Search Results for author: Junmin Liu

Found 14 papers, 7 papers with code

Stabilizing Sharpness-aware Minimization Through A Simple Renormalization Strategy

no code implementations14 Jan 2024 Chengli Tan, Jiangshe Zhang, Junmin Liu, Yicheng Wang, Yunda Hao

Recently, sharpness-aware minimization (SAM) has attracted a lot of attention because of its surprising effectiveness in improving generalization performance. However, training neural networks with SAM can be highly unstable since the loss does not decrease along the direction of the exact gradient at the current point, but instead follows the direction of a surrogate gradient evaluated at another point nearby.

Learning Theory

Trajectory-dependent Generalization Bounds for Deep Neural Networks via Fractional Brownian Motion

1 code implementation9 Jun 2022 Chengli Tan, Jiangshe Zhang, Junmin Liu

In this study, we argue that the hypothesis set SGD explores is trajectory-dependent and thus may provide a tighter bound over its Rademacher complexity.

Generalization Bounds

Understanding Short-Range Memory Effects in Deep Neural Networks

1 code implementation5 May 2021 Chengli Tan, Jiangshe Zhang, Junmin Liu

Instead, inspired by the short-range correlation emerging in the SGN series, we propose that SGD can be viewed as a discretization of an SDE driven by fractional Brownian motion (FBM).

Deep Gradient Projection Networks for Pan-sharpening

1 code implementation CVPR 2021 Shuang Xu, Jiangshe Zhang, Zixiang Zhao, Kai Sun, Junmin Liu, Chunxia Zhang

Specifically, two optimization problems regularized by the deep prior are formulated, and they are separately responsible for the generative models for panchromatic images and low resolution multispectral images.

Domain Adaptive Object Detection via Feature Separation and Alignment

no code implementations16 Dec 2020 Chengyang Liang, Zixiang Zhao, Junmin Liu, Jiangshe Zhang

Notably, scale-space filtering is exploited to implement adaptive searching for regions to be aligned, and instance-level features in each region are refined to reduce redundancy and noise mentioned in the second issue.

object-detection Object Detection

MFIF-GAN: A New Generative Adversarial Network for Multi-Focus Image Fusion

no code implementations21 Sep 2020 Yicheng Wang, Shuang Xu, Junmin Liu, Zixiang Zhao, Chun-Xia Zhang, Jiangshe Zhang

Multi-Focus Image Fusion (MFIF) is a promising image enhancement technique to obtain all-in-focus images meeting visual needs and it is a precondition of other computer vision tasks.

Generative Adversarial Network Image Enhancement

When Image Decomposition Meets Deep Learning: A Novel Infrared and Visible Image Fusion Method

no code implementations2 Sep 2020 Zixiang Zhao, Jiangshe Zhang, Shuang Xu, Kai Sun, Chunxia Zhang, Junmin Liu

The core idea is that the encoder decomposes an image into base and detail feature maps with low- and high-frequency information, respectively, and that the decoder is responsible for the original image reconstruction.

Image Enhancement Image Reconstruction +1

Deep Convolutional Sparse Coding Networks for Image Fusion

2 code implementations18 May 2020 Shuang Xu, Zixiang Zhao, Yicheng Wang, Chun-Xia Zhang, Junmin Liu, Jiangshe Zhang

Image fusion is a significant problem in many fields including digital photography, computational imaging and remote sensing, to name but a few.

Infrared And Visible Image Fusion Multi-Exposure Image Fusion

Bayesian Fusion for Infrared and Visible Images

2 code implementations12 May 2020 Zixiang Zhao, Shuang Xu, Chun-Xia Zhang, Junmin Liu, Jiangshe Zhang

In this paper, a novel Bayesian fusion model is established for infrared and visible images.

Infrared And Visible Image Fusion

Efficient and Model-Based Infrared and Visible Image Fusion Via Algorithm Unrolling

no code implementations12 May 2020 Zixiang Zhao, Shuang Xu, Jiangshe Zhang, Chengyang Liang, Chunxia Zhang, Junmin Liu

The proposed AUIF model starts with the iterative formulas of two traditional optimization models, which are established to accomplish two-scale decomposition, i. e., separating low-frequency base information and high-frequency detail information from source images.

Infrared And Visible Image Fusion Rolling Shutter Correction

DIDFuse: Deep Image Decomposition for Infrared and Visible Image Fusion

2 code implementations20 Mar 2020 Zixiang Zhao, Shuang Xu, Chun-Xia Zhang, Junmin Liu, Pengfei Li, Jiangshe Zhang

Infrared and visible image fusion, a hot topic in the field of image processing, aims at obtaining fused images keeping the advantages of source images.

Infrared And Visible Image Fusion Semantic Segmentation

MFFW: A new dataset for multi-focus image fusion

no code implementations12 Feb 2020 Shuang Xu, Xiaoli Wei, Chunxia Zhang, Junmin Liu, Jiangshe Zhang

It is found that current methods are evaluated on simulated image sets or Lytro dataset.

Cannot find the paper you are looking for? You can Submit a new open access paper.