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Large language models (LLMs) have been effectively used for many computer vision tasks, including image classification. In this paper, we present a simple yet effective approach for zero-shot image classification using multimodal LLMs.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Abdelrahman Abdelhamed , Mahmoud Afifi , Alec Go

The process of transforming input images into corresponding textual explanations stands as a crucial and complex endeavor within the domains of computer vision and natural language processing. In this paper, we propose an innovative…

Computer Vision and Pattern Recognition · Computer Science 2024-01-15 Chang Che , Qunwei Lin , Xinyu Zhao , Jiaxin Huang , Liqiang Yu

In this paper, we consider the challenge of face morphing attacks, which substantially undermine the integrity of face recognition systems such as those adopted for use in border protection agencies. Morph detection can be formulated as…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Poorya Aghdaie , Baaria Chaudhary , Sobhan Soleymani , Jeremy Dawson , Nasser M. Nasrabadi

Although open-vocabulary classification models like Contrastive Language Image Pretraining (CLIP) have demonstrated strong zero-shot learning capabilities, their robustness to common image corruptions remains poorly understood. Through…

Computer Vision and Pattern Recognition · Computer Science 2025-08-04 Sarthak Kumar Maharana , Baoming Zhang , Leonid Karlinsky , Rogerio Feris , Yunhui Guo

Vision-language pre-training models (VLPs) have exhibited revolutionary improvements in various vision-language tasks. In VLP, some adversarial attacks fool a model into false or absurd classifications. Previous studies addressed these…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Hiroki Azuma , Yusuke Matsui

Few studies have focused on examining how people recognize morphing attacks, even as several publications have examined the susceptibility of automated FRS and offered morphing attack detection (MAD) approaches. MAD approaches base their…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Sankini Rancha Godage , Frøy Løvåsdal , Sushma Venkatesh , Kiran Raja , Raghavendra Ramachandra , Christoph Busch

Face morphing attack detection (MAD) is one of the most challenging tasks in the field of face recognition nowadays. In this work, we introduce a novel deep learning strategy for a single image face morphing detection, which implies the…

Computer Vision and Pattern Recognition · Computer Science 2022-08-08 Iurii Medvedev , Farhad Shadmand , Nuno Gonçalves

Face Recognition systems (FRS) have been found to be vulnerable to morphing attacks, where the morphed face image is generated by blending the face images from contributory data subjects. This work presents a novel direction for generating…

Computer Vision and Pattern Recognition · Computer Science 2023-10-16 Jag Mohan Singh , Raghavendra Ramachandra

Vision-and-language pretraining (VLP) in the medical field utilizes contrastive learning on image-text pairs to achieve effective transfer across tasks. Yet, current VLP approaches with the masked modeling strategy face two challenges when…

Computer Vision and Pattern Recognition · Computer Science 2025-04-17 Biao Wu , Yutong Xie , Zeyu Zhang , Minh Hieu Phan , Qi Chen , Ling Chen , Qi Wu

Although multimodal large language models (MLLMs) are increasingly deployed in real-world applications, their instruction-following behavior leaves them vulnerable to prompt injection attacks. Existing prompt injection methods predominantly…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Meiwen Ding , Song Xia , Chenqi Kong , Xudong Jiang

Facial recognition systems are susceptible to both physical and digital attacks, posing significant security risks. Traditional approaches often treat these two attack types separately due to their distinct characteristics. Thus, when being…

Computer Vision and Pattern Recognition · Computer Science 2024-08-26 Hang Zou , Chenxi Du , Hui Zhang , Yuan Zhang , Ajian Liu , Jun Wan , Zhen Lei

Bottom-up text detection methods play an important role in arbitrary-shape scene text detection but there are two restrictions preventing them from achieving their great potential, i.e., 1) the accumulation of false text segment detections,…

Multimedia · Computer Science 2024-04-29 Chengpei Xu , Wenjing Jia , Ruomei Wang , Xiaonan Luo , Xiangjian He

Face recognition systems (FRS) can be compromised by face morphing attacks, which blend textural and geometric information from multiple facial images. The rapid evolution of generative AI, especially Generative Adversarial Networks (GAN)…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Aravinda Reddy PN , Raghavendra Ramachandra , Sushma Venkatesh , Krothapalli Sreenivasa Rao , Pabitra Mitra , Rakesh Krishna

We present a Multi-Modal Recipe for Advancing Adaptation-based Pre-training towards effective and efficient zero-shot video-text retrieval, dubbed M2-RAAP. Upon popular image-text models like CLIP, most current adaptation-based video-text…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Xingning Dong , Zipeng Feng , Chunluan Zhou , Xuzheng Yu , Ming Yang , Qingpei Guo

Face anti-spoofing is crucial to the security of face recognition systems. Most previous methods formulate face anti-spoofing as a supervised learning problem to detect various predefined presentation attacks, which need large scale…

Computer Vision and Pattern Recognition · Computer Science 2021-09-08 Yunxiao Qin , Chenxu Zhao , Xiangyu Zhu , Zezheng Wang , Zitong Yu , Tianyu Fu , Feng Zhou , Jingping Shi , Zhen Lei

The contrastive vision-language pre-training, known as CLIP, demonstrates remarkable potential in perceiving open-world visual concepts, enabling effective zero-shot image recognition. Nevertheless, few-shot learning methods based on CLIP…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Cheng Cheng , Lin Song , Ruoyi Xue , Hang Wang , Hongbin Sun , Yixiao Ge , Ying Shan

Contrastive vision-language representation learning has achieved state-of-the-art performance for zero-shot classification, by learning from millions of image-caption pairs crawled from the internet. However, the massive data that powers…

Computer Vision and Pattern Recognition · Computer Science 2023-12-21 Wenhan Yang , Jingdong Gao , Baharan Mirzasoleiman

CLIP (Contrastive Language-Image Pre-Training) has shown remarkable zero-shot transfer capabilities in cross-modal correlation tasks such as visual classification and image retrieval. However, its performance in cross-modal generation tasks…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Junyang Wang , Yi Zhang , Ming Yan , Ji Zhang , Jitao Sang

Pre-trained Vision-Language Models (VLMs), like CLIP, exhibit strong generalization ability to downstream tasks but struggle in few-shot scenarios. Existing prompting techniques primarily focus on global text and image representations, yet…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Xin Liu , Jiamin Wu , and Wenfei Yang , Xu Zhou , Tianzhu Zhang

Contrastive pretraining of image-text foundation models, such as CLIP, demonstrated excellent zero-shot performance and improved robustness on a wide range of downstream tasks. However, these models utilize large transformer-based encoders…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Pavan Kumar Anasosalu Vasu , Hadi Pouransari , Fartash Faghri , Raviteja Vemulapalli , Oncel Tuzel