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Hue-preserving image enhancement for the elderly based on wavelength-dependent gamma correction
Hue-preserving image enhancement for the elderly based on wavelength-dependent gamma correction
The purpose of this study is to apply digital image processing to original images acquired with common digital devices to ...
Hybrid network with difficult–easy learning for concealed object detection in imbalanced terahertz image dataset
Hybrid network with difficult–easy learning for concealed object detection in imbalanced terahertz image dataset
Terahertz imaging technology has been widely used in security inspections due to its ability to detect various concealed h...
Improvement in image gaps and viewing angle of space-saving compact aerial display
Improvement in image gaps and viewing angle of space-saving compact aerial display
Two technologies for improving image gaps and narrow viewing angle were applied to a space-saving compact aerial display w...
Improved ternary composite ceramic phosphors for warm-white laser lighting
Improved ternary composite ceramic phosphors for warm-white laser lighting
The large thermal conductivity of phosphor materials is crucial for laser lighting. Since the laser beam for pumping is fo...
Age-based effects of yellow lenses on discomfort glare from white LED headlights
Age-based effects of yellow lenses on discomfort glare from white LED headlights
This study aimed to explore the effectiveness of yellow glasses in reducing discomfort glare caused by white light-emittin...
Analysis of sensory tests for visibility of blur-added and color-changed virtual characters for AR display
Analysis of sensory tests for visibility of blur-added and color-changed virtual characters for AR display
We conducted sensory test for visibility of blur-added and color-changed virtual characters and analyzed it to investigate...
Mask-based lensless face recognition system with dual-prior face restoration
Mask-based lensless face recognition system with dual-prior face restoration
Face recognition, a biometric technology that analyzes facial features to authenticate individuals’ identities, has ...
Skew information and non-classical properties for semi squeezed states
Skew information and non-classical properties for semi squeezed states
A special type of semi non-classical states namely semi squeezed states is introduced. Some non-classical properties of th...
Effects of three wavelength-cut lenses on visual function in the photopic and mesopic conditions
Effects of three wavelength-cut lenses on visual function in the photopic and mesopic conditions
This study aimed to explore the impact of three wavelength-cut (TWC) lenses, which allowed 75% luminance transmittance whi...
Study on the diffraction light field of two special beams through a cylindrical lens
Study on the diffraction light field of two special beams through a cylindrical lens
Cylindrical lens is irreplaceable in the field of beam manipulation, which can generate new types of light field by diffra...
Ai-enabled efficient modulation classification in underwater OWC systems
Ai-enabled efficient modulation classification in underwater OWC systems
In this paper, we propose and experimentally demonstrate an artificial intelligence (AI)-enabled efficient modulation clas...
Imaging distance of an aquatic image formed by an aquatic display obtained by paraxial approximation
Imaging distance of an aquatic image formed by an aquatic display obtained by paraxial approximation
Aquatic display, which forms a floating image in water without a screen, used in behavioral experiments of aquatic organis...
Orthogonal polarization dual-wavelength Nd: GdVO4 laser at 1341 nm and 1344 nm with 880 nm LD direct pumping
Orthogonal polarization dual-wavelength Nd: GdVO4 laser at 1341 nm and 1344 nm with 880 nm LD direct pumping
We report an orthogonal polarization dual-wavelength Nd:GdVO4 crystal laser with 880 nm LD directly pumping. By a...
Design and analysis of parallel polarization-beam-splitter-based optical filter with adjustable channel spacing
Design and analysis of parallel polarization-beam-splitter-based optical filter with adjustable channel spacing
In this paper, a parallel polarization-beam-splitter-based fiber optic filter with adjustable channel spacing is proposed ...
Spatiotemporal-coupled partially coherent pulsed source and its propagation
Spatiotemporal-coupled partially coherent pulsed source and its propagation
We present a new partially coherent pulsed source with spatiotemporal coupling. The stochastic optical pulse, which we cal...
The shift–rotation absolute testing method based on autocollimation
The shift–rotation absolute testing method based on autocollimation
The shift–rotation method is an absolute testing method that has attracted much attention in recent years, and detec...
