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Action recognition with 3D skeleton sequences is becoming popular due to its speed and robustness. The recently proposed Convolutional Neural Networks (CNN) based methods have shown good performance in learning spatio-temporal…

计算机视觉与模式识别 · 计算机科学 2018-04-12 Zhengyuan Yang , Yuncheng Li , Jianchao Yang , Jiebo Luo

Micro-expressions serve as essential cues for understanding individuals' genuine emotional states. Recognizing micro-expressions attracts increasing research attention due to its various applications in fields such as business negotiation…

计算机视觉与模式识别 · 计算机科学 2024-06-14 Fengyuan Zhang , Zhaopei Huang , Xinjie Zhang , Qin Jin

Egocentric action anticipation aims to predict the future actions the camera wearer will perform from the observation of the past. While predictions about the future should be available before the predicted events take place, most…

计算机视觉与模式识别 · 计算机科学 2023-06-30 Antonino Furnari , Giovanni Maria Farinella

We present Ego-Only, the first approach that enables state-of-the-art action detection on egocentric (first-person) videos without any form of exocentric (third-person) transferring. Despite the content and appearance gap separating the two…

计算机视觉与模式识别 · 计算机科学 2023-05-23 Huiyu Wang , Mitesh Kumar Singh , Lorenzo Torresani

Learning-based, single-view depth estimation often generalizes poorly to unseen datasets. While learning-based, two-frame depth estimation solves this problem to some extent by learning to match features across frames, it performs poorly at…

计算机视觉与模式识别 · 计算机科学 2018-05-18 Rui Wang , Jan-Michael Frahm , Stephen M. Pizer

Typical human actions last several seconds and exhibit characteristic spatio-temporal structure. Recent methods attempt to capture this structure and learn action representations with convolutional neural networks. Such representations,…

计算机视觉与模式识别 · 计算机科学 2017-06-05 Gül Varol , Ivan Laptev , Cordelia Schmid

Classifying the behavior of humans or animals from videos is important in biomedical fields for understanding brain function and response to stimuli. Action recognition, classifying activities performed by one or more subjects in a trimmed…

计算机视觉与模式识别 · 计算机科学 2023-01-18 Michael Perez , Corey Toler-Franklin

Effective extraction of temporal patterns is crucial for the recognition of temporally varying actions in video. We argue that the fixed-sized spatio-temporal convolution kernels used in convolutional neural networks (CNNs) can be improved…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Alexandros Stergiou , Ronald Poppe

We present a method to analyze images taken from a passive egocentric wearable camera along with the contextual information, such as time and day of week, to learn and predict everyday activities of an individual. We collected a dataset of…

计算机视觉与模式识别 · 计算机科学 2015-10-07 Daniel Castro , Steven Hickson , Vinay Bettadapura , Edison Thomaz , Gregory Abowd , Henrik Christensen , Irfan Essa

Time series classification is a widely studied problem in the field of time series data mining. Previous research has predominantly focused on scenarios where relevant or foreground subsequences have already been extracted, with each…

Anticipating actions before they are executed is crucial for a wide range of practical applications, including autonomous driving and robotics. In this paper, we study the egocentric action anticipation task, which predicts future action…

计算机视觉与模式识别 · 计算机科学 2021-01-20 Yu Wu , Linchao Zhu , Xiaohan Wang , Yi Yang , Fei Wu

Activity recognition from long unstructured egocentric photo-streams has several applications in assistive technology such as health monitoring and frailty detection, just to name a few. However, one of its main technical challenges is to…

计算机视觉与模式识别 · 计算机科学 2017-08-29 Alejandro Cartas , Mariella Dimiccoli , Petia Radeva

Convolutional neural networks with spatio-temporal 3D kernels (3D CNNs) have an ability to directly extract spatio-temporal features from videos for action recognition. Although the 3D kernels tend to overfit because of a large number of…

计算机视觉与模式识别 · 计算机科学 2017-08-28 Kensho Hara , Hirokatsu Kataoka , Yutaka Satoh

We bring together ideas from recent work on feature design for egocentric action recognition under one framework by exploring the use of deep convolutional neural networks (CNN). Recent work has shown that features such as hand appearance,…

计算机视觉与模式识别 · 计算机科学 2016-05-13 Minghuang Ma , Haoqi Fan , Kris M. Kitani

Egocentric vision consists in acquiring images along the day from a first person point-of-view using wearable cameras. The automatic analysis of this information allows to discover daily patterns for improving the quality of life of the…

计算机视觉与模式识别 · 计算机科学 2017-11-10 Marc Bolaños , Álvaro Peris , Francisco Casacuberta , Sergi Soler , Petia Radeva

Emotion recognition based on EEG has become an active research area. As one of the machine learning models, CNN has been utilized to solve diverse problems including issues in this domain. In this work, a study of CNN and its spatiotemporal…

机器学习 · 计算机科学 2019-10-23 Panayu Keelawat , Nattapong Thammasan , Masayuki Numao , Boonserm Kijsirikul

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

Despite the fact that notable improvements have been made recently in the field of feature extraction and classification, human action recognition is still challenging, especially in images, in which, unlike videos, there is no motion.…

计算机视觉与模式识别 · 计算机科学 2020-03-24 Sina Mohammadi , Sina Ghofrani Majelan , Shahriar B. Shokouhi

Skeleton-based action recognition methods are limited by the semantic extraction of spatio-temporal skeletal maps. However, current methods have difficulty in effectively combining features from both temporal and spatial graph dimensions…

计算机视觉与模式识别 · 计算机科学 2022-08-09 Shengqin Wang , Yongji Zhang , Minghao Zhao , Hong Qi , Kai Wang , Fenglin Wei , Yu Jiang

Recently, various deep neural networks have been applied to classify electroencephalogram (EEG) signal. EEG is a brain signal that can be acquired in a non-invasive way and has a high temporal resolution. It can be used to decode the…

神经与进化计算 · 计算机科学 2021-07-16 Ji-Seon Bang , Seong-Whan Lee