Search Results for author: Jiahao Xie

Found 18 papers, 9 papers with code

MosaicFusion: Diffusion Models as Data Augmenters for Large Vocabulary Instance Segmentation

1 code implementation22 Sep 2023 Jiahao Xie, Wei Li, Xiangtai Li, Ziwei Liu, Yew Soon Ong, Chen Change Loy

We present MosaicFusion, a simple yet effective diffusion-based data augmentation approach for large vocabulary instance segmentation.

Data Augmentation Instance Segmentation +1

Towards Optimal Randomized Strategies in Adversarial Example Game

no code implementations29 Jun 2023 Jiahao Xie, Chao Zhang, Weijie Liu, Wensong Bai, Hui Qian

The vulnerability of deep neural network models to adversarial example attacks is a practical challenge in many artificial intelligence applications.

An Asynchronous Decentralized Algorithm for Wasserstein Barycenter Problem

no code implementations23 Apr 2023 Chao Zhang, Hui Qian, Jiahao Xie

Wasserstein Barycenter Problem (WBP) has recently received much attention in the field of artificial intelligence.

A Random-patch based Defense Strategy Against Physical Attacks for Face Recognition Systems

no code implementations16 Apr 2023 Jiahao Xie, Ye Luo, Jianwei Lu

In this paper, we propose a random-patch based defense strategy to robustly detect physical attacks for Face Recognition System (FRS).

Face Recognition

Correlational Image Modeling for Self-Supervised Visual Pre-Training

1 code implementation CVPR 2023 Wei Li, Jiahao Xie, Chen Change Loy

We introduce Correlational Image Modeling (CIM), a novel and surprisingly effective approach to self-supervised visual pre-training.

Super-Resolution Information Enhancement For Crowd Counting

1 code implementation13 Mar 2023 Jiahao Xie, Wei Xu, Dingkang Liang, Zhanyu Ma, Kongming Liang, Weidong Liu, Rui Wang, Ling Jin

As the proposed method requires SR labels, we further propose a Super-Resolution Crowd Counting dataset (SR-Crowd).

Crowd Counting Super-Resolution

Controllable Image Captioning via Prompting

no code implementations4 Dec 2022 Ning Wang, Jiahao Xie, Jihao Wu, Mingbo Jia, Linlin Li

Despite the remarkable progress of image captioning, existing captioners typically lack the controllable capability to generate desired image captions, e. g., describing the image in a rough or detailed manner, in a factual or emotional view, etc.

controllable image captioning Prompt Engineering

Masked Frequency Modeling for Self-Supervised Visual Pre-Training

3 code implementations15 Jun 2022 Jiahao Xie, Wei Li, Xiaohang Zhan, Ziwei Liu, Yew Soon Ong, Chen Change Loy

We present Masked Frequency Modeling (MFM), a unified frequency-domain-based approach for self-supervised pre-training of visual models.

Image Classification Image Restoration +2

UniVIP: A Unified Framework for Self-Supervised Visual Pre-training

no code implementations CVPR 2022 Zhaowen Li, Yousong Zhu, Fan Yang, Wei Li, Chaoyang Zhao, Yingying Chen, Zhiyang Chen, Jiahao Xie, Liwei Wu, Rui Zhao, Ming Tang, Jinqiao Wang

Furthermore, our method can also exploit single-centric-object dataset such as ImageNet and outperforms BYOL by 2. 5% with the same pre-training epochs in linear probing, and surpass current self-supervised object detection methods on COCO dataset, demonstrating its universality and potential.

Image Classification Object +4

Unsupervised Object-Level Representation Learning from Scene Images

1 code implementation NeurIPS 2021 Jiahao Xie, Xiaohang Zhan, Ziwei Liu, Yew Soon Ong, Chen Change Loy

Extensive experiments on COCO show that ORL significantly improves the performance of self-supervised learning on scene images, even surpassing supervised ImageNet pre-training on several downstream tasks.

Object Representation Learning +2

CDMA: A Practical Cross-Device Federated Learning Algorithm for General Minimax Problems

1 code implementation29 May 2021 Jiahao Xie, Chao Zhang, Zebang Shen, Weijie Liu, Hui Qian

We establish theoretical guarantees of CDMA under different choices of hyperparameters and conduct experiments on AUC maximization, robust adversarial network training, and GAN training tasks.

Federated Learning Generative Adversarial Network

L-SNet: from Region Localization to Scale Invariant Medical Image Segmentation

no code implementations11 Feb 2021 Jiahao Xie, Sheng Zhang, Jianwei Lu, Ye Luo

Coarse-to-fine models and cascade segmentation architectures are widely adopted to solve the problem of large scale variations in medical image segmentation.

Image Segmentation Medical Image Segmentation +2

Partial Gromov-Wasserstein Learning for Partial Graph Matching

no code implementations2 Dec 2020 Weijie Liu, Chao Zhang, Jiahao Xie, Zebang Shen, Hui Qian, Nenggan Zheng

Graph matching finds the correspondence of nodes across two graphs and is a basic task in graph-based machine learning.

Graph Matching

Delving into Inter-Image Invariance for Unsupervised Visual Representations

2 code implementations26 Aug 2020 Jiahao Xie, Xiaohang Zhan, Ziwei Liu, Yew Soon Ong, Chen Change Loy

In this work, we present a comprehensive empirical study to better understand the role of inter-image invariance learning from three main constituting components: pseudo-label maintenance, sampling strategy, and decision boundary design.

Contrastive Learning Pseudo Label +1

Efficient Projection-Free Online Methods with Stochastic Recursive Gradient

no code implementations21 Oct 2019 Jiahao Xie, Zebang Shen, Chao Zhang, Boyu Wang, Hui Qian

This paper focuses on projection-free methods for solving smooth Online Convex Optimization (OCO) problems.

Aggregated Gradient Langevin Dynamics

no code implementations21 Oct 2019 Chao Zhang, Jiahao Xie, Zebang Shen, Peilin Zhao, Tengfei Zhou, Hui Qian

In this paper, we explore a general Aggregated Gradient Langevin Dynamics framework (AGLD) for the Markov Chain Monte Carlo (MCMC) sampling.

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