Results 51 to 60 of about 75,296 (317)

A Design of Adaptive Quantizer for MPEG-2 Video Coding

open access: yesTongxin xuebao, 1995
Based upon studying the strategy for adaptive quantization suggested by MPEG-2 Test Model 5,a new quantizer is presented in this paper.Block-based visual activities are analyzed to exploit local perceptual characteristics in the macroblock.In order to ...
孙军, 张文军, 余松煜
doaj   +2 more sources

Segmented Spherical Projection-Based Blind Omnidirectional Image Quality Assessment

open access: yesIEEE Access, 2020
In contrast with traditional images, omnidirectional image (OI) has a higher resolution and provides the user with an interactive wide field of view.
Xuelei Zheng   +3 more
doaj   +1 more source

The Unreasonable Effectiveness of Deep Features as a Perceptual Metric

open access: yes, 2018
While it is nearly effortless for humans to quickly assess the perceptual similarity between two images, the underlying processes are thought to be quite complex.
Efros, Alexei A.   +4 more
core   +1 more source

Nanodiamond Quantum Sensors for Probing Free Radical Biology

open access: yesAdvanced Functional Materials, EarlyView.
Free radicals play key roles in cellular signaling and disease but remain difficult to measure in living systems. Nanodiamonds (NDs) with nitrogen‐vacancy (NV) centers enable quantum sensing of local magnetic noise via T₁ relaxometry, providing nondestructive radical detection in living cells.
Qi Lu, Yingke Wu, Tanja Weil
wiley   +1 more source

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

open access: yesAdvanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Perceptually Adaptive Lagrangian Multiplier for HEVC Guided Rate-Distortion Optimization

open access: yesIEEE Access, 2018
Recent video coding standards typically use the Rate-distortion optimization (RDO) method, which is essential to appropriately perform mode decisions during encoding process.
Kais Rouis   +2 more
doaj   +1 more source

Single image super-resolution via Image Quality Assessment-Guided Deep Learning Network.

open access: yesPLoS ONE, 2020
In recent years, deep learning (DL) networks have been widely used in super-resolution (SR) and exhibit improved performance. In this paper, an image quality assessment (IQA)-guided single image super-resolution (SISR) method is proposed in DL ...
Zhengqiang Xiong   +5 more
doaj   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

open access: yesAdvanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu   +5 more
wiley   +1 more source

Application of Perceptual Filtering Models to Noisy Speech Signals Enhancement

open access: yesJournal of Electrical and Computer Engineering, 2012
This paper describes a new speech enhancement approach using perceptually based noise reduction. The proposed approach is based on the application of two perceptual filtering models to noisy speech signals: the gammatone and the gammachirp filter banks ...
Novlene Zoghlami, Zied Lachiri
doaj   +1 more source

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

open access: yesAdvanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo   +2 more
wiley   +1 more source

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