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Contrastive language image pretraining (CLIP) is a standard method for training vision-language models. While CLIP is scalable, promptable, and robust to distribution shifts on image classification tasks, it lacks object localization…

Unsupervised adaptation of CLIP-based vision-language models (VLMs) for fine-grained image classification requires sensitivity to microscopic local cues. While CLIP exhibits strong zero-shot transfer, its reliance on coarse global features…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Sathira Silva , Eman Ali , Chetan Arora , Muhammad Haris Khan

Contrastive Language-Image Pre-training (CLIP) achieves remarkable performance in various downstream tasks through the alignment of image and text input embeddings and holds great promise for anomaly detection. However, our empirical…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Adam Goodge , Bryan Hooi , Wee Siong Ng

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

Image captioning aims at generating descriptive and meaningful textual descriptions of images, enabling a broad range of vision-language applications. Prior works have demonstrated that harnessing the power of Contrastive Image Language…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Longtian Qiu , Shan Ning , Xuming He

Contrastive language image pre-training (CLIP) is an essential component of building modern vision-language foundation models. While CLIP demonstrates remarkable zero-shot performance on downstream tasks, the multi-modal feature spaces…

Computer Vision and Pattern Recognition · Computer Science 2025-04-18 Shin'ya Yamaguchi , Dewei Feng , Sekitoshi Kanai , Kazuki Adachi , Daiki Chijiwa

Contrastive Language-Image Pre-training (CLIP) has recently shown great promise in pixel-level zero-shot learning tasks. However, existing approaches utilizing CLIP's text and patch embeddings to generate semantic masks often misidentify…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Jingyao Li , Pengguang Chen , Shengju Qian , Shu Liu , Jiaya Jia

Treating texts as images, combining prompts with textual labels for prompt tuning, and leveraging the alignment properties of CLIP have been successfully applied in zero-shot multi-label image recognition. Nonetheless, relying solely on…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Haonan Xu , Dian Chao , Xiangyu Wu , Zhonghua Wan , Yang Yang

Recent progress has shown that large-scale pre-training using contrastive image-text pairs can be a promising alternative for high-quality visual representation learning from natural language supervision. Benefiting from a broader source of…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Yongming Rao , Wenliang Zhao , Guangyi Chen , Yansong Tang , Zheng Zhu , Guan Huang , Jie Zhou , Jiwen Lu

Contrastive Language-Image Pre-training (CLIP) has been the cornerstone for zero-shot classification, text-image retrieval, and text-image generation by aligning image and text modalities. Despite its widespread adoption, a significant…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Beichen Zhang , Pan Zhang , Xiaoyi Dong , Yuhang Zang , Jiaqi Wang

Large-scale Pre-Training Vision-Language Model such as CLIP has demonstrated outstanding performance in zero-shot classification, e.g. achieving 76.3% top-1 accuracy on ImageNet without seeing any example, which leads to potential benefits…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Xuefeng Hu , Ke Zhang , Lu Xia , Albert Chen , Jiajia Luo , Yuyin Sun , Ken Wang , Nan Qiao , Xiao Zeng , Min Sun , Cheng-Hao Kuo , Ram Nevatia

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

Contrastive Language-Image Pre-training (CLIP) on large-scale image-caption datasets learns representations that can achieve remarkable zero-shot generalization. However, such models require a massive amount of pre-training data. Improving…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Siddharth Joshi , Arnav Jain , Ali Payani , Baharan Mirzasoleiman

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

Contrastive Language-Image Pre-training (CLIP) formulates image classification as an image-to-text matching task, i.e., matching images to the corresponding natural language descriptions instead of discrete category IDs. This allows for…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Shuhuai Ren , Lei Li , Xuancheng Ren , Guangxiang Zhao , Xu Sun

In this paper, a novel contrastive language-image pre-training (CLIP) model based semantic communication framework is designed. Compared to standard neural network (e.g.,convolutional neural network) based semantic encoders and decoders…

Machine Learning · Computer Science 2025-07-15 Shaoran Yang , Dongyu Wei , Hanzhi Yu , Zhaohui Yang , Yuchen Liu , Mingzhe Chen

Large-scale natural image-text datasets, especially those automatically collected from the web, often suffer from loose semantic alignment due to weak supervision, while medical datasets tend to have high cross-modal correlation but low…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Shengzhu Yang , Jiawei Du , Shuai Lu , Weihang Zhang , Ningli Wang , Huiqi Li

Vision-language models like CLIP have shown impressive capabilities in aligning images and text, but they often struggle with lengthy and detailed text descriptions because of their training focus on short and concise captions. We present…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Hyungyu Choi , Young Kyun Jang , Chanho Eom

CLIP achieves strong zero-shot image-text retrieval by aligning global vision and text representations, yet it falls behind on fine-grained tasks even when fine-tuned on long, detailed captions. In this work, we propose $\beta$-CLIP, a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Fatimah Zohra , Chen Zhao , Hani Itani , Bernard Ghanem

Contrastive language-image pre-training, CLIP for short, has gained increasing attention for its potential in various scenarios. In this paper, we propose EVA-CLIP, a series of models that significantly improve the efficiency and…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Quan Sun , Yuxin Fang , Ledell Wu , Xinlong Wang , Yue Cao