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This work aims to adapt large-scale pre-trained vision-language models, such as contrastive language-image pretraining (CLIP), to enhance the performance of object reidentification (Re-ID) across various supervision settings. Although…

计算机视觉与模式识别 · 计算机科学 2026-01-15 Jiachen Li , Xiaojin Gong

Treating texts as images, combining prompts with textual labels for prompt tuning, and leveraging the alignment properties of CLIP have been successfully applied in zero-shot multi-label image recognition. Nonetheless, relying solely on…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Haonan Xu , Dian Chao , Xiangyu Wu , Zhonghua Wan , Yang Yang

Multimodal contrastive learning has emerged as a powerful paradigm for building high-quality features using the complementary strengths of various data modalities. However, the open nature of such systems inadvertently increases the…

计算机视觉与模式识别 · 计算机科学 2024-03-26 Siyuan Liang , Kuanrong Liu , Jiajun Gong , Jiawei Liang , Yuan Xun , Ee-Chien Chang , Xiaochun Cao

Multi-modal contrastive models such as CLIP achieve state-of-the-art performance in zero-shot classification by embedding input images and texts on a joint representational space. Recently, a modality gap has been reported in two-encoder…

计算机视觉与模式识别 · 计算机科学 2024-06-10 Abrar Fahim , Alex Murphy , Alona Fyshe

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…

机器学习 · 计算机科学 2025-10-14 Keke Gai , Dongjue Wang , Jing Yu , Liehuang Zhu , Qi Wu

Contrastive Language-Image Pre-training (CLIP) provides a foundation model by integrating natural language into visual concepts, enabling zero-shot recognition on downstream tasks. It is usually expected that satisfactory overall accuracy…

计算机视觉与模式识别 · 计算机科学 2023-10-06 Jie-Jing Shao , Jiang-Xin Shi , Xiao-Wen Yang , Lan-Zhe Guo , Yu-Feng Li

Multimodal contrastive pretraining, exemplified by models like CLIP, has been found to be vulnerable to backdoor attacks. While current backdoor defense methods primarily employ conventional data augmentation to create augmented samples…

计算机视觉与模式识别 · 计算机科学 2024-09-25 Junhao Kuang , Siyuan Liang , Jiawei Liang , Kuanrong Liu , Xiaochun Cao

Self-supervised learning (SSL) is pervasively exploited in training high-quality upstream encoders with a large amount of unlabeled data. However, it is found to be susceptible to backdoor attacks merely via polluting a small portion of…

机器学习 · 计算机科学 2025-03-21 Sizai Hou , Songze Li , Duanyi Yao

Multimodal contrastive learning aims to train a general-purpose feature extractor, such as CLIP, on vast amounts of raw, unlabeled paired image-text data. This can greatly benefit various complex downstream tasks, including cross-modal…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Ziqi Zhou , Shengshan Hu , Minghui Li , Hangtao Zhang , Yechao Zhang , Hai Jin

The Contrastive Language-Image Pretraining (CLIP) model has significantly advanced vision-language modeling by aligning image-text pairs from large-scale web data through self-supervised contrastive learning. Yet, its reliance on uncurated…

计算机视觉与模式识别 · 计算机科学 2025-11-04 Xin Yao , Haiyang Zhao , Yimin Chen , Jiawei Guo , Kecheng Huang , Ming Zhao

Conventional object detectors rely on cross-entropy classification, which can be vulnerable to class imbalance and label noise. We propose CLIP-Joint-Detect, a simple and detector-agnostic framework that integrates CLIP-style contrastive…

计算机视觉与模式识别 · 计算机科学 2025-12-30 Behnam Raoufi , Hossein Sharify , Mohamad Mahdee Ramezanee , Khosrow Hajsadeghi , Saeed Bagheri Shouraki

Scene text retrieval aims to find all images containing the query text from an image gallery. Current efforts tend to adopt an Optical Character Recognition (OCR) pipeline, which requires complicated text detection and/or recognition…

计算机视觉与模式识别 · 计算机科学 2024-08-02 Gangyan Zeng , Yuan Zhang , Jin Wei , Dongbao Yang , Peng Zhang , Yiwen Gao , Xugong Qin , Yu Zhou

Recently, large-scale Contrastive Language-Image Pre-training (CLIP) has attracted unprecedented attention for its impressive zero-shot recognition ability and excellent transferability to downstream tasks. However, CLIP is quite…

计算机视觉与模式识别 · 计算机科学 2022-03-15 Yangguang Li , Feng Liang , Lichen Zhao , Yufeng Cui , Wanli Ouyang , Jing Shao , Fengwei Yu , Junjie Yan

Recent vision-language foundation models, such as CLIP, have demonstrated superior capabilities in learning representations that can be transferable across diverse range of downstream tasks and domains. With the emergence of such powerful…

计算机视觉与模式识别 · 计算机科学 2025-03-14 Hunmin Yang , Jongoh Jeong , Kuk-Jin Yoon

Multi-label classification is an essential task utilized in a wide variety of real-world applications. Multi-label zero-shot learning is a method for classifying images into multiple unseen categories for which no training data is…

计算机视觉与模式识别 · 计算机科学 2024-06-24 Muhammad Ali , Salman Khan

The Contrastive Language-Image Pre-training (CLIP) has recently shown remarkable generalization on "zero-shot" training and has applied to many downstream tasks. We explore the adaptation of CLIP to achieve a more efficient and generalized…

计算机视觉与模式识别 · 计算机科学 2023-08-10 Qiang Wang , Junlong Du , Ke Yan , Shouhong Ding

Organisations with limited data and computational resources increasingly outsource model training to Machine Learning as a Service (MLaaS) providers, who adapt vision-language models (VLMs) such as CLIP to downstream tasks via prompt tuning…

密码学与安全 · 计算机科学 2026-04-13 Akshit Jindal , Saket Anand , Chetan Arora , Vikram Goyal

We propose a novel unsupervised backlit image enhancement method, abbreviated as CLIP-LIT, by exploring the potential of Contrastive Language-Image Pre-Training (CLIP) for pixel-level image enhancement. We show that the open-world CLIP…

计算机视觉与模式识别 · 计算机科学 2023-10-02 Zhexin Liang , Chongyi Li , Shangchen Zhou , Ruicheng Feng , Chen Change Loy

CLIP achieves strong zero-shot image-text retrieval by aligning global vision and text representations, yet it falls behind on fine-grained tasks even when fine-tuned on long, detailed captions. In this work, we propose $\beta$-CLIP, a…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Fatimah Zohra , Chen Zhao , Hani Itani , Bernard Ghanem

Contrastive Language-Image Pretraining (CLIP) enables zero-shot inference in downstream tasks such as image-text retrieval and classification. However, recent works extending CLIP suffer from the issue of modality gap, which arises when the…

机器学习 · 计算机科学 2024-12-20 Na Min An , Eunki Kim , James Thorne , Hyunjung Shim