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Contrastive Language-Image Pretraining (CLIP) has emerged as a novel paradigm to learn visual models from language supervision. While researchers continue to push the frontier of CLIP, reproducing these works remains challenging. This is…

Computer Vision and Pattern Recognition · Computer Science 2022-03-14 Yufeng Cui , Lichen Zhao , Feng Liang , Yangguang Li , Jing Shao

Recent works in 3D multimodal learning have made remarkable progress. However, typically 3D multimodal models are only capable of handling point clouds. Compared to the emerging 3D representation technique, 3D Gaussian Splatting (3DGS), the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Siyu Jiao , Haoye Dong , Yuyang Yin , Zequn Jie , Yinlong Qian , Yao Zhao , Humphrey Shi , Yunchao Wei

Learning robust and effective representations of visual data is a fundamental task in computer vision. Traditionally, this is achieved by training models with labeled data which can be expensive to obtain. Self-supervised learning attempts…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Mehmet Aygün , Prithviraj Dhar , Zhicheng Yan , Oisin Mac Aodha , Rakesh Ranjan

This paper investigates the robustness of vision-language models against adversarial visual perturbations and introduces a novel ``double visual defense" to enhance this robustness. Unlike previous approaches that resort to lightweight…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Zeyu Wang , Cihang Xie , Brian Bartoldson , Bhavya Kailkhura

We introduce Duoduo CLIP, a model for 3D representation learning that learns shape encodings from multi-view images instead of point clouds. The choice of multi-view images allows us to leverage 2D priors from off-the-shelf CLIP models to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Han-Hung Lee , Yiming Zhang , Angel X. Chang

The recognition capabilities of current state-of-the-art 3D models are limited by datasets with a small number of annotated data and a pre-defined set of categories. In its 2D counterpart, recent advances have shown that similar problems…

Computer Vision and Pattern Recognition · Computer Science 2023-06-14 Le Xue , Mingfei Gao , Chen Xing , Roberto Martín-Martín , Jiajun Wu , Caiming Xiong , Ran Xu , Juan Carlos Niebles , Silvio Savarese

Despite the success of large-scale pretrained Vision-Language Models (VLMs) especially CLIP in various open-vocabulary tasks, their application to semantic segmentation remains challenging, producing noisy segmentation maps with…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Mengcheng Lan , Chaofeng Chen , Yiping Ke , Xinjiang Wang , Litong Feng , Wayne Zhang

We show that denoising of 3D point clouds can be learned unsupervised, directly from noisy 3D point cloud data only. This is achieved by extending recent ideas from learning of unsupervised image denoisers to unstructured 3D point clouds.…

Computer Vision and Pattern Recognition · Computer Science 2019-10-21 Pedro Hermosilla , Tobias Ritschel , Timo Ropinski

Training a 3D scene understanding model requires complicated human annotations, which are laborious to collect and result in a model only encoding close-set object semantics. In contrast, vision-language pre-training models (e.g., CLIP)…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Junbo Zhang , Runpei Dong , Kaisheng Ma

Contrastive Language-Image Pre-training, benefiting from large-scale unlabeled text-image pairs, has demonstrated great performance in open-world vision understanding tasks. However, due to the limited Text-3D data pairs, adapting the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Yihan Zeng , Chenhan Jiang , Jiageng Mao , Jianhua Han , Chaoqiang Ye , Qingqiu Huang , Dit-Yan Yeung , Zhen Yang , Xiaodan Liang , Hang Xu

Deep Learning (DL) is undergoing a paradigm shift with the emergence of foundation models. In this work, we focus on Contrastive Language-Image Pre-training (CLIP), a Vision-Language foundation model that achieves high accuracy across…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Angelos Zavras , Dimitrios Michail , Begüm Demir , Ioannis Papoutsis

As a pivotal technique for improving the defense of deep models, adversarial robustness transfer via distillation has demonstrated remarkable success in conventional image classification tasks. However, this paradigm encounters critical…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Xiaowei Fu , Fuxiang Huang , Lei Zhang

Despite their impressive zero-shot abilities, vision-language models such as CLIP have been shown to be susceptible to adversarial attacks. To enhance its adversarial robustness, recent studies finetune the pretrained vision encoder of CLIP…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Songlong Xing , Weijie Wang , Zhengyu Zhao , Jindong Gu , Philip Torr , Nicu Sebe

We propose DiffCLIP, a novel vision-language model that extends the differential attention mechanism to CLIP architectures. Differential attention was originally developed for large language models to amplify relevant context while…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Hasan Abed Al Kader Hammoud , Bernard Ghanem

Large pre-trained models have had a significant impact on computer vision by enabling multi-modal learning, where the CLIP model has achieved impressive results in image classification, object detection, and semantic segmentation. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Sitian Shen , Zilin Zhu , Linqian Fan , Harry Zhang , Xinxiao Wu

Dense visual prediction tasks have been constrained by their reliance on predefined categories, limiting their applicability in real-world scenarios where visual concepts are unbounded. While Vision-Language Models (VLMs) like CLIP have…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Junjie Wang , Bin Chen , Yulin Li , Bin Kang , Yichi Chen , Zhuotao Tian

The recent success of pre-trained 2D vision models is mostly attributable to learning from large-scale datasets. However, compared with 2D image datasets, the current pre-training data of 3D point cloud is limited. To overcome this…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Yuan Yao , Yuanhan Zhang , Zhenfei Yin , Jiebo Luo , Wanli Ouyang , Xiaoshui Huang

Contrastive Language-Image Pre-training (CLIP) has achieved excellent performance over a wide range of tasks. However, the effectiveness of CLIP heavily relies on a substantial corpus of pre-training data, resulting in notable consumption…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Kaicheng Yang , Tiancheng Gu , Xiang An , Haiqiang Jiang , Xiangzi Dai , Ziyong Feng , Weidong Cai , Jiankang Deng

Deep neural networks are proven to be vulnerable to fine-designed adversarial examples, and adversarial defense algorithms draw more and more attention nowadays. Pre-processing based defense is a major strategy, as well as learning robust…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Decheng Liu , Tao Chen , Chunlei Peng , Nannan Wang , Ruimin Hu , Xinbo Gao

The Visual Language Model, known for its robust cross-modal capabilities, has been extensively applied in various computer vision tasks. In this paper, we explore the use of CLIP (Contrastive Language-Image Pretraining), a vision-language…

Computer Vision and Pattern Recognition · Computer Science 2025-02-12 Huazhong Zhao , Lei Qi , Xin Geng