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Transferring image-based object detectors to the domain of video remains challenging under resource constraints. Previous efforts utilised optical flow to allow unchanged features to be propagated, however, the overhead is considerable when…

计算机视觉与模式识别 · 计算机科学 2021-06-22 Amin Sabet , Jonathon Hare , Bashir Al-Hashimi , Geoff V. Merrett

Shot boundary detection (SBD) is an important pre-processing step for video manipulation. Here, each segment of frames is classified as either sharp, gradual or no transition. Current SBD techniques analyze hand-crafted features and attempt…

计算机视觉与模式识别 · 计算机科学 2017-07-28 Ahmed Hassanien , Mohamed Elgharib , Ahmed Selim , Sung-Ho Bae , Mohamed Hefeeda , Wojciech Matusik

This paper presents an approach to detect and track groups of people in video-surveillance applications, and to automatically recognize their behavior. This method keeps track of individuals moving together by maintaining a spacial and…

计算机视觉与模式识别 · 计算机科学 2013-03-04 Sofia Zaidenberg , Bernard Boulay , François Bremond

Video object detection needs to solve feature degradation situations that rarely happen in the image domain. One solution is to use the temporal information and fuse the features from the neighboring frames. With Transformerbased object…

计算机视觉与模式识别 · 计算机科学 2023-03-21 Yiming Cui , Linjie Yang

A number of computer vision tasks exploit a succinct representation of the visual content in the form of sets of local features. Given an input image, feature extraction algorithms identify a set of keypoints and assign to each of them a…

计算机视觉与模式识别 · 计算机科学 2016-11-18 Luca Baroffio , Matteo Cesana , Alessandro Redondi , Marco Tagliasacchi

Recent camouflaged object detection (COD) attempts to segment objects visually blended into their surroundings, which is extremely complex and difficult in real-world scenarios. Apart from the high intrinsic similarity between camouflaged…

计算机视觉与模式识别 · 计算机科学 2024-07-16 Youwei Pang , Xiaoqi Zhao , Tian-Zhu Xiang , Lihe Zhang , Huchuan Lu

We present an algorithm to estimate depth in dynamic video scenes. We propose to learn and infer depth in videos from appearance, motion, occlusion boundaries, and geometric context of the scene. Using our method, depth can be estimated…

计算机视觉与模式识别 · 计算机科学 2015-10-27 S. Hussain Raza , Omar Javed , Aveek Das , Harpreet Sawhney , Hui Cheng , Irfan Essa

This paper proposes a new framework for semantic segmentation of objects in videos. We address the label inconsistency problem of deep convolutional neural networks (DCNNs) by exploiting the fact that videos have multiple frames; in a few…

计算机视觉与模式识别 · 计算机科学 2017-11-23 Seong-Jin Park , Ki-Sang Hong

The problem of video object segmentation can become extremely challenging when multiple instances co-exist. While each instance may exhibit large scale and pose variations, the problem is compounded when instances occlude each other causing…

计算机视觉与模式识别 · 计算机科学 2018-03-15 Xiaoxiao Li , Chen Change Loy

With the recent advances in complex networks theory, graph-based techniques for image segmentation has attracted great attention recently. In order to segment the image into meaningful connected components, this paper proposes an image…

计算机视觉与模式识别 · 计算机科学 2019-07-12 Youssef Mourchid , Mohammed El Hassouni , Hocine Cherifi

In this paper the problem of complex event detection in the continuous domain (i.e. events with unknown starting and ending locations) is addressed. Existing event detection methods are limited to features that are extracted from the local…

计算机视觉与模式识别 · 计算机科学 2017-06-14 Iman Abbasnejad , Sridha Sridharan , Simon Denman , Clinton Fookes , Simon Lucey

Consecutive frames in a video are highly redundant. Therefore, to perform the task of video object detection, executing single frame detectors on every frame without reusing any information is quite wasteful. It is with this idea in mind…

计算机视觉与模式识别 · 计算机科学 2020-04-03 Hughes Perreault , Maguelonne Héritier , Pierre Gravel , Guillaume-Alexandre Bilodeau , Nicolas Saunier

Recently, video object segmentation (VOS) networks typically use memory-based methods: for each query frame, the mask is predicted by space-time matching to memory frames. Despite these methods having superior performance, they suffer from…

计算机视觉与模式识别 · 计算机科学 2024-05-08 Yadang Chen , Wentao Zhu , Zhi-Xin Yang , Enhua Wu

Video Anomaly Detection~(VAD) focuses on identifying anomalies within videos. Supervised methods require an amount of in-domain training data and often struggle to generalize to unseen anomalies. In contrast, training-free methods leverage…

计算机视觉与模式识别 · 计算机科学 2025-07-29 Yihua Shao , Haojin He , Sijie Li , Siyu Chen , Xinwei Long , Fanhu Zeng , Yuxuan Fan , Muyang Zhang , Ziyang Yan , Ao Ma , Xiaochen Wang , Hao Tang , Yan Wang , Shuyan Li

Video object detection has made significant progress in recent years thanks to convolutional neural networks (CNNs) and vision transformers (ViTs). Typically, CNNs excel at capturing local features but struggle to model global…

计算机视觉与模式识别 · 计算机科学 2025-05-13 Qiang Qi , Xiao Wang

Multimedia event detection is the task of detecting a specific event of interest in an user-generated video on websites. The most fundamental challenge facing this task lies in the enormously varying quality of the video as well as the…

计算机视觉与模式识别 · 计算机科学 2021-10-18 Minnan Luo , Xiaojun Chang , Chen Gong

Encouraged by the success of Convolutional Neural Networks (CNNs) in image classification, recently much effort is spent on applying CNNs to video based action recognition problems. One challenge is that video contains a varying number of…

计算机视觉与模式识别 · 计算机科学 2015-04-17 Peng Wang , Yuanzhouhan Cao , Chunhua Shen , Lingqiao Liu , Heng Tao Shen

Video instance segmentation is a challenging task that extends image instance segmentation to the video domain. Existing methods either rely only on single-frame information for the detection and segmentation subproblems or handle tracking…

计算机视觉与模式识别 · 计算机科学 2022-03-08 Tao Wang , Ning Xu , Kean Chen , Weiyao Lin

Referring video object segmentation aims to segment a referent throughout a video sequence according to a natural language expression. It requires aligning the natural language expression with the objects' motions and their dynamic…

计算机视觉与模式识别 · 计算机科学 2023-09-08 Jiajin Tang , Ge Zheng , Sibei Yang

In this paper, we propose an accurate and real-time anomaly detection and localization in crowded scenes, and two descriptors for representing anomalous behavior in video are proposed. We consider a video as being a set of cubic patches.…

计算机视觉与模式识别 · 计算机科学 2016-01-05 Mohammad Sabokrou , Mahmood Fathy , Mojtaba Hosseini