Research and correction for over-response phenomenon when using inorganic scintillator optical fiber X-ray sensor to measure off-axis ratio (OAR)
Research and correction for over-response phenomenon when using inorganic scintillator optical fiber X-ray sensor to measure off-axis ratio (OAR)
Optical fiber X-ray sensors have the potential to realize real-time dose monitoring of precision radiotherapy. However, an...
Research on the technology of realizing normal operation of medium-wave infrared camera in space by simulating a vacuum environment on the ground
Research on the technology of realizing normal operation of medium-wave infrared camera in space by simulating a vacuum environment on the ground
To enable the operation of a mid-wave infrared (MWIR) camera under vacuum and low-temperature conditions for space-based E...
Novel high light efficiency pancake optics for HMD named “double path”
Novel high light efficiency pancake optics for HMD named “double path”
The folded optics for HMD (head-mounted display), commonly referred to as pancake optics, is widely used to realize a comp...
Time synchronization method of wireless distributed sensor node and its application for real-time dust monitoring
Time synchronization method of wireless distributed sensor node and its application for real-time dust monitoring
In this study, we aim to conduct real-time sensing of indoor dust concentration distribution to mitigate the airborne tran...
Luminescence properties and temperature characteristics of Yb3+/Nd3+/Ho3+ triple doped BaGeTeO6 up-conversion phosphors under 980 nm excitation
Luminescence properties and temperature characteristics of Yb3+/Nd3+/Ho3+ triple doped BaGeTeO6 up-conversion phosphors under 980 nm excitation
BaGeTeO6: Nd3+/Yb3+/Ho3+ green up-conversion phosphors were synthesized using the high-temperature solid-state reaction me...
Ultrahigh efficiency and ultralow threshold energy all-optical switch based on state transition of defective waveguide networks
Ultrahigh efficiency and ultralow threshold energy all-optical switch based on state transition of defective waveguide networks
A novel design of ultrahigh efficiency and ultralow threshold energy all-optical switches based on local state transition ...
Study of Au nanoparticles adsorbed on InGaAs/InP thin films to improve optical absorption properties in the near-infrared band
Study of Au nanoparticles adsorbed on InGaAs/InP thin films to improve optical absorption properties in the near-infrared band
In this paper, we use FDTD Solutions software to construct the light-absorption model of InGaAs/InP thin films modified by...
Designed edge-lit NIR planar marker for orthopedic surgical locators
Designed edge-lit NIR planar marker for orthopedic surgical locators
Orthopedic surgical robots utilize near-infrared (NIR) optical locators to enable precise navigation during operations. Ma...
Application of low-birefringence polystyrene in high-resolution imaging-lens systems
Application of low-birefringence polystyrene in high-resolution imaging-lens systems
Polystyrene (PS) has not been much used as an optical material due to the considerably high birefringence of PS. For the e...
Parallel detection structure exploiting the extrinsic information from the serial detection in the holographic data storage system
Parallel detection structure exploiting the extrinsic information from the serial detection in the holographic data storage system
The major concern in signal processing for holographic data storage (HDS) systems is the two-dimensional (2D) inter-symbol...
Optical configurations for applying antireflective nanotexture on spherical lenses by ultrashort laser structuring
Optical configurations for applying antireflective nanotexture on spherical lenses by ultrashort laser structuring
This paper focuses on minimizing the optical reflection on spherical fused silica lenses using femtosecond (fs) laser nano...
Design of long focal length terahertz optical system
Design of long focal length terahertz optical system
Terahertz imaging has significant development prospects in terahertz technology due to its strong penetration and high spa...
Miniature wide angle optical system with freeform lens
Miniature wide angle optical system with freeform lens
Miniature camera modules are widely used in mobile electronic devices such as mobile phones, personal digital assistants o...
Simulating the Appearance of Aerial Images formed by Aerial Imaging by Retroreflection
Simulating the Appearance of Aerial Images formed by Aerial Imaging by Retroreflection
Ray tracing, combined with ideal retroreflection and mathematical simulation methods, has been used to design aerial imagi...
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