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The success of large-scale contrastive vision-language pretraining (CLIP) has benefited both visual recognition and multimodal content understanding. The concise design brings CLIP the advantage in inference efficiency against other…

Computer Vision and Pattern Recognition · Computer Science 2023-03-07 Shijie Geng , Jianbo Yuan , Yu Tian , Yuxiao Chen , Yongfeng Zhang

Recent deep neural networks (DNNs) have came to rely on vast amounts of training data, providing an opportunity for malicious attackers to exploit and contaminate the data to carry out backdoor attacks. However, existing backdoor attack…

Cryptography and Security · Computer Science 2024-04-22 Ziqiang Li , Hong Sun , Pengfei Xia , Heng Li , Beihao Xia , Yi Wu , Bin Li

Despite that deep learning (DL) methods have presented tremendous potential in many medical image analysis tasks, the practical applications of medical DL models are limited due to the lack of enough data samples with manual annotations. By…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Zhiyang Liu , Dong Yang , Minghao Zhang , Hanyu Sun , Hong Wu , Huiying Wang , Wen Shen , Chao Chai , Shuang Xia

The ambiguity of human emotions poses several challenges for machine learning models, as they often overlap and lack clear delineating boundaries. Contrastive language-audio pretraining (CLAP) has emerged as a key technique for…

While large scale pre-training has achieved great achievements in bridging the gap between vision and language, it still faces several challenges. First, the cost for pre-training is expensive. Second, there is no efficient way to handle…

Computation and Language · Computer Science 2021-09-23 Jue Wang , Haofan Wang , Jincan Deng , Weijia Wu , Debing Zhang

We propose Domain-Conditioned Meta-Contrastive Learning, a framework for improving the cross-domain generalization of vision-language models. While contrastive models such as CLIP achieve strong performance through large-scale training,…

Optimization and Control · Mathematics 2026-03-31 Merham Fouladvand , Peuroly Batra

Contrastive Language-Image Pre-training (CLIP) on large-scale image-caption datasets learns representations that can achieve remarkable zero-shot generalization. However, such models require a massive amount of pre-training data. Improving…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Siddharth Joshi , Arnav Jain , Ali Payani , Baharan Mirzasoleiman

Contrastive language-image pretraining (CLIP) using image-text pairs has achieved impressive results on image classification in both zero-shot and transfer learning settings. However, we show that directly applying such models to recognize…

Computer Vision and Pattern Recognition · Computer Science 2021-12-17 Yiwu Zhong , Jianwei Yang , Pengchuan Zhang , Chunyuan Li , Noel Codella , Liunian Harold Li , Luowei Zhou , Xiyang Dai , Lu Yuan , Yin Li , Jianfeng Gao

Large Language Models (LLMs) have greatly advanced Natural Language Processing (NLP), particularly through instruction tuning, which enables broad task generalization without additional fine-tuning. However, their reliance on large-scale…

Computation and Language · Computer Science 2026-04-21 San Kim , Gary Geunbae Lee

Vision-language pre-training like CLIP has shown promising performance on various downstream tasks such as zero-shot image classification and image-text retrieval. Most of the existing CLIP-alike works usually adopt relatively large image…

Computer Vision and Pattern Recognition · Computer Science 2023-12-04 Ying Nie , Wei He , Kai Han , Yehui Tang , Tianyu Guo , Fanyi Du , Yunhe Wang

The effectiveness of Contrastive Language-Image Pre-training (CLIP) models critically depends on the semantic diversity and quality of their training data. However, while existing synthetic data generation methods primarily focus on…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Yuanxiang Huangfu , Chaochao Wang , Weilei Wang

We propose a stealthy clean-label video backdoor attack against Deep Learning (DL)-based models aiming at detecting a particular class of spoofing attacks, namely video rebroadcast attacks. The injected backdoor does not affect spoofing…

Computer Vision and Pattern Recognition · Computer Science 2022-06-03 Wei Guo , Benedetta Tondi , Mauro Barni

Recent work has shown that self-supervised pre-training leads to improvements over supervised learning on challenging visual recognition tasks. CLIP, an exciting new approach to learning with language supervision, demonstrates promising…

Computer Vision and Pattern Recognition · Computer Science 2021-12-24 Norman Mu , Alexander Kirillov , David Wagner , Saining Xie

Contrastive Language--Image Pre-training (CLIP) has manifested remarkable improvements in zero-shot classification and cross-modal vision-language tasks. Yet, from a geometrical point of view, the CLIP embedding space has been found to have…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Sedigheh Eslami , Gerard de Melo

The continual learning setting aims to learn new tasks over time without forgetting the previous ones. The literature reports several significant efforts to tackle this problem with limited or no access to previous task data. Among such…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Vishal Thengane , Salman Khan , Munawar Hayat , Fahad Khan

Deep learning models have consistently outperformed traditional machine learning models in various classification tasks, including image classification. As such, they have become increasingly prevalent in many real world applications…

Cryptography and Security · Computer Science 2018-08-31 Cong Liao , Haoti Zhong , Anna Squicciarini , Sencun Zhu , David Miller

Defending backdoor attacks in Federated Learning (FL) under heterogeneous client data distributions encounters limitations balancing effectiveness and privacy-preserving, while most existing methods highly rely on the assumption of…

Machine Learning · Computer Science 2025-10-14 Keke Gai , Dongjue Wang , Jing Yu , Liehuang Zhu , Qi Wu

Contrastive Language-Image Pre-training (CLIP) has become a promising language-supervised visual pre-training framework. This paper aims to distill small CLIP models supervised by a large teacher CLIP model. We propose several distillation…

Computer Vision and Pattern Recognition · Computer Science 2024-05-08 Chuanguang Yang , Zhulin An , Libo Huang , Junyu Bi , Xinqiang Yu , Han Yang , Boyu Diao , Yongjun Xu

Language-image pre-training is an effective technique for learning powerful representations in general domains. However, when directly turning to person representation learning, these general pre-training methods suffer from unsatisfactory…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Jialong Zuo , Jiahao Hong , Feng Zhang , Changqian Yu , Hanyu Zhou , Changxin Gao , Nong Sang , Jingdong Wang

Accurate interpretation of Magnetic Resonance Imaging scans in clinical systems is based on a precise understanding of image contrast. This contrast is primarily governed by acquisition parameters, such as echo time and repetition time,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-04 Mehmet Yigit Avci , Pedro Borges , Paul Wright , Mehmet Yigitsoy , Sebastien Ourselin , Jorge Cardoso