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Concept-based video representation has proven to be effective in complex event detection. However, existing methods either manually design concepts or directly adopt concept libraries not specifically designed for events. In this paper, we…

多媒体 · 计算机科学 2014-04-01 Yin Cui , Dong Liu , Jiawei Chen , Shih-Fu Chang

Multimedia event detection is the task of detecting a specific event of interest in an user-generated video on websites. The most fundamental challenge facing this task lies in the enormously varying quality of the video as well as the…

计算机视觉与模式识别 · 计算机科学 2021-10-18 Minnan Luo , Xiaojun Chang , Chen Gong

In this paper, we examined the zero-shot activity recognition task with the usage of videos. We introduce an auto-encoder based model to construct a multimodal joint embedding space between the visual and textual manifolds. On the visual…

计算机视觉与模式识别 · 计算机科学 2020-02-07 Evin Pinar Ornek

Contrastive Language-Image Pretraining (CLIP) has demonstrated great zero-shot performance for matching images and text. However, it is still challenging to adapt vision-lanaguage pretrained models like CLIP to compositional image and text…

计算机视觉与模式识别 · 计算机科学 2024-04-16 Kenan Jiang , Xuehai He , Ruize Xu , Xin Eric Wang

This paper studies zero-shot object recognition using event camera data. Guided by CLIP, which is pre-trained on RGB images, existing approaches achieve zero-shot object recognition by optimizing embedding similarities between event data…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Yan Yang , Liyuan Pan , Dongxu Li , Liu Liu

Vision-language models like CLIP are widely used in zero-shot image classification due to their ability to understand various visual concepts and natural language descriptions. However, how to fully leverage CLIP's unprecedented human-like…

计算机视觉与模式识别 · 计算机科学 2024-03-19 Bang An , Sicheng Zhu , Michael-Andrei Panaitescu-Liess , Chaithanya Kumar Mummadi , Furong Huang

We consider the problem of zero-shot recognition: learning a visual classifier for a category with zero training examples, just using the word embedding of the category and its relationship to other categories, which visual data are…

计算机视觉与模式识别 · 计算机科学 2018-04-10 Xiaolong Wang , Yufei Ye , Abhinav Gupta

Object recognition systems usually require fully complete manually labeled training data to train the classifier. In this paper, we study the problem of object recognition where the training samples are missing during the classifier…

计算机视觉与模式识别 · 计算机科学 2014-10-15 Wai Lam Hoo , Chee Seng Chan

Most previous event extraction studies have relied heavily on features derived from annotated event mentions, thus cannot be applied to new event types without annotation effort. In this work, we take a fresh look at event extraction and…

计算与语言 · 计算机科学 2017-07-05 Lifu Huang , Heng Ji , Kyunghyun Cho , Clare R. Voss

The goal of this paper is to recognize actions in video without the need for examples. Different from traditional zero-shot approaches we do not demand the design and specification of attribute classifiers and class-to-attribute mappings to…

计算机视觉与模式识别 · 计算机科学 2015-10-26 Mihir Jain , Jan C. van Gemert , Thomas Mensink , Cees G. M. Snoek

This paper presents a novel approach to Zero-Shot Action Recognition. Recent works have explored the detection and classification of objects to obtain semantic information from videos with remarkable performance. Inspired by them, we…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Valter Estevam , Rayson Laroca , David Menotti , Helio Pedrini

Contemporary deep learning techniques have made image recognition a reasonably reliable technology. However training effective photo classifiers typically takes numerous examples which limits image recognition's scalability and…

计算机视觉与模式识别 · 计算机科学 2018-05-01 Conghui Hu , Da Li , Yi-Zhe Song , Tao Xiang , Timothy M. Hospedales

In this paper, we study the problem of recognizing compositional attribute-object concepts within the zero-shot learning (ZSL) framework. We propose an episode-based cross-attention (EpiCA) network which combines merits of cross-attention…

计算机视觉与模式识别 · 计算机科学 2021-07-13 Guangyue Xu , Parisa Kordjamshidi , Joyce Y. Chai

Event detection (ED), aiming to detect events from texts and categorize them, is vital to understanding actual happenings in real life. However, mainstream event detection models require high-quality expert human annotations of triggers,…

计算与语言 · 计算机科学 2022-08-23 Jiachen Zhao , Haiqin Yang

Recent advances in zero-shot and few-shot classification heavily rely on the success of pre-trained vision-language models (VLMs) such as CLIP. Due to a shortage of large-scale datasets, training such models for event camera data remains…

计算机视觉与模式识别 · 计算机科学 2023-11-20 Ziyi Wu , Xudong Liu , Igor Gilitschenski

Large-scale pre-trained models have demonstrated impressive performance in vision and language tasks within open-world scenarios. Due to the lack of comparable pre-trained models for 3D shapes, recent methods utilize language-image…

计算机视觉与模式识别 · 计算机科学 2024-09-12 Dan Song , Xinwei Fu , Ning Liu , Weizhi Nie , Wenhui Li , Lanjun Wang , You Yang , Anan Liu

Language models exhibit an emergent ability to learn a new task from a small number of input-output demonstrations. However, recent work shows that in-context learners largely rely on their pre-trained knowledge, such as the sentiment of…

计算与语言 · 计算机科学 2023-07-20 Michal Štefánik , Marek Kadlčík

Recent advancements in event-based zero-shot object recognition have demonstrated promising results. However, these methods heavily depend on extensive training and are inherently constrained by the characteristics of CLIP. To the best of…

计算机视觉与模式识别 · 计算机科学 2024-12-12 Zongyou Yu , Qiang Qu , Xiaoming Chen , Chen Wang

Video recognition models are typically trained on fixed taxonomies which are often too coarse, collapsing distinctions in object, manner or outcome under a single label. As tasks and definitions evolve, such models cannot accommodate…

计算机视觉与模式识别 · 计算机科学 2026-02-19 Kaiting Liu , Hazel Doughty

We focus on the problem of detecting traffic events in a surveillance scenario, including the detection of both vehicle actions and traffic collisions. Existing event detection systems are mostly learning-based and have achieved convincing…

计算机视觉与模式识别 · 计算机科学 2020-02-04 Lijun Yu , Peng Chen , Wenhe Liu , Guoliang Kang , Alexander G. Hauptmann