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Taking inspiration from physical motion, we present a new self-supervised dynamics learning strategy for videos: Video Time-Differentiation for Instance Discrimination (ViDiDi). ViDiDi is a simple and data-efficient strategy, readily…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Siyi Chen , Minkyu Choi , Zesen Zhao , Kuan Han , Qing Qu , Zhongming Liu

Human actions in videos are 3D signals. However, there are a few methods available for multiple human action recognition. For long videos, it's difficult to search within a video for a specific action and/or person. For that, this paper…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Noor Almaadeed , Omar Elharrouss , Somaya Al-Maadeed , Ahmed Bouridane , Azeddine Beghdadi

In real-world visual recognition problems, the assumption that the training data (source domain) and test data (target domain) are sampled from the same distribution is often violated. This is known as the domain adaptation problem. In this…

Computer Vision and Pattern Recognition · Computer Science 2018-04-17 Hongyu Xu , Jingjing Zheng , Azadeh Alavi , Rama Chellappa

We study the domain adaptation task for action recognition, namely domain adaptive action recognition, which aims to effectively transfer action recognition power from a label-sufficient source domain to a label-free target domain. Since…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Kun-Yu Lin , Jiaming Zhou , Wei-Shi Zheng

We investigate a human-like interpretable model of video understanding. Humans recognise complex activities in video by recognising critical spatio-temporal relations among explicitly recognised objects and parts, for example, an object…

Computer Vision and Pattern Recognition · Computer Science 2024-09-23 Anastasia Anichenko , Frank Guerin , Andrew Gilbert

Understanding visual differences between dynamic scenes requires the comparative perception of compositional, spatial, and temporal changes--a capability that remains underexplored in existing vision-language systems. While prior work on…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Jiangtao Wu , Shihao Li , Zhaozhou Bian , Jialu Chen , Runzhe Wen , An Ping , Yiwen He , Jiakai Wang , Yuanxing Zhang , Jiaheng Liu

Achieving controllable character animation that meets studio-grade standards remains challenging despite recent progress. Existing approaches can transfer motion from a driving video to a reference image, but often fail to preserve…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Wenhao Yan , Sheng Ye , Zhuoyi Yang , Jiayan Teng , ZhenHui Dong , Kairui Wen , Xiaotao Gu , Yong-Jin Liu , Jie Tang

The recognition of human actions in video streams is a challenging task in computer vision, with cardinal applications in e.g. brain-computer interface and surveillance. Deep learning has shown remarkable results recently, but can be found…

Neural and Evolutionary Computing · Computer Science 2020-04-07 Piotr Antonik , Nicolas Marsal , Daniel Brunner , Damien Rontani

We focus on bridging domain discrepancy in lane detection among different scenarios to greatly reduce extra annotation and re-training costs for autonomous driving. Critical factors hinder the performance improvement of cross-domain lane…

Computer Vision and Pattern Recognition · Computer Science 2022-11-10 Chenguang Li , Boheng Zhang , Jia Shi , Guangliang Cheng

Class-incremental learning is one of the most important settings for the study of Continual Learning, as it closely resembles real-world application scenarios. With constrained memory sizes, catastrophic forgetting arises as the number of…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Lama Alssum , Juan Leon Alcazar , Merey Ramazanova , Chen Zhao , Bernard Ghanem

This paper addresses a new problem of weakly-supervised online action segmentation in instructional videos. We present a framework to segment streaming videos online at test time using Dynamic Programming and show its advantages over greedy…

Computer Vision and Pattern Recognition · Computer Science 2022-03-28 Reza Ghoddoosian , Isht Dwivedi , Nakul Agarwal , Chiho Choi , Behzad Dariush

For future learning systems, incremental learning is desirable because it allows for: efficient resource usage by eliminating the need to retrain from scratch at the arrival of new data; reduced memory usage by preventing or limiting the…

Machine Learning · Computer Science 2022-10-12 Marc Masana , Xialei Liu , Bartlomiej Twardowski , Mikel Menta , Andrew D. Bagdanov , Joost van de Weijer

Action recognition has long been a fundamental and intriguing problem in artificial intelligence. The task is challenging due to the high dimensionality nature of an action, as well as the subtle motion details to be considered. Current…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Yuheng Yang , Haipeng Chen , Zhenguang Liu , Yingda Lyu , Beibei Zhang , Shuang Wu , Zhibo Wang , Kui Ren

Person re-identification (re-ID) is a very active area of research in computer vision, due to the role it plays in video surveillance. Currently, most methods only address the task of matching between colour images. However, in poorly-lit…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Nima Mohammadi Meshky , Sara Iodice , Krystian Mikolajczyk

Action recognition models have achieved promising results in understanding instructional videos. However, they often rely on dominant, dataset-specific action sequences rather than true video comprehension, a problem that we define as…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Joochan Kim , Minjoon Jung , Byoung-Tak Zhang

Continual learning aims to acquire new knowledge while retaining past information. Class-incremental learning (CIL) presents a challenging scenario where classes are introduced sequentially. For video data, the task becomes more complex…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Tieyuan Chen , Huabin Liu , Chern Hong Lim , John See , Xing Gao , Junhui Hou , Weiyao Lin

Video-based person re-identification (ReID) is a challenging problem, where some video tracks of people across non-overlapping cameras are available for matching. Feature aggregation from a video track is a key step for video-based person…

Computer Vision and Pattern Recognition · Computer Science 2019-04-30 Xingyu Liao , Lingxiao He , Zhouwang Yang , Chi Zhang

Over the last few years, Unsupervised Domain Adaptation (UDA) techniques have acquired remarkable importance and popularity in computer vision. However, when compared to the extensive literature available for images, the field of videos is…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Victor G. Turrisi da Costa , Giacomo Zara , Paolo Rota , Thiago Oliveira-Santos , Nicu Sebe , Vittorio Murino , Elisa Ricci

Significant advancements have been made in single label incremental learning (SLCIL),yet the more practical and challenging multi label class incremental learning (MLCIL) remains understudied. Recently,visual language models such as CLIP…

Computer Vision and Pattern Recognition · Computer Science 2025-01-06 Haifeng Zhao , Yuguang Jin , Leilei Ma

To achieve good performance in face recognition, a large scale training dataset is usually required. A simple yet effective way to improve recognition performance is to use a dataset as large as possible by combining multiple datasets in…

Computer Vision and Pattern Recognition · Computer Science 2021-01-15 Gaoang Wang , Lin Chen , Tianqiang Liu , Mingwei He , Jiebo Luo