no code implementations • 19 Nov 2024 • Xiao Jiang, Fei Zhou, Jiongzhi Lin
We incorporate the analogue properties of event camera pixel circuits into the simulator design: (1) analogue filtering of signals from light intensity to events, and (2) a cutoff frequency that is independent of video frame rate.
no code implementations • 3 Nov 2024 • Fei Zhou, Peng Wang, Lei Zhang, Zhenghua Chen, Wei Wei, Chen Ding, Guosheng Lin, Yanning Zhang
Meta-learning offers a promising avenue for few-shot learning (FSL), enabling models to glean a generalizable feature embedding through episodic training on synthetic FSL tasks in a source domain.
no code implementations • 28 Aug 2024 • Bo Lei, Enze Chen, Hyuna Kwon, Tim Hsu, Babak Sadigh, Vincenzo Lordi, Timofey Frolov, Fei Zhou
The diffusion model has emerged as a powerful tool for generating atomic structures for materials science.
1 code implementation • 22 Jul 2024 • Fei Zhou, Maixia Fu, Yulei Qian, Jian Yang, Yimian Dai
Infrared small target detection is crucial for the efficacy of infrared search and tracking systems.
no code implementations • 16 Jun 2024 • Cuixin Yang, Rongkang Dong, Jun Xiao, Cong Zhang, Kin-Man Lam, Fei Zhou, Guoping Qiu
As virtual and augmented reality applications gain popularity, omnidirectional image (ODI) super-resolution has become increasingly important.
no code implementations • 14 Jun 2024 • Fei Zhou, Tianhao Gu, Zhicong Huang, Guoping Qiu
The Text Annotated Distortion, Appearance and Content (TADAC) database has over 1. 6 million images annotated with textual descriptions of their semantic contents, distortion characteristics and appearance properties.
no code implementations • 27 Apr 2024 • Xiao Jiang, Fei Zhou
Dynamic Vision Sensors (DVS) have recently generated great interest because of the advantages of wide dynamic range and low latency compared with conventional frame-based cameras.
1 code implementation • 18 Apr 2024 • Daniel Schwalbe-Koda, Sebastien Hamel, Babak Sadigh, Fei Zhou, Vincenzo Lordi
This method provides a general tool for data-driven atomistic modeling and combines efforts in ML, simulations, and physical explainability.
1 code implementation • 1 Feb 2024 • Joshua A. Vita, Amit Samanta, Fei Zhou, Vincenzo Lordi
Model ensembles are effective tools for estimating prediction uncertainty in deep learning atomistic force fields.
1 code implementation • 9 Dec 2023 • Hyuna Kwon, Tim Hsu, Wenyu Sun, Wonseok Jeong, Fikret Aydin, James Chapman, Xiao Chen, Matthew R. Carbone, Deyu Lu, Fei Zhou, Tuan Anh Pham
In this work, we introduce a new framework based on the diffusion model, a recent generative machine learning method to predict 3D structures of disordered materials from a target property.
no code implementations • 29 Nov 2023 • Manal Helal, Fanrong Kong, Sharon C-A Chen, Fei Zhou, Dominic E Dwyer, John Potter, Vitali Sintchenko
The combination of MSA with the linear mapping hash function is a computationally efficient way of gene sequence clustering and can be a valuable tool for the assessment of similarity, clustering of different microbial genomes, identifying reference sequences, and for the study of evolution of bacteria and viruses.
1 code implementation • 2 Oct 2023 • Tim Hsu, Babak Sadigh, Vasily Bulatov, Fei Zhou
Our current SD implementation is about two orders of magnitude faster than the MD counterpart for the systems studied in this work.
no code implementations • 25 Sep 2023 • Nicolas Bertin, Vasily V. Bulatov, Fei Zhou
The computational method of discrete dislocation dynamics (DDD), used as a coarse-grained model of true atomistic dynamics of lattice dislocations, has become of powerful tool to study metal plasticity arising from the collective behavior of dislocations.
1 code implementation • 20 Sep 2023 • Xingting Yao, Qinghao Hu, Fei Zhou, Tielong Liu, Zitao Mo, Zeyu Zhu, Zhengyang Zhuge, Jian Cheng
In SpikingNeRF, each sampled point on the ray is matched to a particular time step and represented in a hybrid manner where the voxel grids are maintained as well.
1 code implementation • 24 May 2023 • Zehong Zhou, Fei Zhou, Guoping Qiu
Blind image quality assessment (BIQA) is a challenging problem with important real-world applications.
1 code implementation • CVPR 2023 • Fei Zhou, Peng Wang, Lei Zhang, Wei Wei, Yanning Zhang
Prototypical Network is a popular few-shot solver that aims at establishing a feature metric generalizable to novel few-shot classification (FSC) tasks using deep neural networks.
2 code implementations • 16 Dec 2022 • Yimian Dai, Xiang Li, Fei Zhou, Yulei Qian, Yaohong Chen, Jian Yang
Finally, we present a new research benchmark for infrared small target detection, consisting of the SIRST-V2 dataset of real-world, high-resolution single-frame targets, the normalized contrast evaluation metric, and the DeepInfrared toolkit for detection.
1 code implementation • 5 Dec 2022 • Tim Hsu, Babak Sadigh, Nicolas Bertin, Cheol Woo Park, James Chapman, Vasily Bulatov, Fei Zhou
We propose an effective method for removing thermal vibrations that complicate the task of analyzing complex dynamics in atomistic simulation of condensed matter.
