Results 71 to 80 of about 15,911 (261)
Miner video tracking and identification using optical camera communications in a wireless multimedia sensor network [PDF]
, 2020 International audienceFollowing several underground mine disasters, the U.S. government changed its safety policies for underground mines. These new regulations state mandatory wireless communications and tracking of personnel.
Azurdia-Meza, Cesar +5 more
core
Optical camera communication for active marker identification in camera-based positioning systems [PDF]
, 2022 S.93-98Outside-in camera-based localization systems determine the position of mobile objects (with markers attached to them) by observing a tracking area with multiple camera anchors.
Mutschler, C. +3 more
core +1 more source
Optical Manipulation of Whispering Gallery Mode Microlasers for Controlled Cellular Delivery
Advanced Optical Materials, EarlyView.Optically trapped whispering‑gallery microlasers are precisely positioned onto non‐phagocytic mammalian cells to report local refractive‑index changes in real time. Time‑dependent wavelength shifts reveal successive stages from membrane contact to internalization.
Soraya Caixeiro +3 more
wiley +1 more source
Design and Implementation of the MIMO–COOK Scheme Using an Image Sensor for Long-Range Communication
Sensors, 2020 Radio-frequency technologies are widely applied in many fields such as mobile systems, healthcare systems, television and radio broadcasting, and satellite communications. However, one major problem in wireless communication based on radio frequencies is
Van Hoa Nguyen +3 more
doaj +1 more source
International Journal of Extreme Manufacturing, 2023 Complex-shaped optical lenses are of great interest in the areas of laser processing, machine vision, and optical communications. Traditionally, the processing of complex optical lenses is usually achieved by precision machining combined with post ...
Shuai Peng +6 more
doaj +1 more source
Development of a Full-Field Time-of-Flight Range Imaging System [PDF]
, 2008 A full-field, time-of-flight, image ranging system or 3D camera has been developed from a proof-of-principle to a working prototype stage, capable of determining the intensity and range for every pixel in a scene.
Payne, Andrew D.
core
Advanced Robotics Research, EarlyView.Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley +1 more source
Scientific Reports, 2023 Fresnel zone plates (FZPs) are widely used in integrated optical systems to meet new cutting-edge demands for photonic integration and device miniaturizing. However, their use in applications of cross-scale fabrication still faces several obstacles, such
Pravinraj Selvaraj +4 more
doaj +1 more source
Optical Multispectral Camera Communications Using LED Spectral Emission Variations [PDF]
, 2021 This work proposes using the changes in the LEDs' spectral emission induced by temperature variations to implement emitters for new communication channels in Optical Camera Communication (OCC) systems.
Guerra, Víctor +4 more
core +1 more source
Waveguide Photoactuators: Materials, Fabrication, and Applications
Advanced Robotics Research, EarlyView.Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi +4 more
wiley +1 more source