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Skeleton-based action recognition, which classifies human actions based on the coordinates of joints and their connectivity within skeleton data, is widely utilized in various scenarios. While Graph Convolutional Networks (GCNs) have been…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Jeonghyeok Do , Munchurl Kim

Effective processing of video input is essential for the recognition of temporally varying events such as human actions. Motivated by the often distinctive temporal characteristics of actions in either horizontal or vertical direction, we…

计算机视觉与模式识别 · 计算机科学 2020-06-24 Alexandros Stergiou , Ronald Poppe

In this work, we propose a novel transformation for events from an event camera that is equivariant to optical flow under convolutions in the 3-D spatiotemporal domain. Events are generated by changes in the image, which are typically due…

计算机视觉与模式识别 · 计算机科学 2019-02-20 Alex Zihao Zhu , Ziyun Wang , Kostas Daniilidis

Event cameras are dynamic vision sensors inspired by the biological retina, characterized by their high dynamic range, high temporal resolution, and low power consumption. These features make them capable of perceiving 3D environments even…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Hoonhee Cho , Jae-Young Kang , Kuk-Jin Yoon

In this paper, a novel video classification method is presented that aims to recognize different categories of third-person videos efficiently. Our motivation is to achieve a light model that could be trained with insufficient training…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Ali Javidani , Ahmad Mahmoudi-Aznaveh

Event cameras sense the intensity changes asynchronously and produce event streams with high dynamic range and low latency. This has inspired research endeavors utilizing events to guide the challenging video superresolution (VSR) task. In…

计算机视觉与模式识别 · 计算机科学 2023-03-30 Yunfan Lu , Zipeng Wang , Minjie Liu , Hongjian Wang , Lin Wang

Unsupervised multi-object scene decomposition is a fast-emerging problem in representation learning. Despite significant progress in static scenes, such models are unable to leverage important dynamic cues present in video. We propose a…

计算机视觉与模式识别 · 计算机科学 2020-06-29 Polina Zablotskaia , Edoardo A. Dominici , Leonid Sigal , Andreas M. Lehrmann

Understanding dynamic hand motions and actions from egocentric RGB videos is a fundamental yet challenging task due to self-occlusion and ambiguity. To address occlusion and ambiguity, we develop a transformer-based framework to exploit…

计算机视觉与模式识别 · 计算机科学 2023-03-30 Yilin Wen , Hao Pan , Lei Yang , Jia Pan , Taku Komura , Wenping Wang

Event cameras are bio-inspired sensors that perform well in HDR conditions and have high temporal resolution. However, different from traditional frame-based cameras, event cameras measure asynchronous pixel-level brightness changes and…

计算机视觉与模式识别 · 计算机科学 2022-03-09 Xin Peng , Yifu Wang , Ling Gao , Laurent Kneip

Event-based cameras are increasingly utilized in various applications, owing to their high temporal resolution and low power consumption. However, a fundamental challenge arises when deploying multiple such cameras: they operate on…

机器人学 · 计算机科学 2023-10-02 Wanli Xing , Shijie Lin , Guangze Zheng , Yanjun Du , Jia Pan

RGB cameras excel at capturing rich texture details with high spatial resolution, whereas event cameras offer exceptional temporal resolution and a high dynamic range (HDR). Leveraging their complementary strengths can substantially enhance…

计算机视觉与模式识别 · 计算机科学 2025-10-23 Yao Deng , Xian Zhong , Wenxuan Liu , Zhaofei Yu , Jingling Yuan , Tiejun Huang

This project aims to develop a robust video surveillance system, which can segment videos into smaller clips based on the detection of activities. It uses CCTV footage, for example, to record only major events-like the appearance of a…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Shahran Rahman Alve

Event cameras provide a number of benefits over traditional cameras, such as the ability to track incredibly fast motions, high dynamic range, and low power consumption. However, their application into computer vision problems, many of…

计算机视觉与模式识别 · 计算机科学 2019-12-20 Alex Zihao Zhu , Ziyun Wang , Kaung Khant , Kostas Daniilidis

This paper presents an unsupervised approach that leverages raw aerial videos to learn to estimate planar homographic transformation between consecutive video frames. Previous learning-based estimators work on pairs of images to estimate…

计算机视觉与模式识别 · 计算机科学 2023-04-07 Pu Li , Xiaobai Liu

Language-queried video actor segmentation aims to predict the pixel-level mask of the actor which performs the actions described by a natural language query in the target frames. Existing methods adopt 3D CNNs over the video clip as a…

计算机视觉与模式识别 · 计算机科学 2021-05-17 Tianrui Hui , Shaofei Huang , Si Liu , Zihan Ding , Guanbin Li , Wenguan Wang , Jizhong Han , Fei Wang

Multimodal ML models can process data in multiple modalities (e.g., video, images, audio, text) and are useful for video content analysis in a variety of problems (e.g., object detection, scene understanding). In this paper, we focus on the…

计算机视觉与模式识别 · 计算机科学 2020-06-09 Palash Goyal , Saurabh Sahu , Shalini Ghosh , Chul Lee

Detecting and recognizing human action in videos with crowded scenes is a challenging problem due to the complex environment and diversity events. Prior works always fail to deal with this problem in two aspects: (1) lacking utilizing…

计算机视觉与模式识别 · 计算机科学 2020-10-19 Li Yuan , Yichen Zhou , Shuning Chang , Ziyuan Huang , Yunpeng Chen , Xuecheng Nie , Tao Wang , Jiashi Feng , Shuicheng Yan

Skeleton-based action recognition relies on the extraction of spatial-temporal topological information. Hypergraphs can establish prior unnatural dependencies for the skeleton. However, the existing methods only focus on the construction of…

计算机视觉与模式识别 · 计算机科学 2023-02-20 Shengqin Wang , Yongji Zhang , Hong Qi , Minghao Zhao , Yu Jiang

Spatiotemporal and motion features are two complementary and crucial information for video action recognition. Recent state-of-the-art methods adopt a 3D CNN stream to learn spatiotemporal features and another flow stream to learn motion…

计算机视觉与模式识别 · 计算机科学 2019-08-19 Boyuan Jiang , Mengmeng Wang , Weihao Gan , Wei Wu , Junjie Yan

The correlation holography reconstructs 3D objects as a distribution of two-point correlation of the random field detected by two dimensional detector arrays. Here, we describe a hybrid method, a combination of optical and computational…

光学 · 物理学 2017-08-02 Rakesh Kumar Singh