Results 51 to 60 of about 6,104,454 (322)
Medium-Wave Infrared Static Fourier Transform Spectrometer Based on Micro-Optical Elements
IEEE Access, 2021 In recent years, various fields have established an urgent need for real-time online measurement of infrared spectra. To this end, reducing the weight and size of infrared spectrometers is particularly important.
Yupeng Chen +6 more
doaj +1 more source
An Improved Wavelet Modulus Algorithm Based on Fusion of Light Intensity and Degree of Polarization
Applied Sciences, 2022 Edge detection is the basis of image analysis and image processing. The wavelet modulus maxima algorithm is a widely used edge-detection algorithm. The algorithm has the advantages of strong anti-noise ability and high precision of edge location, but it ...
Yunting Gu +9 more
doaj +1 more source
A Noise Removal Algorithm Based on OPTICS for Photon-Counting LiDAR Data
IEEE Geoscience and Remote Sensing Letters, 2020 Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) shows great potential for forest height retrieval. However, there are abundant noise photons in the ICESat-2 data, which make the accurate extraction of global forest heights challenging.
Xiaoxiao Zhu +6 more
semanticscholar +1 more source
Design for quality: reconfigurable flat optics based on active metasurfaces
Nanophotonics, 2020 Optical metasurfaces, planar subwavelength nanoantenna arrays with the singular ability to sculpt wavefront in almost arbitrary manners, are poised to become a powerful tool enabling compact and high-performance optics with novel functionalities.
M. Shalaginov +13 more
semanticscholar +1 more source
Fast 3D Shape Measurement of Transparent Glasses by Sequential Thermal Fringe Projection [PDF]
EPJ Web of Conferences, 2020 We present an approach for measuring the shape of transparent glasses, which enables us to significantly reduce the comparatively long measurement time while increasing the measurement accuracy.
Landmann Martin +5 more
doaj +1 more source
Surface characterization in fabrication environments using angle resolved light scattering: From roughness and defect analysis to in-situ coating inspection [PDF]
EPJ Web of ConferencesThe performance of an optical component or surface might quicky be limited by light scattering induced by the surface and coating roughness, as well as imperfections and contaminations. On the other hand, the scattered light contains valuable information
Munser Anne-Sophie +4 more
doaj +1 more source
Joint Dense 3D Reconstruction Method for Endoscopic Images of Weak Texture Scenes
IEEE Access, 2021 Endoscopic inspection is an important non-destructive testing method. Traditional 3D endoscopic reconstruction methods, such as polarization reconstruction and shading reconstruction, have the drawbacks of not determining the object’s actual size ...
Yunting Gu +8 more
doaj +1 more source
FEBS Letters, EarlyView.Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke +2 more
wiley +1 more source
FEBS Letters, EarlyView.UDP‐glucuronic acid 4‐epimerase (UGAepi) catalyzes NAD+‐dependent interconversion of UDP‐glucuronic acid (UDP‐GlcA) and UDP‐galacturonic acid (UDP‐GalA) via C4‐oxidation, 4‐keto‐intermediate rotation, and C4‐reduction. Here, Borg et al. examined the role of the substrate's carboxylate group in the enzymic mechanism by analyzing NADH‐dependent reduction
Annika J. E. Borg +2 more
wiley +1 more source