Results 71 to 80 of about 37,700 (292)

Dualization and Automatic Distributed Parameter Selection of Total Generalized Variation via Bilevel Optimization

, 2020
Total Generalized Variation (TGV) regularization in image reconstruction relies on an infimal convolution type combination of generalized first- and second-order derivatives.
Papafitsoros, Kostas, Hintermueller, M, Sun, Hongpeng, Rautenberg, Carlos N., Hintermüller, Michael, Rautenberg, CN, Sun, H, Papafitsoros, K   +7 more
core   +1 more source

Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita, Lucas R. L. Norg, Patrick Diederen, Clint van Hoesel, Christ H. L. Weijtens, Peter A. Bobbert, Reinder Coehoorn   +6 more
wiley   +1 more source

Nonlocal Total Variation Using the First and Second Order Derivatives and Its Application to CT image Reconstruction

Sensors, 2020
We propose a new class of nonlocal Total Variation (TV), in which the first derivative and the second derivative are mixed. Since most existing TV considers only the first-order derivative, it suffers from problems such as staircase artifacts and loss in
Yongchae Kim, Hiroyuki Kudo
doaj   +1 more source

Multispectral and Hyperspectral Image Fusion Based on Regularized Coupled Non-Negative Block-Term Tensor Decomposition

Remote Sensing, 2022
The problem of multispectral and hyperspectral image fusion (MHF) is to reconstruct images by fusing the spatial information of multispectral images and the spectral information of hyperspectral images.
Hao Guo, Wenxing Bao, Kewen Qu, Xuan Ma, Meng Cao   +4 more
doaj   +1 more source

Remarks on the total variation of the Jacobian

, 2006
The total variation TV(u) of the Jacobian determinant of nonsmooth vector fields u has recently been studied in [2] [3]. We focus on the subclass u(x) = φ(x/|x|) of homogeneous extensions of smooth functions φ : ∂Bn → Rn.
MUCCI, Domenico
core   +1 more source

Unified Analytical Framework for Understanding the Operational Stability of Blue Phosphorescent OLEDs: Quantitative Insights Into Exciton Recycling and Bimolecular Interactions

Advanced Functional Materials, EarlyView.
Blue phosphorescent OLEDs remain limited by poor operational stability. Here, a unified analytical framework integrating transient photoluminescence and magneto‐electroluminescence is developed to correlate intrinsic material photophysics with electrically driven degradation.
Hakjun Lee, Bum June Park, Taekyung Kim
wiley   +1 more source

Total variation wavelet thresholding

, 2007
We propose using Partial Differential Equation (PDE) techniques in wavelet based image processing to remove noise and reduce edge artifacts generated by wavelet thresholding.
Zhou, Hao Min, Chan, Tony F.
core   +1 more source

Microgel‐Based 3D Bioprinting: A Convergent Strategy Integrating Material Design, Jamming Dynamics, and Biological Function

Advanced Healthcare Materials, EarlyView.
Microgel‐based 3D printed constructs represent a compelling and versatile innovation for engineering architecturally complex, dynamically remodelable, and biocompatible structures with high structural fidelity and bioactivity. By integrating material design, biofabrication, and biological function, these systems enable the development of adaptive ...
Elena Ghighină, Andreea Ioana Dinu, Jana Ghițman   +2 more
wiley   +1 more source

Impulse Noise Denoising Using Total Variation with Overlapping Group Sparsity and Lp-Pseudo-Norm Shrinkage

Applied Sciences, 2018
Models based on total variation (TV) regularization are proven to be effective in removing random noise. However, the serious staircase effect also exists in the denoised images.
Lingzhi Wang, Yingpin Chen, Fan Lin, Yuqun Chen, Fei Yu, Zongfu Cai   +5 more
doaj   +1 more source

Hierarchical Trellis Based Decoder for Total Variation Sequence Detection (TVSD) in Space-Time Trellis Coded (STTC) Wireless Image/Video Communication

IEEE Access, 2020
This paper proposes a robust reconstruction scheme for image/ video transmission in space-time trellis coding (STTC) based MIMO wireless multimedia sensor networks (WMSN).
Ankit Kudeshia, Mohd Abbas Zaidi, Aditya K. Jagannatham, Chandra Prakash   +3 more
doaj   +1 more source