Results 71 to 80 of about 153,403 (304)

Inverse Design of Mirror‐Symmetric Disordered Systems for Broadband Perfect Transmission

Laser &Photonics Reviews, EarlyView.
This work introduces an inverse design approach to achieve broadband perfect wave transmission in mirror‐symmetric disordered media. Leveraging symmetry simplifies optimization and enables control of multiple reflectionless states. Experiments in microwave waveguides confirm the design of exceptional points, bandpass filters, and broadband quasi ...
Zhazira Zhumabay, Clément Ferise, Vincent Pagneux, Stefan Rotter, Matthieu Davy   +4 more
wiley   +1 more source

Child labour: the case study in Bangladesh [PDF]

, 2020
Child labour involves of person that age below than 17 years old. Child labour often happen in poor countries such as Bangladesh. In Bangladesh, the issue of child labour might be the biggest issue.
Ali Hassan Humaid Alhosani, Adnan, Ismail, Fadillah, Maulad Bahrol, Khadijah   +2 more
core  

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source

Watermark Compression in Digital Medical Image Watermarking [PDF]

, 2013
Large size data not only require more storage space but also require more transmission time in communication environment. Mostly this obstacle exists in every type image communication process such as in satellite and distributed health facilities ...
Badshah, Gran, Jasni, Mohamad Zain, Liew, Siau-Chuin, Syifak Izhar, Hisham   +3 more
core  

Edge-Based and Prediction-Based Transformations for Lossless Image Compression

Journal of Imaging, 2018
Pixelated images are used to transmit data between computing devices that have cameras and screens. Significant compression of pixelated images has been achieved by an “edge-based transformation and entropy coding” (ETEC) algorithm recently proposed by ...
Md. Ahasan Kabir, Md. Rubaiyat H. Mondal
semanticscholar   +1 more source

Highly Versatile Real‐Time Optical Noise Filtering Through Temporal Cloaking

Laser &Photonics Reviews, EarlyView.
Conventional bandpass filtering strategies may be insufficient for recovering optical waveforms under extremely noisy conditions. We demonstrate a temporal‐cloaking denoising strategy enabled by the temporal Talbot effect, which concentrates the coherent signal of interest into short temporal slots while broadband noise remains temporally spread.
Majid Goodarzi, Manuel P. Fernandez, Geunweon Lim, Connor Rowe, Xinyi Zhu, José Azaña   +5 more
wiley   +1 more source

JPEG and BPG visually lossless image compression via KonJND-1k database

Vojnotehnički Glasnik
Introduction/purpose: This paper presents the results of the research on visually lossless image compression which is of particular interest because it achieves a high degree of compression, while the visual quality of the image is not impaired, i.e ...
Boban P. Bondžulić, Nenad M. Stojanović, Vladimir V. Lukin, Sergii S. Kryvenko   +3 more
doaj   +1 more source

Performance Evaluation of Data Compression Systems Applied to Satellite Imagery

Journal of Electrical and Computer Engineering, 2012
Onboard image compression systems reduce the data storage and downlink bandwidth requirements in space missions. This paper presents an overview and evaluation of some compression algorithms suitable for remote sensing applications.
Lilian N. Faria, Leila M. G. Fonseca, Max H. M. Costa   +2 more
doaj   +1 more source

512‐Fold Rotational Super‐Resolution via Four‐Photon High‐Dimensional Structured Light

Laser &Photonics Reviews, EarlyView.
A quantum rotation sensor that combines four photon states and high dimensional structured light ‐ characterized by a topological charge of 128 ‐ demonstrates a 512‐fold angular super‐resolution. ABSTRACT Structured light enhances quantum information processing by combining quantum states of light and shaped wavefronts.
Guy Tshuva, Ofir Yesharim, Hagai S. Eisenberg, Ady Arie   +3 more
wiley   +1 more source

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, EarlyView.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source