Search Results for author: Hongwei Yong

Found 16 papers, 9 papers with code

Momentum Batch Normalization for Deep Learning with Small Batch Size

no code implementations ECCV 2020 Hongwei Yong, Jianqiang Huang, Deyu Meng, Xian-Sheng Hua, Lei Zhang

To make a deeper understanding of BN, in this work we prove that BN actually introduces a certain level of noise into the sample mean and variance during the training process, while the noise level depends only on the batch size.

SGD with Partial Hessian for Deep Neural Networks Optimization

1 code implementation5 Mar 2024 Ying Sun, Hongwei Yong, Lei Zhang

Compared with first-order optimizers, it adopts a certain amount of information from the Hessian matrix to assist optimization, while compared with the existing second-order optimizers, it keeps the good generalization performance of first-order optimizers.

Image Classification Second-order methods

Improving the Stability of Diffusion Models for Content Consistent Super-Resolution

1 code implementation30 Dec 2023 Lingchen Sun, Rongyuan Wu, Zhengqiang Zhang, Hongwei Yong, Lei Zhang

To improve the stability of diffusion prior-based SR, we propose to employ the diffusion models to refine image structures, while employing the generative adversarial training to enhance image fine details.

Image Super-Resolution Text-to-Image Generation

Perception-Distortion Balanced Super-Resolution: A Multi-Objective Optimization Perspective

1 code implementation24 Dec 2023 Lingchen Sun, Jie Liang, Shuaizheng Liu, Hongwei Yong, Lei Zhang

High perceptual quality and low distortion degree are two important goals in image restoration tasks such as super-resolution (SR).

Image Restoration Super-Resolution

Spatial-Frequency Attention for Image Denoising

no code implementations27 Feb 2023 Shi Guo, Hongwei Yong, Xindong Zhang, jianqi ma, Lei Zhang

In this paper, we propose the spatial-frequency attention network (SFANet) to enhance the network's ability in exploiting long-range dependency.

Image Denoising

A General Regret Bound of Preconditioned Gradient Method for DNN Training

1 code implementation CVPR 2023 Hongwei Yong, Ying Sun, Lei Zhang

Though the full-matrix preconditioned gradient methods theoretically have a lower regret bound, they are impractical for use to train DNNs because of the high complexity.

Image Classification object-detection +1

Unfolded Deep Kernel Estimation for Blind Image Super-resolution

1 code implementation10 Mar 2022 Hongyi Zheng, Hongwei Yong, Lei Zhang

Nonetheless, the existing deep unfolding methods cannot explicitly solve the data term of the unfolding objective function, limiting their capability in blur kernel estimation.

Image Super-Resolution

Deep Convolutional Dictionary Learning for Image Denoising

1 code implementation CVPR 2021 Hongyi Zheng, Hongwei Yong, Lei Zhang

Inspired by the great success of deep neural networks (DNNs), many unfolding methods have been proposed to integrate traditional image modeling techniques, such as dictionary learning (DicL) and sparse coding, into DNNs for image restoration.

Dictionary Learning Image Denoising +2

Gradient Centralization: A New Optimization Technique for Deep Neural Networks

7 code implementations ECCV 2020 Hongwei Yong, Jianqiang Huang, Xian-Sheng Hua, Lei Zhang

It has been shown that using the first and second order statistics (e. g., mean and variance) to perform Z-score standardization on network activations or weight vectors, such as batch normalization (BN) and weight standardization (WS), can improve the training performance.

Fine-Grained Image Classification General Classification

Variational Denoising Network: Toward Blind Noise Modeling and Removal

2 code implementations NeurIPS 2019 Zongsheng Yue, Hongwei Yong, Qian Zhao, Lei Zhang, Deyu Meng

On one hand, as other data-driven deep learning methods, our method, namely variational denoising network (VDN), can perform denoising efficiently due to its explicit form of posterior expression.

Image Denoising Noise Estimation +1

Toward Real-World Single Image Super-Resolution: A New Benchmark and A New Model

no code implementations ICCV 2019 Jianrui Cai, Hui Zeng, Hongwei Yong, Zisheng Cao, Lei Zhang

Most of the existing learning-based single image superresolution (SISR) methods are trained and evaluated on simulated datasets, where the low-resolution (LR) images are generated by applying a simple and uniform degradation (i. e., bicubic downsampling) to their high-resolution (HR) counterparts.

Image Registration Image Super-Resolution

Model Inconsistent but Correlated Noise: Multi-view Subspace Learning with Regularized Mixture of Gaussians

no code implementations7 Nov 2018 Hongwei Yong, Deyu Meng, Jinxing Li, WangMeng Zuo, Lei Zhang

Different from single view case, MSL should take both common and specific knowledge among different views into consideration.

Sharp Attention Network via Adaptive Sampling for Person Re-identification

no code implementations7 May 2018 Chen Shen, Guo-Jun Qi, Rongxin Jiang, Zhongming Jin, Hongwei Yong, Yaowu Chen, Xian-Sheng Hua

In this paper, we present novel sharp attention networks by adaptively sampling feature maps from convolutional neural networks (CNNs) for person re-identification (re-ID) problem.

Person Re-Identification

Robust Online Matrix Factorization for Dynamic Background Subtraction

no code implementations28 May 2017 Hongwei Yong, Deyu Meng, WangMeng Zuo, Lei Zhang

We propose an effective online background subtraction method, which can be robustly applied to practical videos that have variations in both foreground and background.

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