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Multi-modal Contrastive Representation learning aims to encode different modalities into a semantically aligned shared space. This paradigm shows remarkable generalization ability on numerous downstream tasks across various modalities.…

Machine Learning · Computer Science 2023-10-20 Zehan Wang , Yang Zhao , Xize Cheng , Haifeng Huang , Jiageng Liu , Li Tang , Linjun Li , Yongqi Wang , Aoxiong Yin , Ziang Zhang , Zhou Zhao

We develop an approach to learning visual representations that embraces multimodal data, driven by a combination of intra- and inter-modal similarity preservation objectives. Unlike existing visual pre-training methods, which solve a proxy…

Computer Vision and Pattern Recognition · Computer Science 2021-04-28 Xin Yuan , Zhe Lin , Jason Kuen , Jianming Zhang , Yilin Wang , Michael Maire , Ajinkya Kale , Baldo Faieta

Vision-Language Models (VLMs), such as CLIP, exhibit strong image-text comprehension abilities, facilitating advances in several downstream tasks such as zero-shot image classification, image-text retrieval, and text-to-image generation.…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Le Zhang , Rabiul Awal , Aishwarya Agrawal

Contrastive Language-Image Pre-training (CLIP) has become a cornerstone in multimodal intelligence. However, recent studies discovered that CLIP can only encode one aspect of the feature space, leading to substantial information loss and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Jihai Zhang , Xiaoye Qu , Tong Zhu , Yu Cheng

Multimodal learning aims to imitate human beings to acquire complementary information from multiple modalities for various downstream tasks. However, traditional aggregation-based multimodal fusion methods ignore the inter-modality…

Computer Vision and Pattern Recognition · Computer Science 2023-05-17 Heqing Zou , Meng Shen , Chen Chen , Yuchen Hu , Deepu Rajan , Eng Siong Chng

In deepfake detection, the varying degrees of compression employed by social media platforms pose significant challenges for model generalization and reliability. Although existing methods have progressed from single-modal to multimodal…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Ching-Yi Lai , Chih-Yu Jian , Pei-Cheng Chuang , Chia-Ming Lee , Chih-Chung Hsu , Chiou-Ting Hsu , Chia-Wen Lin

This work considers supervised contrastive learning for semantic segmentation. We apply contrastive learning to enhance the discriminative power of the multi-scale features extracted by semantic segmentation networks. Our key methodological…

Computer Vision and Pattern Recognition · Computer Science 2022-07-21 Theodoros Pissas , Claudio S. Ravasio , Lyndon Da Cruz , Christos Bergeles

Existing contrastive language-image pre-training aims to learn a joint representation by matching abundant image-text pairs. However, the number of image-text pairs in medical datasets is usually orders of magnitude smaller than that in…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Jiarun Liu , Hong-Yu Zhou , Cheng Li , Weijian Huang , Hao Yang , Yong Liang , Shanshan Wang

Contrastive learning is a powerful technique to learn representations that are semantically distinctive and geometrically invariant. While most of the earlier approaches have demonstrated its effectiveness on single-modality learning tasks…

Computer Vision and Pattern Recognition · Computer Science 2021-10-19 Anurag Jain , Yashaswi Verma

Self-supervised Multi-modal Contrastive Learning (SMCL) remarkably advances modern Vision-Language Pre-training (VLP) models by aligning visual and linguistic modalities. Due to noises in web-harvested text-image pairs, however, scaling up…

Machine Learning · Computer Science 2024-02-27 Chaoya Jiang , Wei ye , Haiyang Xu , Qinghao Ye , Ming Yan , Ji Zhang , Shikun Zhang

Multi-label classification, which involves assigning multiple labels to a single input, has emerged as a key area in both research and industry due to its wide-ranging applications. Designing effective loss functions is crucial for…

Machine Learning · Computer Science 2025-01-06 Alexandre Audibert , Aurélien Gauffre , Massih-Reza Amini

Semi-supervised learning acts as an effective way to leverage massive unlabeled data. In this paper, we propose a novel training strategy, termed as Semi-supervised Contrastive Learning (SsCL), which combines the well-known contrastive loss…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Yuhang Zhang , Xiaopeng Zhang , Robert. C. Qiu , Jie Li , Haohang Xu , Qi Tian

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

Pretrained vision-language models (VLMs) like CLIP exhibit exceptional generalization across diverse downstream tasks. While recent studies reveal their vulnerability to adversarial attacks, research to date has primarily focused on…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Wanqi Zhou , Shuanghao Bai , Danilo P. Mandic , Qibin Zhao , Badong Chen

The application of Contrastive Language-Image Pre-training (CLIP) in Weakly Supervised Semantic Segmentation (WSSS) research powerful cross-modal semantic understanding capabilities. Existing methods attempt to optimize input text prompts…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Zhongxing Xu , Feilong Tang , Zhe Chen , Yingxue Su , Zhiyi Zhao , Ge Zhang , Jionglong Su , Zongyuan Ge

Recent multimodal models such as Contrastive Language-Image Pre-training (CLIP) have shown remarkable ability to align visual and linguistic representations. However, domains where small visual differences carry large semantic significance,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Hiroshi Sasaki

Standard contrastive learning approaches usually require a large number of negatives for effective unsupervised learning and often exhibit slow convergence. We suspect this behavior is due to the suboptimal selection of negatives used for…

Machine Learning · Computer Science 2021-12-22 Anshul Shah , Suvrit Sra , Rama Chellappa , Anoop Cherian

In this work, we present Multi-Level Contrastive Learning for Dense Prediction Task (MCL), an efficient self-supervised method for learning region-level feature representation for dense prediction tasks. Our method is motivated by the three…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Qiushan Guo , Yizhou Yu , Yi Jiang , Jiannan Wu , Zehuan Yuan , Ping Luo

Large-scale multi-modal contrastive learning frameworks like CLIP typically require a large amount of image-text samples for training. However, these samples are always collected continuously in real scenarios. This paper discusses the…

Machine Learning · Computer Science 2023-06-02 Zixuan Ni , Longhui Wei , Siliang Tang , Yueting Zhuang , Qi Tian

Contrastive language-image pre-training (CLIP) serves as a de-facto standard to align images and texts. Nonetheless, the loose correlation between images and texts of web-crawled data renders the contrastive objective data inefficient and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Jinghao Zhou , Li Dong , Zhe Gan , Lijuan Wang , Furu Wei