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Pre-trained vision-language (V-L) models such as CLIP have shown excellent generalization ability to downstream tasks. However, they are sensitive to the choice of input text prompts and require careful selection of prompt templates to…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Muhammad Uzair Khattak , Hanoona Rasheed , Muhammad Maaz , Salman Khan , Fahad Shahbaz Khan

Pre-trained Vision-Language Models (VLMs), like CLIP, exhibit strong generalization ability to downstream tasks but struggle in few-shot scenarios. Existing prompting techniques primarily focus on global text and image representations, yet…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Xin Liu , Jiamin Wu , and Wenfei Yang , Xu Zhou , Tianzhu Zhang

Multimodal contrastive learning aims to train a general-purpose feature extractor, such as CLIP, on vast amounts of raw, unlabeled paired image-text data. This can greatly benefit various complex downstream tasks, including cross-modal…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Ziqi Zhou , Shengshan Hu , Minghui Li , Hangtao Zhang , Yechao Zhang , Hai Jin

Recent works utilize CLIP to perform the challenging unsupervised semantic segmentation task where only images without annotations are available. However, we observe that when adopting CLIP to such a pixel-level understanding task,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Jingyun Wang , Guoliang Kang

Video anomaly detection is to determine whether there are any abnormal events, behaviors or objects in a given video, which enables effective and intelligent public safety management. As video anomaly labeling is both time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Yang Wang , Jiaogen Zhou , Jihong Guan

Visual foundation models like CLIP excel in learning feature representations from extensive datasets through self-supervised methods, demonstrating remarkable transfer learning and generalization capabilities. A growing number of…

Computer Vision and Pattern Recognition · Computer Science 2023-06-23 Binjie Zhang , Yixiao Ge , Xuyuan Xu , Ying Shan , Mike Zheng Shou

Video understanding has shown remarkable improvements in recent years, largely dependent on the availability of large scaled labeled datasets. Recent advancements in visual-language models, especially based on contrastive pretraining, have…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Shreyank N Gowda , Boyan Gao , Xiao Gu , Xiaobo Jin

Detecting anomalies in surveillance footage is inherently challenging due to their unpredictable and context-dependent nature. This work introduces a novel context-aware zero-shot anomaly detection framework that identifies abnormal events…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Md. Rashid Shahriar Khan , Md. Abrar Hasan , Mohammod Tareq Aziz Justice

Recently, the rise of large-scale vision-language pretrained models like CLIP, coupled with the technology of Parameter-Efficient FineTuning (PEFT), has captured substantial attraction in video action recognition. Nevertheless, prevailing…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Mengmeng Wang , Jiazheng Xing , Boyuan Jiang , Jun Chen , Jianbiao Mei , Xingxing Zuo , Guang Dai , Jingdong Wang , Yong Liu

Pretrained large-scale vision-language models like CLIP have exhibited strong generalization over unseen tasks. Yet imperceptible adversarial perturbations can significantly reduce CLIP's performance on new tasks. In this work, we identify…

Computer Vision and Pattern Recognition · Computer Science 2023-04-24 Chengzhi Mao , Scott Geng , Junfeng Yang , Xin Wang , Carl Vondrick

Vision-language models like CLIP have demonstrated remarkable zero-shot capabilities in classification and retrieval. However, these models often struggle with compositional reasoning - the ability to understand the relationships between…

Machine Learning · Computer Science 2025-10-29 Amit Peleg , Naman Deep Singh , Matthias Hein

Contrastive Language-Image Pre-training (CLIP) stands as one of the most effective and scalable methods for training transferable vision models using paired image and text data. CLIP models are trained using contrastive loss, which…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Lijie Fan , Dilip Krishnan , Phillip Isola , Dina Katabi , Yonglong Tian

Recent advancements in large-scale pre-training of visual-language models on paired image-text data have demonstrated impressive generalization capabilities for zero-shot tasks. Building on this success, efforts have been made to adapt…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Shahzad Ahmad , Sukalpa Chanda , Yogesh S Rawat

Continual learning aims to enable a model to incrementally learn knowledge from sequentially arrived data. Previous works adopt the conventional classification architecture, which consists of a feature extractor and a classifier. The…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Runqi Wang , Xiaoyue Duan , Guoliang Kang , Jianzhuang Liu , Shaohui Lin , Songcen Xu , Jinhu Lv , Baochang Zhang

Vision-language models (VLMs), such as CLIP, have shown strong generalization under zero-shot settings, yet adapting them to downstream tasks with limited supervision remains a significant challenge. Existing multi-modal prompt learning…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Silin Cheng , Kai Han

Pre-training vision-language models with contrastive objectives has shown promising results that are both scalable to large uncurated datasets and transferable to many downstream applications. Some following works have targeted to improve…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Janghyeon Lee , Jongsuk Kim , Hyounguk Shon , Bumsoo Kim , Seung Hwan Kim , Honglak Lee , Junmo Kim

Contrastive Language-Image Pretraining (CLIP) has gained popularity for its remarkable zero-shot capacity. Recent research has focused on developing efficient fine-tuning methods, such as prompt learning and adapter, to enhance CLIP's…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Zhengbo Wang , Jian Liang , Lijun Sheng , Ran He , Zilei Wang , Tieniu Tan

Large pre-trained vision-language (VL) models have shown significant promise in adapting to various downstream tasks. However, fine-tuning the entire network is challenging due to the massive number of model parameters. To address this…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Jingchen Sun , Jiayu Qin , Zihao Lin , Changyou Chen

In the field of design patent analysis, traditional tasks such as patent classification and patent image retrieval heavily depend on the image data. However, patent images -- typically consisting of sketches with abstract and structural…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 Zhu Wang , Homaira Huda Shomee , Sathya N. Ravi , Sourav Medya

We present a comprehensive experimental study on pretrained feature extractors for visual out-of-distribution (OOD) detection, focusing on adapting contrastive language-image pretrained (CLIP) models. Without fine-tuning on the training…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Nikolas Adaloglou , Felix Michels , Tim Kaiser , Markus Kollmann