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Temporal action detection (TAD), which locates and recognizes action segments, remains a challenging task in video understanding due to variable segment lengths and ambiguous boundaries. Existing methods treat neighboring contexts of an…

计算机视觉与模式识别 · 计算机科学 2024-10-22 Ning Wang , Yun Xiao , Xiaopeng Peng , Xiaojun Chang , Xuanhong Wang , Dingyi Fang

Transformers suffer from a high computational cost that grows with sequence length for self-attention, making inference in long streams prohibited by memory consumption. Constant-memory alternatives such as RNNs and SSMs compress history…

机器学习 · 计算机科学 2026-04-24 Zhixin Zhang , Shabo Zhang , Chengcan Wu , Zeming Wei , Meng Sun

Scene recognition is currently one of the top-challenging research fields in computer vision. This may be due to the ambiguity between classes: images of several scene classes may share similar objects, which causes confusion among them.…

计算机视觉与模式识别 · 计算机科学 2020-02-28 Alejandro López-Cifuentes , Marcos Escudero-Viñolo , Jesús Bescós , Álvaro García-Martín

Anomaly detection is critically important for intelligent surveillance systems to detect in a timely manner any malicious activities. Many video anomaly detection approaches using deep learning methods focus on a single camera video stream…

计算机视觉与模式识别 · 计算机科学 2020-10-07 Chongke Wu , Sicong Shao , Cihan Tunc , Salim Hariri

We study the problem of extracting text instance contour information from images and use it to assist scene text detection. We propose a novel and effective framework for this and experimentally demonstrate that: (1) A CNN that can be…

计算机视觉与模式识别 · 计算机科学 2018-12-04 Dafang He , Xiao Yang , Daniel Kifer , C. Lee Giles

In recent years, deep neural networks (DNNs) have gained widespread adoption for continuous mobile object detection (OD) tasks, particularly in autonomous systems. However, a prevalent issue in their deployment is the one-size-fits-all…

机器学习 · 计算机科学 2024-04-30 Justin Davis , Mehmet E. Belviranli

Motivated by the previous success of Two-Dimensional Convolutional Neural Network (2D CNN) on image recognition, researchers endeavor to leverage it to characterize videos. However, one limitation of applying 2D CNN to analyze videos is…

计算机视觉与模式识别 · 计算机科学 2020-07-16 Junwu Weng , Donghao Luo , Yabiao Wang , Ying Tai , Chengjie Wang , Jilin Li , Feiyue Huang , Xudong Jiang , Junsong Yuan

Learning an effective speaker representation is crucial for achieving reliable performance in speaker verification tasks. Speech signals are high-dimensional, long, and variable-length sequences containing diverse information at each…

音频与语音处理 · 电气工程与系统科学 2023-08-25 Wei Xia , John H. L. Hansen

Abnormal event detection in videos is a challenging problem, partly due to the multiplicity of abnormal patterns and the lack of their corresponding annotations. In this paper, we propose new constrained pretext tasks to learn object level…

计算机视觉与模式识别 · 计算机科学 2023-04-25 Yassine Naji , Aleksandr Setkov , Angélique Loesch , Michèle Gouiffès , Romaric Audigier

Robust video scene classification models should capture the spatial (pixel-wise) and temporal (frame-wise) characteristics of a video effectively. Transformer models with self-attention which are designed to get contextualized…

计算机视觉与模式识别 · 计算机科学 2021-10-28 Saurabh Sahu , Palash Goyal

In this paper, we place the atomic action detection problem into a Long-Short Term Context (LSTC) to analyze how the temporal reliance among video signals affect the action detection results. To do this, we decompose the action recognition…

计算机视觉与模式识别 · 计算机科学 2021-10-20 Yuxi Li , Boshen Zhang , Jian Li , Yabiao Wang , Weiyao Lin , Chengjie Wang , Jilin Li , Feiyue Huang

In this paper, we propose a novel edge preserving and multi-scale contextual neural network for salient object detection. The proposed framework is aiming to address two limits of the existing CNN based methods. First, region-based CNN…

计算机视觉与模式识别 · 计算机科学 2017-10-26 Xiang Wang , Huimin Ma , Xiaozhi Chen , Shaodi You

We address the problem of capturing temporal information for video classification in 2D networks, without increasing their computational cost. Existing approaches focus on modifying the architecture of 2D networks (e.g. by including filters…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Kiyoon Kim , Shreyank N Gowda , Oisin Mac Aodha , Laura Sevilla-Lara

Recent progress on salient object detection mainly aims at exploiting how to effectively integrate convolutional side-output features in convolutional neural networks (CNN). Based on this, most of the existing state-of-the-art saliency…

计算机视觉与模式识别 · 计算机科学 2019-04-02 Yun Liu , Yu Qiu , Le Zhang , JiaWang Bian , Guang-Yu Nie , Ming-Ming Cheng

Research in action detection has grown in the recentyears, as it plays a key role in video understanding. Modelling the interactions (either spatial or temporal) between actors and their context has proven to be essential for this task.…

计算机视觉与模式识别 · 计算机科学 2021-06-30 Manuel Sarmiento Calderó , David Varas , Elisenda Bou-Balust

It has been well recognized that modeling human-object or object-object relations would be helpful for detection task. Nevertheless, the problem is not trivial especially when exploring the interactions between human actor, object and scene…

计算机视觉与模式识别 · 计算机科学 2020-04-01 Dong Li , Ting Yao , Zhaofan Qiu , Houqiang Li , Tao Mei

Detecting partially occluded objects is a difficult task. Our experimental results show that deep learning approaches, such as Faster R-CNN, are not robust at object detection under occlusion. Compositional convolutional neural networks…

计算机视觉与模式识别 · 计算机科学 2020-06-02 Angtian Wang , Yihong Sun , Adam Kortylewski , Alan Yuille

Recent approaches for high accuracy detection and tracking of object categories in video consist of complex multistage solutions that become more cumbersome each year. In this paper we propose a ConvNet architecture that jointly performs…

计算机视觉与模式识别 · 计算机科学 2018-03-08 Christoph Feichtenhofer , Axel Pinz , Andrew Zisserman

Learning robust contextual knowledge from unlabeled videos is essential for advancing self-supervised tracking. However, conventional self-supervised trackers lack effective context modeling, while existing context association methods based…

计算机视觉与模式识别 · 计算机科学 2026-05-08 Yaozong Zheng , Qihua Liang , Bineng Zhong , Shuimu Zeng , Yuanliang Xue , Ning Li , Shuxiang Song

Street scene understanding is an essential task for autonomous driving. One important step towards this direction is scene labeling, which annotates each pixel in the images with a correct class label. Although many approaches have been…

计算机视觉与模式识别 · 计算机科学 2019-05-07 Qi Wang , Junyu Gao , Yuan Yuan