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Zero-shot action recognition is challenging due to the semantic gap between seen and unseen classes. We present a novel framework that enhances CLIP with disentangled embeddings and semantic-guided interaction. A Motion Separation Module…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Yiming Wang , Frederick W. B. Li , Jingyun Wang

Adopting contrastive image-text pretrained models like CLIP towards video classification has gained attention due to its cost-effectiveness and competitive performance. However, recent works in this area face a trade-off. Finetuning the…

Computer Vision and Pattern Recognition · Computer Science 2023-04-10 Syed Talal Wasim , Muzammal Naseer , Salman Khan , Fahad Shahbaz Khan , Mubarak Shah

Language-vision models like CLIP have made significant strides in vision tasks, such as zero-shot image classification (ZSIC). However, generating specific and expressive visual descriptions remains challenging; descriptions produced by…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Michael Ogezi , Bradley Hauer , Grzegorz Kondrak

The Contrastive Language-Image Pre-training (CLIP) has recently shown remarkable generalization on "zero-shot" training and has applied to many downstream tasks. We explore the adaptation of CLIP to achieve a more efficient and generalized…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Qiang Wang , Junlong Du , Ke Yan , Shouhong Ding

Spatio-temporal action detection encompasses the tasks of localizing and classifying individual actions within a video. Recent works aim to enhance this process by incorporating interaction modeling, which captures the relationship between…

Computer Vision and Pattern Recognition · Computer Science 2024-12-06 Wei-Jhe Huang , Min-Hung Chen , Shang-Hong Lai

Zero-shot skeleton-based action recognition aims to recognize unseen actions by transferring knowledge from seen categories through semantic descriptions. Most existing methods typically align skeleton features with textual embeddings…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Ning Wang , Tieyue Wu , Naeha Sharif , Farid Boussaid , Guangming Zhu , Lin Mei , Mohammed Bennamoun , zhang liang

The goal of spatial-temporal action detection is to determine the time and place where each person's action occurs in a video and classify the corresponding action category. Most of the existing methods adopt fully-supervised learning,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-21 Wei-Jhe Huang , Jheng-Hsien Yeh , Min-Hung Chen , Gueter Josmy Faure , Shang-Hong Lai

Vision-Language Models (VLMs) have demonstrated impressive capabilities in zero-shot action recognition by learning to associate video embeddings with class embeddings. However, a significant challenge arises when relying solely on action…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Yehna Kim , Young-Eun Kim , Seong-Whan Lee

The canonical approach to video action recognition dictates a neural model to do a classic and standard 1-of-N majority vote task. They are trained to predict a fixed set of predefined categories, limiting their transferable ability on new…

Computer Vision and Pattern Recognition · Computer Science 2021-09-20 Mengmeng Wang , Jiazheng Xing , Yong Liu

Few-shot action recognition in videos is challenging for its lack of supervision and difficulty in generalizing to unseen actions. To address this task, we propose a simple yet effective method, called knowledge prompting, which leverages…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Yuheng Shi , Xinxiao Wu , Hanxi Lin

Pre-trained on tremendous image-text pairs, vision-language models like CLIP have demonstrated promising zero-shot generalization across numerous image-based tasks. However, extending these capabilities to video tasks remains challenging…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Zichen Liu , Kunlun Xu , Bing Su , Xu Zou , Yuxin Peng , Jiahuan Zhou

Currently, low-light conditions present a significant challenge for machine cognition. In this paper, rather than optimizing models by assuming that human and machine cognition are correlated, we use zero-reference low-light enhancement to…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Igor Morawski , Kai He , Shusil Dangi , Winston H. Hsu

Recently, CLIP has been applied to pixel-level zero-shot learning tasks via a two-stage scheme. The general idea is to first generate class-agnostic region proposals and then feed the cropped proposal regions to CLIP to utilize its…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Ziqin Zhou , Bowen Zhang , Yinjie Lei , Lingqiao Liu , Yifan Liu

Most existing semantic communication (SemCom) systems use deep joint source-channel coding (DeepJSCC) to encode task-specific semantics in a goal-oriented manner. However, their reliance on predefined tasks and datasets significantly limits…

Signal Processing · Electrical Eng. & Systems 2025-05-30 Jiangjing Hu , Haotian Wu , Wenjing Zhang , Fengyu Wang , Wenjun Xu , Hui Gao , Deniz Gündüz

Zero-shot video captioning aims to generate sentences for describing videos without training the model on video-text pairs, which remains underexplored. Existing zero-shot image captioning methods typically adopt a text-only training…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Zeyu Pan , Ping Li , Wenxiao Wang

CLIP (Contrastive Language-Image Pre-Training) has shown remarkable zero-shot transfer capabilities in cross-modal correlation tasks such as visual classification and image retrieval. However, its performance in cross-modal generation tasks…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Junyang Wang , Yi Zhang , Ming Yan , Ji Zhang , Jitao Sang

The application of zero-shot learning in computer vision has been revolutionized by the use of image-text matching models. The most notable example, CLIP, has been widely used for both zero-shot classification and guiding generative models…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Roni Paiss , Hila Chefer , Lior Wolf

Exploring open-vocabulary video action recognition is a promising venture, which aims to recognize previously unseen actions within any arbitrary set of categories. Existing methods typically adapt pretrained image-text models to the video…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Chengyou Jia , Minnan Luo , Xiaojun Chang , Zhuohang Dang , Mingfei Han , Mengmeng Wang , Guang Dai , Sizhe Dang , Jingdong Wang

CLIP has demonstrated strong generalization in visual domains through natural language supervision, even for video action recognition. However, most existing approaches that adapt CLIP for action recognition have primarily focused on…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Hyo Jin Jon , Longbin Jin , Eun Yi Kim

Large-scale vision-language models such as CLIP have achieved remarkable success in zero-shot image recognition, yet their predictions remain largely opaque to human understanding. In contrast, Concept Bottleneck Models provide…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Onat Ozdemir , Anders Christensen , Stephan Alaniz , Zeynep Akata , Emre Akbas
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