEEE Photonics Journal, 2020 This study presents an automated registration method based on optical flow for an adaptive optics scanning laser ophthalmoscope. The method was designed to align and average images to obtain a higher signal-to-noise ratio image.
Yiwei Chen +6 more
doaj +1 more source
Remote Sensing, 2023 Pixel Offset Tracking (POT) for optical imagery is a widely used method for extracting large-scale ground deformation. However, the influence of imaging parameters on the measurement accuracy of POT is still unclear.
Xiaowen Wang +3 more
doaj +1 more source
International Journal of Electrochemical Science, 2012 The use of digital image correlation for optical monitoring of corrosion processes occurring in a metallic sample is here proposed. The formation and reduction of corrosion products (oxides) over the surface of an old copper coin immersed in an ...
Jose Antonio Marbán Salgado +2 more
doaj +1 more source
Journal of Open Research Software, 2021 This paper describes OpenOpticalFlow_PIV, an open source Matlab program integrating the optical flow method with the cross-correlation method for extraction of high-resolution velocity fields from particle images with large displacements.
Tianshu Liu, David M. Salazar
doaj +1 more source
Intensity interferometry with more than two detectors? [PDF]
, 2013 The original intensity interferometers were instruments built in the 1950s and 60s by Hanbury Brown and collaborators, achieving milli-arcsec resolutions in visible light without optical-quality mirrors.
Malvimat, Vinay +2 more
core +1 more source
, 2011 We present an indirect imaging method that measures both amplitude and phase information from a transmissive target. Our method is based on an optical eigenmode decomposition of the light intensity and the first-order cross correlation between a target ...
De Luca, Anna Chiara +3 more
core +1 more source
Correlative infrared optical coherence tomography and hyperspectral chemical imaging [PDF]
Journal of the Optical Society of America A, 2020 Optical coherence tomography (OCT) is a high-resolution three-dimensional imaging technique that enables nondestructive measurements of surface and subsurface microstructures. Recent developments of OCT operating in the mid-infrared (MIR) range (around 4 µm) lifted fundamental scattering limitations and initiated applied material research in formerly ...
Zorin, Ivan +4 more
openaire +3 more sources
Accurate 3D Shape, Displacement and Deformation Measurement Using a Smartphone
Sensors, 2019 The stereo-digital image correlation technique using two synchronized industrial-grade cameras has been extensively used for full-field 3D shape, displacement and deformation measurements.
Liping Yu, Ran Tao, Gilles Lubineau
doaj +1 more source
Label-free single-particle imaging of the influenza virus by objective-type total internal reflection dark-field microscopy. [PDF]
PLoS ONE, 2012 Here we report label-free optical imaging of single particles of the influenza virus attached on a glass surface with a simple objective-type total internal reflection dark-field microscopy (TIRDFM).
Sawako Enoki +6 more
doaj +1 more source
Accuracy assessment of moderate resolution image spectroradiometer products for dust storms in semiarid environment. [PDF]
, 2011 Dust storms are strongly and negatively associated with the annual cycle of rainfall and coincide with the west and southwesterly winds in west and south west of Iran.
Abdullah, Ahmad Makmom +3 more
core +2 more sources