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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…

计算机视觉与模式识别 · 计算机科学 2023-06-29 Lama Alssum , Juan Leon Alcazar , Merey Ramazanova , Chen Zhao , Bernard Ghanem

Existing person video generation methods either lack the flexibility in controlling both the appearance and motion, or fail to preserve detailed appearance and temporal consistency. In this paper, we tackle the problem of motion transfer…

计算机视觉与模式识别 · 计算机科学 2019-08-13 Kun Cheng , Hao-Zhi Huang , Chun Yuan , Lingyiqing Zhou , Wei Liu

In this paper, we introduce Coarse-Fine Networks, a two-stream architecture which benefits from different abstractions of temporal resolution to learn better video representations for long-term motion. Traditional Video models process…

计算机视觉与模式识别 · 计算机科学 2021-04-02 Kumara Kahatapitiya , Michael S. Ryoo

Current approaches for activity recognition often ignore constraints on computational resources: 1) they rely on extensive feature computation to obtain rich descriptors on all frames, and 2) they assume batch-mode access to the entire test…

计算机视觉与模式识别 · 计算机科学 2016-04-05 Yu-Chuan Su , Kristen Grauman

Temporal action segmentation is a topic of increasing interest, however, annotating each frame in a video is cumbersome and costly. Weakly supervised approaches therefore aim at learning temporal action segmentation from videos that are…

计算机视觉与模式识别 · 计算机科学 2020-04-01 Mohsen Fayyaz , Juergen Gall

Given an untrimmed video, repetitive actions counting aims to estimate the number of repetitions of class-agnostic actions. To handle the various length of videos and repetitive actions, also optimization challenges in end-to-end video…

计算机视觉与模式识别 · 计算机科学 2023-05-25 Jianing Li , Bowen Chen , Zhiyong Wang , Honghai Liu

Video frame interpolation, which aims to synthesize non-exist intermediate frames in a video sequence, is an important research topic in computer vision. Existing video frame interpolation methods have achieved remarkable results under…

计算机视觉与模式识别 · 计算机科学 2021-12-03 Youjian Zhang , Chaoyue Wang , Dacheng Tao

Online temporal action localization from an untrimmed video stream is a challenging problem in computer vision. It is challenging because of i) in an untrimmed video stream, more than one action instance may appear, including background…

计算机视觉与模式识别 · 计算机科学 2020-03-18 Da-Hye Yoon , Nam-Gyu Cho , Seong-Whan Lee

In this paper, we propose to learn temporal embeddings of video frames for complex video analysis. Large quantities of unlabeled video data can be easily obtained from the Internet. These videos possess the implicit weak label that they are…

计算机视觉与模式识别 · 计算机科学 2015-05-05 Vignesh Ramanathan , Kevin Tang , Greg Mori , Li Fei-Fei

This paper presents a method for capturing high-speed video using an asynchronous camera array. Our method sequentially fires each sensor in a camera array with a small time offset and assembles captured frames into a high-speed video…

计算机视觉与模式识别 · 计算机科学 2019-01-21 Si Lu

The task of temporally detecting and segmenting actions in untrimmed videos has seen an increased attention recently. One problem in this context arises from the need to define and label action boundaries to create annotations for training…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Anna Kukleva , Hilde Kuehne , Fadime Sener , Juergen Gall

Detecting salient objects from a video requires exploiting both spatial and temporal knowledge included in the video. We propose a novel region-based multiscale spatiotemporal saliency detection method for videos, where static features and…

计算机视觉与模式识别 · 计算机科学 2017-08-07 Trung-Nghia Le , Akihiro Sugimoto

Understanding human actions in wild videos is an important task with a broad range of applications. In this paper we propose a novel approach named Hierarchical Attention Network (HAN), which enables to incorporate static spatial…

计算机视觉与模式识别 · 计算机科学 2016-07-22 Yilin Wang , Suhang Wang , Jiliang Tang , Neil O'Hare , Yi Chang , Baoxin Li

Despite great success has been achieved in activity analysis, it still has many challenges. Most existing work in activity recognition pay more attention to design efficient architecture or video sampling strategy. However, due to the…

计算机视觉与模式识别 · 计算机科学 2019-08-28 Jingran Zhang , Fumin Shen , Xing Xu , Heng Tao Shen

We address the problem of temporal localization of repetitive activities in a video, i.e., the problem of identifying all segments of a video that contain some sort of repetitive or periodic motion. To do so, the proposed method represents…

计算机视觉与模式识别 · 计算机科学 2019-10-15 Giorgos Karvounas , Iason Oikonomidis , Antonis Argyros

Video action recognition has made significant strides, but challenges remain in effectively using both spatial and temporal information. While existing methods often focus on either spatial features (e.g., object appearance) or temporal…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Huilin Chen , Lei Wang , Yifan Chen , Tom Gedeon , Piotr Koniusz

Although mobile robots have on-board sensors to perform navigation, their efficiency in completing paths can be enhanced by planning to avoid human interaction. Infrastructure cameras can capture human activity continuously for the purpose…

机器人学 · 计算机科学 2024-03-28 Lawrence O'Gorman

Real-time video analysis remains a challenging problem in computer vision, requiring efficient processing of both spatial and temporal information while maintaining computational efficiency. Existing approaches often struggle to balance…

计算机视觉与模式识别 · 计算机科学 2025-07-31 Shahla John

For visual estimation of optical flow, a crucial function for many vision tasks, unsupervised learning, using the supervision of view synthesis has emerged as a promising alternative to supervised methods, since ground-truth flow is not…

计算机视觉与模式识别 · 计算机科学 2023-04-17 Zitang Sun , Shin'ya Nishida , Zhengbo Luo

Video skimming, also known as dynamic video summarization, generates a temporally abridged version of a given video. Skimming can be achieved by identifying significant components either in uni-modal or multi-modal features extracted from…

计算机视觉与模式识别 · 计算机科学 2019-10-01 Vivekraj V. K. , Debashis Sen , Balasubramanian Raman