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Contrastive vision-language models continue to be the dominant approach for image and text retrieval. Contrastive Language-Image Pre-training (CLIP) trains two neural networks in contrastive manner to align their image and text embeddings…

Computer Vision and Pattern Recognition · Computer Science 2025-11-21 Kwun Ho Ngan , Saman Sadeghi Afgeh , Joe Townsend , Artur d'Avila Garcez

The existing multi-modal face anti-spoofing (FAS) frameworks are designed based on two strategies: halfway and late fusion. However, the former requires test modalities consistent with the training input, which seriously limits its…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Ajian Liu , Yanyan Liang

Prompt learning has become one of the most efficient paradigms for adapting large pre-trained vision-language models to downstream tasks. Current state-of-the-art methods, like CoOp and ProDA, tend to adopt soft prompts to learn an…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Sifan Long , Zhen Zhao , Junkun Yuan , Zichang Tan , Jiangjiang Liu , Luping Zhou , Shengsheng Wang , Jingdong Wang

Defending pre-trained vision-language models (VLMs), such as CLIP, against adversarial attacks is crucial, as these models are widely used in diverse zero-shot tasks, including image classification. However, existing adversarial training…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Futa Waseda , Saku Sugawara , Isao Echizen

Contrastive Language-Image Pretraining (CLIP) has achieved remarkable success, leading to rapid advancements in multimodal studies. However, CLIP faces a notable challenge in terms of inefficient data utilization. It relies on a single…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Yu Zhang , Qi Zhang , Zixuan Gong , Yiwei Shi , Yepeng Liu , Duoqian Miao , Yang Liu , Ke Liu , Kun Yi , Wei Fan , Liang Hu , Changwei Wang

Recently, Vision-Language Pre-training (VLP) techniques have greatly benefited various vision-language tasks by jointly learning visual and textual representations, which intuitively helps in Optical Character Recognition (OCR) tasks due to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Chuhui Xue , Wenqing Zhang , Yu Hao , Shijian Lu , Philip Torr , Song Bai

Self-attention mechanisms, especially multi-head self-attention (MSA), have achieved great success in many fields such as computer vision and natural language processing. However, many existing vision transformer (ViT) works simply inherent…

Computer Vision and Pattern Recognition · Computer Science 2022-11-17 Leijie Wu , Song Guo , Yaohong Ding , Junxiao Wang , Wenchao Xu , Richard Yida Xu , Jie Zhang

Text-based person retrieval aims to identify the specific persons using textual descriptions as queries. Existing ad vanced methods typically depend on vision-language pre trained (VLP) models to facilitate effective cross-modal alignment.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Bin Kang , Bin Chen , Junjie Wang , Yong Xu

Pre-trained neural language models bring significant improvement for various NLP tasks, by fine-tuning the models on task-specific training sets. During fine-tuning, the parameters are initialized from pre-trained models directly, which…

Computation and Language · Computer Science 2020-09-17 Chengyu Wang , Minghui Qiu , Jun Huang , Xiaofeng He

The recent advancements in Generative Adversarial Networks (GANs) and the emergence of Diffusion models have significantly streamlined the production of highly realistic and widely accessible synthetic content. As a result, there is a…

Computer Vision and Pattern Recognition · Computer Science 2024-02-21 Sohail Ahmed Khan , Duc-Tien Dang-Nguyen

Contrastive Language-Image Pre-training (CLIP) relies on Vision Transformers whose attention mechanism is susceptible to spurious correlations, and scales quadratically with resolution. To address these limitations, We present CLIMP, the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Nimrod Shabtay , Itamar Zimerman , Eli Schwartz , Raja Giryes

Face Anti-Spoofing (FAS) is essential for ensuring the security and reliability of facial recognition systems. Most existing FAS methods are formulated as binary classification tasks, providing confidence scores without interpretation. They…

Computer Vision and Pattern Recognition · Computer Science 2025-01-27 Guosheng Zhang , Keyao Wang , Haixiao Yue , Ajian Liu , Gang Zhang , Kun Yao , Errui Ding , Jingdong Wang

Minimizing inconsistencies across successive versions of an AI system is as crucial as reducing the overall error. In image classification, such inconsistencies manifest as negative flips, where an updated model misclassifies test samples…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Simone Ricci , Niccolò Biondi , Federico Pernici , Alberto Del Bimbo

Large-scale Vision-Language Foundation Models (VLFMs), such as CLIP, now underpin a wide range of computer vision research and applications. VLFMs are often adapted to various domain-specific tasks. However, VLFM performance on novel,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Chris Vorster , Mayug Maniparambil , Noel E. O'Connor , Noel Murphy , Derek Molloy

Despite inheriting security measures from underlying language models, Vision-Language Models (VLMs) may still be vulnerable to safety alignment issues. Through empirical analysis, we uncover two critical findings: scenario-matched images…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Shuyang Hao , Bryan Hooi , Jun Liu , Kai-Wei Chang , Zi Huang , Yujun Cai

Is vision good enough for language? Recent advancements in multimodal models primarily stem from the powerful reasoning abilities of large language models (LLMs). However, the visual component typically depends only on the instance-level…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Shengbang Tong , Zhuang Liu , Yuexiang Zhai , Yi Ma , Yann LeCun , Saining Xie

The detection of small objects is a challenging task in computer vision. Conventional object detection methods have difficulty in finding the balance between high detection and low false alarm rates. In the literature, some methods have…

Computer Vision and Pattern Recognition · Computer Science 2024-02-06 Alina Ciocarlan , Sylvie Le Hegarat-Mascle , Sidonie Lefebvre , Arnaud Woiselle

Recent research on fine-tuning vision-language models has demonstrated impressive performance in various downstream tasks. However, the challenge of obtaining accurately labeled data in real-world applications poses a significant obstacle…

Machine Learning · Computer Science 2024-10-01 Tong Wei , Hao-Tian Li , Chun-Shu Li , Jiang-Xin Shi , Yu-Feng Li , Min-Ling Zhang

In recent years, the growing demand for medical imaging diagnosis has placed a significant burden on radiologists. As a solution, Medical Vision-Language Pre-training (Med-VLP) methods have been proposed to learn universal representations…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Ke Zhang , Yan Yang , Jun Yu , Hanliang Jiang , Jianping Fan , Qingming Huang , Weidong Han

Large-scale pre-trained Vision-Language Models (VLMs) have exhibited impressive zero-shot performance and transferability, allowing them to adapt to downstream tasks in a data-efficient manner. However, when only a few labeled samples are…

Computer Vision and Pattern Recognition · Computer Science 2024-11-11 Ce Zhang , Simon Stepputtis , Katia Sycara , Yaqi Xie