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The task of action recognition or action detection involves analyzing videos and determining what action or motion is being performed. The primary subject of these videos are predominantly humans performing some action. However, this…

Computer Vision and Pattern Recognition · Computer Science 2019-01-29 Amlaan Bhoi

This paper presents a new large-scale dataset for recognition and temporal localization of human actions collected from Web videos. We refer to it as HACS (Human Action Clips and Segments). We leverage both consensus and disagreement among…

Computer Vision and Pattern Recognition · Computer Science 2019-09-05 Hang Zhao , Antonio Torralba , Lorenzo Torresani , Zhicheng Yan

Human Action Recognition (HAR) is a very crucial task in computer vision. It helps to carry out a series of downstream tasks, like understanding human behaviors. Due to the complexity of human behaviors, many highly valuable behaviors are…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Hongwu Li , Zhenliang Zhang , Wei Wang

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…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Ali Javidani , Ahmad Mahmoudi-Aznaveh

Human Activity Recognition (HAR) simply refers to the capacity of a machine to perceive human actions. HAR is a prominent application of advanced Machine Learning and Artificial Intelligence techniques that utilize computer vision to…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Niloy Sikder , Md. Sanaullah Chowdhury , Abu Shamim Mohammad Arif , Abdullah-Al Nahid

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

Prior works on text-based video moment localization focus on temporally grounding the textual query in an untrimmed video. These works assume that the relevant video is already known and attempt to localize the moment on that relevant video…

Computer Vision and Pattern Recognition · Computer Science 2021-11-10 Sudipta Paul , Niluthpol Chowdhury Mithun , Amit K. Roy-Chowdhury

Although various image-based domain adaptation (DA) techniques have been proposed in recent years, domain shift in videos is still not well-explored. Most previous works only evaluate performance on small-scale datasets which are saturated.…

Computer Vision and Pattern Recognition · Computer Science 2019-06-10 Min-Hung Chen , Zsolt Kira , Ghassan AlRegib

In highway scenarios, an alert human driver will typically anticipate early cut-in/cut-out maneuvers of surrounding vehicles using visual cues mainly. Autonomous vehicles must anticipate these situations at an early stage too, to increase…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Mahdi Biparva , David Fernández-Llorca , Rubén Izquierdo-Gonzalo , John K. Tsotsos

Human activities are naturally structured as hierarchies unrolled over time. For action prediction, temporal relations in event sequences are widely exploited by current methods while their semantic coherence across different levels of…

Computer Vision and Pattern Recognition · Computer Science 2020-08-24 Romero Morais , Vuong Le , Truyen Tran , Svetha Venkatesh

Most action recognition methods base on a) a late aggregation of frame level CNN features using average pooling, max pooling, or RNN, among others, or b) spatio-temporal aggregation via 3D convolutions. The first assume independence among…

Computer Vision and Pattern Recognition · Computer Science 2019-05-30 Swathikiran Sudhakaran , Sergio Escalera , Oswald Lanz

In human vision objects and their parts can be visually recognized from purely spatial or purely temporal information but the mechanisms integrating space and time are poorly understood. Here we show that human visual recognition of objects…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Guy Ben-Yosef , Gabriel Kreiman , Shimon Ullman

Human activity, which usually consists of several actions, generally covers interactions among persons and or objects. In particular, human actions involve certain spatial and temporal relationships, are the components of more complicated…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Zhenyu Liu , Yaqiang Yao , Yan Liu , Yuening Zhu , Zhenchao Tao , Lei Wang , Yuhong Feng

Action recognition in videos is a challenging task due to the complexity of the spatio-temporal patterns to model and the difficulty to acquire and learn on large quantities of video data. Deep learning, although a breakthrough for image…

Computer Vision and Pattern Recognition · Computer Science 2016-08-26 César Roberto de Souza , Adrien Gaidon , Eleonora Vig , Antonio Manuel López

Many videos depict people, and it is their interactions that inform us of their activities, relation to one another and the cultural and social setting. With advances in human action recognition, researchers have begun to address the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-24 Alexandros Stergiou , Ronald Poppe

News recommendation models often fall short in capturing users' preferences due to their static approach to user-news interactions. To address this limitation, we present a novel dynamic news recommender model that seamlessly integrates…

Information Retrieval · Computer Science 2023-09-20 Qinghua Zhao

Long video understanding presents significant challenges for vision-language models due to extremely long context windows. Existing solutions relying on naive chunking strategies with retrieval-augmented generation, typically suffer from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Xinlei Yin , Xiulian Peng , Xiao Li , Zhiwei Xiong , Yan Lu

Sensor-based human activity recognition (HAR) requires to predict the action of a person based on sensor-generated time series data. HAR has attracted major interest in the past few years, thanks to the large number of applications enabled…

Machine Learning · Computer Science 2021-03-30 Davide Buffelli , Fabio Vandin

This paper presents a survey of human action recognition approaches based on visual data recorded from a single video camera. We propose an organizing framework which puts in evidence the evolution of the area, with techniques moving from…

Computer Vision and Pattern Recognition · Computer Science 2010-06-18 Ana Paula Brandão Lopes , Eduardo Alves do Valle , Jussara Marques de Almeida , Arnaldo Albuquerque de Araújo

Interpretation and understanding of video presents a challenging computer vision task in numerous fields - e.g. autonomous driving and sports analytics. Existing approaches to interpreting the actions taking place within a video clip are…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Salman Khan , Izzeddin Teeti , Andrew Bradley , Mohamed Elhoseiny , Fabio Cuzzolin