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Most recent work on vision-based human activity recognition (HAR) focuses on designing complex deep learning models for the task. In so doing, there is a requirement for large datasets to be collected. As acquiring and processing large…

Computer Vision and Pattern Recognition · Computer Science 2020-04-30 Bruce X. B. Yu , Yan Liu , Keith C. C. Chan

Considering that words with different characteristic in the text have different importance for classification, grouping them together separately can strengthen the semantic expression of each part. Thus we propose a new text representation…

Computation and Language · Computer Science 2019-06-19 Xiaoye Tan , Rui Yan , Chongyang Tao , Mingrui Wu

Large scale vision and language models can achieve impressive zero-shot recognition performance by mapping class specific text queries to image content. Two distinct challenges that remain however, are high sensitivity to the choice of…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Sarah Parisot , Yongxin Yang , Steven McDonagh

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

Referring expressions are natural language descriptions that identify a particular object within a scene and are widely used in our daily conversations. In this work, we focus on segmenting the object in an image specified by a referring…

Computer Vision and Pattern Recognition · Computer Science 2019-10-11 Yi-Wen Chen , Yi-Hsuan Tsai , Tiantian Wang , Yen-Yu Lin , Ming-Hsuan Yang

A number of computer vision tasks exploit a succinct representation of the visual content in the form of sets of local features. Given an input image, feature extraction algorithms identify a set of keypoints and assign to each of them a…

Computer Vision and Pattern Recognition · Computer Science 2016-11-18 Luca Baroffio , Matteo Cesana , Alessandro Redondi , Marco Tagliasacchi

Automated video-based assessment of surgical skills is a promising task in assisting young surgical trainees, especially in poor-resource areas. Existing works often resort to a CNN-LSTM joint framework that models long-term relationships…

Computer Vision and Pattern Recognition · Computer Science 2022-08-05 Zhenqiang Li , Lin Gu , Weimin Wang , Ryosuke Nakamura , Yoichi Sato

In recent years, interest in synthetic data has grown, particularly in the context of pre-training the image modality to support a range of computer vision tasks, including object classification, medical imaging etc. Previous work has…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Davyd Svyezhentsev , George Retsinas , Petros Maragos

We investigate the importance of parts for the tasks of action and attribute classification. We develop a part-based approach by leveraging convolutional network features inspired by recent advances in computer vision. Our part detectors…

Computer Vision and Pattern Recognition · Computer Science 2015-05-07 Georgia Gkioxari , Ross Girshick , Jitendra Malik

Understanding human actions in visual data is tied to advances in complementary research areas including object recognition, human dynamics, domain adaptation and semantic segmentation. Over the last decade, human action analysis evolved…

Computer Vision and Pattern Recognition · Computer Science 2017-02-02 Samitha Herath , Mehrtash Harandi , Fatih Porikli

Massive classification, a classification task defined over a vast number of classes (hundreds of thousands or even millions), has become an essential part of many real-world systems, such as face recognition. Existing methods, including the…

Computer Vision and Pattern Recognition · Computer Science 2018-01-08 Xingcheng Zhang , Lei Yang , Junjie Yan , Dahua Lin

Generating descriptions for videos has many applications including assisting blind people and human-robot interaction. The recent advances in image captioning as well as the release of large-scale movie description datasets such as MPII…

Computer Vision and Pattern Recognition · Computer Science 2015-06-05 Anna Rohrbach , Marcus Rohrbach , Bernt Schiele

A primary challenge faced in few-shot action recognition is inadequate video data for training. To address this issue, current methods in this field mainly focus on devising algorithms at the feature level while little attention is paid to…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Huabin Liu , Weixian Lv , John See , Weiyao Lin

Learning from one or few visual examples is one of the key capabilities of humans since early infancy, but is still a significant challenge for modern AI systems. While considerable progress has been achieved in few-shot learning from a few…

Computer Vision and Pattern Recognition · Computer Science 2020-01-23 Eli Schwartz , Leonid Karlinsky , Rogerio Feris , Raja Giryes , Alex M. Bronstein

Due to the rapid temporal and fine-grained nature of complex human assembly atomic actions, traditional action segmentation approaches requiring the spatial (and often temporal) down sampling of video frames often loose vital fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Matthew Kent Myers , Nick Wright , Stephen McGough , Nicholas Martin

We present paired learning and inference algorithms for significantly reducing computation and increasing speed of the vector dot products in the classifiers that are at the heart of many NLP components. This is accomplished by partitioning…

Computation and Language · Computer Science 2014-12-23 Emma Strubell , Luke Vilnis , Andrew McCallum

In recent years, video action recognition, as a fundamental task in the field of video understanding, has been deeply explored by numerous researchers.Most traditional video action recognition methods typically involve converting videos…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Junlin Chen , Chengcheng Xu , Yangfan Xu , Jian Yang , Jun Li , Zhiping Shi

Scene, as the crucial unit of storytelling in movies, contains complex activities of actors and their interactions in a physical environment. Identifying the composition of scenes serves as a critical step towards semantic understanding of…

Computer Vision and Pattern Recognition · Computer Science 2020-04-29 Anyi Rao , Linning Xu , Yu Xiong , Guodong Xu , Qingqiu Huang , Bolei Zhou , Dahua Lin

Modern video summarization methods are based on deep neural networks that require a large amount of annotated data for training. However, existing datasets for video summarization are small-scale, easily leading to over-fitting of the deep…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Li Haopeng , Ke Qiuhong , Gong Mingming , Tom Drummond

Zero-resource word segmentation and clustering systems aim to tokenise speech into word-like units without access to text labels. Despite progress, the induced lexicons are still far from perfect. In an idealised setting with gold word…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-28 Danel Slabbert , Simon Malan , Herman Kamper