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Foundation models have exhibited unprecedented capabilities in tackling many domains and tasks. Models such as CLIP are currently widely used to bridge cross-modal representations, and text-to-image diffusion models are arguably the leading…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Barbara Toniella Corradini , Mustafa Shukor , Paul Couairon , Guillaume Couairon , Franco Scarselli , Matthieu Cord

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

Subject-driven text-to-image generation models create novel renditions of an input subject based on text prompts. Existing models suffer from lengthy fine-tuning and difficulties preserving the subject fidelity. To overcome these…

Computer Vision and Pattern Recognition · Computer Science 2023-06-23 Dongxu Li , Junnan Li , Steven C. H. Hoi

Vision-language models, such as contrastive language-image pre-training (CLIP), have demonstrated impressive results in natural image domains. However, these models often struggle when applied to specialized domains like remote sensing, and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Sangwoo Mo , Minkyu Kim , Kyungmin Lee , Jinwoo Shin

Vision model have gained increasing attention due to their simplicity and efficiency in Scene Text Recognition (STR) task. However, due to lacking the perception of linguistic knowledge and information, recent vision models suffer from two…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Boqiang Zhang , Hongtao Xie , Yuxin Wang , Jianjun Xu , Yongdong Zhang

As the key component in multimodal large language models (MLLMs), the ability of the visual encoder greatly affects MLLM's understanding on diverse image content. Although some large-scale pretrained vision encoders such as vision encoders…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Zhuofan Zong , Bingqi Ma , Dazhong Shen , Guanglu Song , Hao Shao , Dongzhi Jiang , Hongsheng Li , Yu Liu

Vision-language pre-training methods, e.g., CLIP, demonstrate an impressive zero-shot performance on visual categorizations with the class proxy from the text embedding of the class name. However, the modality gap between the text and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Qi Qian , Yuanhong Xu , Juhua Hu

Despite remarkable advancements in supervised pansharpening neural networks, these methods face domain adaptation challenges of resolution due to the intrinsic disparity between simulated reduced-resolution training data and real-world…

Image and Video Processing · Electrical Eng. & Systems 2025-11-17 Lihua Jian , Jiabo Liu , Shaowu Wu , Lihui Chen

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 image-text models such as CLIP form the building blocks of many state-of-the-art systems. While they excel at recognizing common generic concepts, they still struggle on fine-grained entities which are rare, or even absent from…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Ahmet Iscen , Mathilde Caron , Alireza Fathi , Cordelia Schmid

Contrastive language-image pre-training (CLIP) is a powerful vision-language model that has shown great benefits for various tasks. However, we have identified some issues with its explainability, which undermine its credibility and limit…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Yi Li , Hualiang Wang , Yiqun Duan , Jiheng Zhang , Xiaomeng Li

Text-to-image diffusion models have shown remarkable capabilities of generating high-quality images closely aligned with textual inputs. However, the effectiveness of text guidance heavily relies on the CLIP text encoder, which is trained…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Zexi Jia , Chuanwei Huang , Hongyan Fei , Yeshuang Zhu , Zhiqiang Yuan , Jinchao Zhang , Jie Zhou

Unified Multimodal models (UMMs) built on a single architecture have shown impressive performance in both understanding and generation. We identify a fundamental challenge that lies in inductive biases induced by distinct supervision…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Renjie Lu , Xulong Zhang , Xiaoyang Qu , Shangfei Wang , Jianzong Wang

Language-image pre-training is an effective technique for learning powerful representations in general domains. However, when directly turning to person representation learning, these general pre-training methods suffer from unsatisfactory…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Jialong Zuo , Jiahao Hong , Feng Zhang , Changqian Yu , Hanyu Zhou , Changxin Gao , Nong Sang , Jingdong Wang

Hallucinations in vision-language models (VLMs) hinder reliability and real-world applicability, usually stemming from distribution shifts between pretraining data and test samples. Existing solutions, such as retraining or fine-tuning on…

Multimedia · Computer Science 2025-06-10 Fei Zhao , Chengcui Zhang , Runlin Zhang , Tianyang Wang , Xi Li

Open-vocabulary dense prediction tasks including object detection and image segmentation have been advanced by the success of Contrastive Language-Image Pre-training (CLIP). CLIP models, particularly those incorporating vision transformers…

Computer Vision and Pattern Recognition · Computer Science 2024-01-25 Size Wu , Wenwei Zhang , Lumin Xu , Sheng Jin , Xiangtai Li , Wentao Liu , Chen Change Loy

There has been a significant progress in text conditional image generation models. Recent advancements in this field depend not only on improvements in model structures, but also vast quantities of text-image paired datasets. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Seungdae Han , Joohee Kim

Existing vision-text contrastive learning like CLIP aims to match the paired image and caption embeddings while pushing others apart, which improves representation transferability and supports zero-shot prediction. However, medical…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Zifeng Wang , Zhenbang Wu , Dinesh Agarwal , Jimeng Sun

Multimodal processing has attracted much attention lately especially with the success of pre-training. However, the exploration has mainly focused on vision-language pre-training, as introducing more modalities can greatly complicate model…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Ludan Ruan , Anwen Hu , Yuqing Song , Liang Zhang , Sipeng Zheng , Qin Jin

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