1 code implementation • 25 Nov 2022 • Zhipeng Zhong, Fei Zhou, Guoping Qiu
Based on the observation that most textual comments of an image are about objects and their interactions rather than aspects of aesthetics, we first introduce the concept of Aesthetic Relevance Score (ARS) of a sentence and have developed a model to automatically label a sentence with its ARS.
no code implementations • 8 Nov 2022 • Lingkai Zhu, Fei Zhou, Bozhi Liu, Orcun Göksel
A major challenge for high dynamic range (HDR) image reconstruction from multi-exposed low dynamic range (LDR) images, especially with dynamic scenes, is the extraction and merging of relevant contextual features in order to suppress any ghosting and blurring artifacts from moving objects.
1 code implementation • 18 Aug 2022 • Hongming Luo, Fei Zhou, Kin-Man Lam, Guoping Qiu
This paper presents a new general video restoration framework for the restoration of user videos shared on social media platforms.
no code implementations • 5 Aug 2022 • Nicolas Bertin, Fei Zhou
Discrete dislocation dynamics (DDD) is a widely employed computational method to study plasticity at the mesoscale that connects the motion of dislocation lines to the macroscopic response of crystalline materials.
1 code implementation • 11 Oct 2021 • Fei Zhou, Xin Sun, Junyu Dong, Haoran Zhao, Xiao Xiang Zhu
Although Convolution Neural Networks (CNNs) has made substantial progress in the low-light image enhancement task, one critical problem of CNNs is the paradox of model complexity and performance.
1 code implementation • 2 Mar 2021 • Hongming Luo, Fei Zhou, Guangsen Liao, Guoping Qiu
Based on a mathematical inference model for estimating a clean low-resolution (LR) image and a clean high-resolution (HR) image from a down-sampled and compressed observation, we have designed a CISR architecture consisting of two deep neural network modules: the artefacts removal module (ARM) and the resolution enhancement module (REM).
no code implementations • 7 Jan 2021 • Hongming Luo, Guangsen Liao, Xianxu Hou, Bozhi Liu, Fei Zhou, Guoping Qiu
In this paper, we focus on the problem of translating VHS video to HDTV video and have developed a solution based on a novel unsupervised multi-task adversarial learning model.
2 code implementations • 15 Dec 2020 • Yimian Dai, Yiquan Wu, Fei Zhou, Kobus Barnard
To mitigate the issue of minimal intrinsic features for pure data-driven methods, in this paper, we propose a novel model-driven deep network for infrared small target detection, which combines discriminative networks and conventional model-driven methods to make use of both labeled data and the domain knowledge.
no code implementations • 3 Dec 2020 • Lei Zhang, Fei Zhou, Wei Wei, Yanning Zhang
To mitigate this problem, we present a novel deep metric meta-generation method that turns to an orthogonal direction, ie, learning to adaptively generate a specific metric for a new FSL task based on the task description (eg, a few labelled samples).
1 code implementation • 5 Nov 2020 • Kanglin Liu, Gaofeng Cao, Fei Zhou, Bozhi Liu, Jiang Duan, Guoping Qiu
In this paper, we present a new technique termed Structure-Texture Independent Architecture with Weight Decomposition and Orthogonal Regularization (STIA-WO) to disentangle the latent space for unsupervised semantic face editing.
5 code implementations • 30 Sep 2020 • Yimian Dai, Yiquan Wu, Fei Zhou, Kobus Barnard
Single-frame infrared small target detection remains a challenge not only due to the scarcity of intrinsic target characteristics but also because of lacking a public dataset.
no code implementations • 16 Jan 2020 • Fan Yang, Shao-Jian Jiang, Fei Zhou
When strong quantum fluctuations near resonance are taken into account, the line of continuous phase transitions terminates at two multicritical points near resonance, between which the transitions are expected to be first-order ones.
Quantum Gases
2 code implementations • ICCV 2019 • Kanglin Liu, Wenming Tang, Fei Zhou, Guoping Qiu
Theoretical analysis shows that the optimal solution to the discriminator has a strong relationship to the spectral distributions of the weight matrix. Therefore, we monitor the spectral distribution in the discriminator of spectral normalized GANs (SN-GANs), and discover a phenomenon which we refer to as spectral collapse, where a large number of singular values of the weight matrices drop dramatically when mode collapse occurs.
3 code implementations • 3 Jun 2019 • Jie Ren, Fei Zhou, Xiaoxi Li, Qi Chen, Hongmei Zhang, Shuangge Ma, Yu Jiang, Cen Wu
Existing Bayesian methods for G$\times$E interaction studies are challenged by the high-dimensional nature of the study and the complexity of environmental influences.
Methodology
1 code implementation • 22 May 2018 • Fei Zhou, Weston Nielson, Yi Xia, Vidvuds Ozolins
{\it Ab initio\/} calculations have been successfully used for evaluating lattice dynamical properties of solids within the (quasi-)harmonic approximation (i. e., assuming non-interacting phonons with infinite lifetimes), but it remains difficult to treat anharmonicity in all but the simplest compounds.
Computational Physics Materials Science
1 code implementation • 22 May 2018 • Fei Zhou, Babak Sadigh, Daniel Aberg, Yi Xia, Vidvuds Ozolins
We apply the compressive sensing lattice dynamics (CSLD) method to calculate phonon dispersion for crystalline solids.
Materials Science