Results 141 to 150 of about 519,436 (318)
Heart Rate Detection using Video Magnification: Impact of Algorithmic Parameters and Noise
, 2022 Leen Yassin Kassab
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Analog FM/FM versus digital color TV transmission aboard space station [PDF]
Langley Research Center is developing an integrated fault tolerant network to support data, voice, and video communications aboard Space Station. The question of transmitting the video data via dedicated analog channels or converting it to the digital ...
Hart, M. M.
core +1 more source
Tunable‐Wavelength Broadband Liquid‐State Carbon‐Quantum‐Dot Lasers
Advanced Optical Materials, EarlyView.This work provides a gain‐induced waveguide structure to achieve programmable mode spacing by coupling liquid‐state lasing of carbon quantum dots to a vertically placed aluminum mirror, enabling an unprecedented transition from random lasing to multimode lasing without cumbersome micromanufacturing, even single‐mode lasing at a wide range from 641 to ...
Xuezhe Dong +9 more
wiley +1 more source
NegVSR: Augmenting Negatives for Generalized Noise Modeling in Real-World Video Super-Resolution
, 2023 Yexing Song +5 more
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Magnetic Steganography Based on Wide‐Field Diamond Quantum Microscopy
Advanced Optical Materials, EarlyView.This document illustrates magnetic steganography. Magnetic graphics, including pixel art and QR codes, are produced using magnetic materials (such as Ni) and obscure behind patterns manufactured using non‐magnetic materials (such as Au), which are unveiled through widefield quantum microscopy. Furthermore, manipulating the electron spin of NV with dual
Jungbae Yoon +7 more
wiley +1 more source
Noise-shaped PCM for video processing and transmission
Electronics Letters, 1991 An easily implementable method is developed to convert conventional K-bit PCM into L-bit PCM (L < K) with a rising spectral noise profile to acquire a substantial word size/bit rate reduction for digitising video signals. It does not require additional oversampling and offers sub-band coding features.
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Incoherent Digital Holography Empowered by Wavefront and Information Engineering: A Review
Advanced Photonics Research, EarlyView.Advancements in incoherent digital holography (IDH) have been achieved via wavefront engineering (using spatial light modulators, diffractive optics, and metasurfaces) and information engineering (using compressive sensing and deep learning). This paper presents an overview of IDH with wavefront and information engineering, paving the way toward its ...
Teruyoshi Nobukawa
wiley +1 more source
Poka: A Necro‐Robot Beetle with a Measured Payload Ratio of 6847%
Advanced Robotics Research, EarlyView.Here, Poka, a necro‐robot beetle with the ability to carry more than 68 times its own weight, is introduced, making it also a walking robot with the highest payload ratio measured to date. This paper is concerned with the design, manufacture and validation of ‘Poka', a novel millimetre‐scale necro‐robot aimed at bridging the performance gap between ...
Yordan Tsvetkov, Parvez Alam
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A Quadruped Piezoelectric Ultrasonic Actuating Robot with Foot‐Leg‐Trunk‐Integrated Structure
Advanced Robotics Research, EarlyView.This study proposes a novel foot‐leg‐trunk‐integrated quadruped piezoelectric ultrasonic actuating robot with small size and lightweight. A hybrid vibration mode combining the first‐order out‐of‐plane bending vibration of the trunk and the first‐order horizontal bending vibration of driving legs is designed to generate elliptical trajectories at foot ...
Jie Deng +5 more
wiley +1 more source