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Despite recent advances in text-to-3D generation techniques, current methods often suffer from geometric inconsistencies, commonly referred to as the Janus Problem. This paper identifies the root cause of the Janus Problem: viewpoint…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Qing Zhang , Jinguang Tong , Jing Zhang , Jie Hong , Xuesong Li

Vision-language models (VLMs) such as CLIP demonstrate strong generalization in zero-shot classification but remain highly vulnerable to adversarial perturbations. Existing methods primarily focus on adversarial fine-tuning or prompt…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Xingyu Zhu , Beier Zhu , Shuo Wang , Kesen Zhao , Hanwang Zhang

Large-scale contrastive vision-language pre-training has shown significant progress in visual representation learning. Unlike traditional visual systems trained by a fixed set of discrete labels, a new paradigm was introduced in…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Peng Gao , Shijie Geng , Renrui Zhang , Teli Ma , Rongyao Fang , Yongfeng Zhang , Hongsheng Li , Yu Qiao

Recent studies have revealed that grammatical error correction methods in the sequence-to-sequence paradigm are vulnerable to adversarial attack, and simply utilizing adversarial examples in the pre-training or post-training process can…

Computation and Language · Computer Science 2023-10-24 Zecheng Tang , Kaifeng Qi , Juntao Li , Min Zhang

Large vision-language representation learning models like CLIP have demonstrated impressive performance for zero-shot transfer to downstream tasks while largely benefiting from inter-modal (image-text) alignment via contrastive objectives.…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Muhammad Waleed Gondal , Jochen Gast , Inigo Alonso Ruiz , Richard Droste , Tommaso Macri , Suren Kumar , Luitpold Staudigl

Graph contrastive learning (GCL) has emerged as a pivotal technique in the domain of graph representation learning. A crucial aspect of effective GCL is the caliber of generated positive and negative samples, which is intrinsically dictated…

Machine Learning · Computer Science 2024-02-19 Xinjian Zhao , Liang Zhang , Yang Liu , Ruocheng Guo , Xiangyu Zhao

Multi-modal foundation models like OpenFlamingo, LLaVA, and GPT-4 are increasingly used for various real-world tasks. Prior work has shown that these models are highly vulnerable to adversarial attacks on the vision modality. These attacks…

Machine Learning · Computer Science 2024-06-06 Christian Schlarmann , Naman Deep Singh , Francesco Croce , Matthias Hein

This paper presents a novel method that leverages a visual-language model, CLIP, as a data source for zero-shot anomaly detection. Tremendous efforts have been put towards developing anomaly detectors due to their potential industrial…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Masato Tamura

Contrastive learning has emerged as an efficient framework to learn multimodal representations. CLIP, a seminal work in this area, achieved impressive results by training on paired image-text data using the contrastive loss. Recent work…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Enrico Fini , Pietro Astolfi , Adriana Romero-Soriano , Jakob Verbeek , Michal Drozdzal

Foundation models like CLIP allow zero-shot transfer on various tasks without additional training data. Yet, the zero-shot performance is less competitive than a fully supervised one. Thus, to enhance the performance, fine-tuning and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Beier Zhu , Kaihua Tang , Qianru Sun , Hanwang Zhang

Due to the constraints on model performance imposed by the size of the training data, data augmentation has become an essential technique in deep learning. However, most existing data augmentation methods are affected by information loss…

Computer Vision and Pattern Recognition · Computer Science 2025-09-08 Yuexing Han , Gan Hu , Guanxin Wan , Bing Wang

Contrastive Vision-Language Pre-training, known as CLIP, has provided a new paradigm for learning visual representations by using large-scale contrastive image-text pairs. It shows impressive performance on zero-shot knowledge transfer to…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Renrui Zhang , Rongyao Fang , Wei Zhang , Peng Gao , Kunchang Li , Jifeng Dai , Yu Qiao , Hongsheng Li

Recent advancements in large-scale visual-language pre-trained models have led to significant progress in zero-/few-shot anomaly detection within natural image domains. However, the substantial domain divergence between natural and medical…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Chaoqin Huang , Aofan Jiang , Jinghao Feng , Ya Zhang , Xinchao Wang , Yanfeng Wang

CLIP is a widely used foundational vision-language model that is used for zero-shot image recognition and other image-text alignment tasks. We demonstrate that CLIP is vulnerable to change in image quality under compression. This surprising…

Computer Vision and Pattern Recognition · Computer Science 2023-11-27 Cangxiong Chen , Vinay P. Namboodiri , Julian Padget

Vision-Language Models (VLMs) rely heavily on pretrained vision encoders to support downstream tasks such as image captioning, visual question answering, and zero-shot classification. Despite their strong performance, these encoders remain…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Md Zarif Hossain , Ahmed Imteaj

Egocentric pose estimation for Augmented Reality (AR) and assistive devices requires not just accurate predictions but guaranteed uncertainty regions. Conformal prediction (CP) provides such guarantees without retraining, but we show that…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Aishani Pathak , Hasti Seifi

Vision-language models (VLMs), such as CLIP, have demonstrated exceptional generalization capabilities and can quickly adapt to downstream tasks through prompt fine-tuning. Unfortunately, in classification tasks involving non-training…

Computer Vision and Pattern Recognition · Computer Science 2025-02-06 Song-Lin Lv , Yu-Yang Chen , Zhi Zhou , Yu-Feng Li , Lan-Zhe Guo

CLIP, one of the pioneering foundation models that connect images and text, has enabled many recent breakthroughs in computer vision. However, its associated training cost is prohibitively high, imposing a significant barrier to its…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Xianhang Li , Zeyu Wang , Cihang Xie

Though deep neural networks have achieved the state of the art performance in visual classification, recent studies have shown that they are all vulnerable to the attack of adversarial examples. In this paper, we develop improved techniques…

Machine Learning · Computer Science 2021-09-09 Dou Goodman , Xingjian Li , Ji Liu , Dejing Dou , Tao Wei

Contrastive Language-Image Pretraining (CLIP) stands out as a prominent method for image representation learning. Various architectures, from vision transformers (ViTs) to convolutional networks (ResNets) have been trained with CLIP to…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Cristian Rodriguez-Opazo , Ehsan Abbasnejad , Damien Teney , Hamed Damirchi , Edison Marrese-Taylor , Anton van den Hengel