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Reliable markerless motion tracking of people participating in a complex group activity from multiple moving cameras is challenging due to frequent occlusions, strong viewpoint and appearance variations, and asynchronous video streams. To…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Minh Vo , Ersin Yumer , Kalyan Sunkavalli , Sunil Hadap , Yaser Sheikh , Srinivasa Narasimhan

Online tracking of multiple objects in videos requires strong capacity of modeling and matching object appearances. Previous methods for learning appearance embedding mostly rely on instance-level matching without considering the temporal…

Computer Vision and Pattern Recognition · Computer Science 2021-07-07 Wei Li , Yuanjun Xiong , Shuo Yang , Mingze Xu , Yongxin Wang , Wei Xia

The task of temporally detecting and segmenting actions in untrimmed videos has seen an increased attention recently. One problem in this context arises from the need to define and label action boundaries to create annotations for training…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Anna Kukleva , Hilde Kuehne , Fadime Sener , Juergen Gall

Current state-of-the-art classification and detection algorithms rely on supervised training. In this work we study unsupervised feature learning in the context of temporally coherent video data. We focus on feature learning from unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2015-04-17 Ross Goroshin , Joan Bruna , Jonathan Tompson , David Eigen , Yann LeCun

This paper presents a self-supervised method for learning reliable visual correspondence from unlabeled videos. We formulate the correspondence as finding paths in a joint space-time graph, where nodes are grid patches sampled from frames,…

Computer Vision and Pattern Recognition · Computer Science 2021-09-29 Zixu Zhao , Yueming Jin , Pheng-Ann Heng

Video super-resolution (VSR) aims to restore a sequence of high-resolution (HR) frames from their low-resolution (LR) counterparts. Although some progress has been made, there are grand challenges to effectively utilize temporal dependency…

Image and Video Processing · Electrical Eng. & Systems 2022-04-21 Chengxu Liu , Huan Yang , Jianlong Fu , Xueming Qian

Recently, heatmap regression has been widely explored in facial landmark detection and obtained remarkable performance. However, most of the existing heatmap regression-based facial landmark detection methods neglect to explore the…

Computer Vision and Pattern Recognition · Computer Science 2020-12-14 Jun Wan , Zhihui Lai , Jing Li , Jie Zhou , Can Gao

We present a method for automatically labelling all faces in video archives, such as TV broadcasts, by combining multiple evidence sources and multiple modalities (visual and audio). We target the problem of ever-growing online video…

Computer Vision and Pattern Recognition · Computer Science 2021-02-11 Andrew Brown , Ernesto Coto , Andrew Zisserman

Self-supervised learning allows for better utilization of unlabelled data. The feature representation obtained by self-supervision can be used in downstream tasks such as classification, object detection, segmentation, and anomaly…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Rabia Ali , Muhammad Umar Karim Khan , Chong Min Kyung

Robust face detection is one of the most important pre-processing steps to support facial expression analysis, facial landmarking, face recognition, pose estimation, building of 3D facial models, etc. Although this topic has been intensely…

Computer Vision and Pattern Recognition · Computer Science 2017-01-03 Yutong Zheng , Chenchen Zhu , Khoa Luu , Chandrasekhar Bhagavatula , T. Hoang Ngan Le , Marios Savvides

Contrastive self-supervised learning has largely narrowed the gap to supervised pre-training on ImageNet. However, its success highly relies on the object-centric priors of ImageNet, i.e., different augmented views of the same image…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Jiahao Xie , Xiaohang Zhan , Ziwei Liu , Yew Soon Ong , Chen Change Loy

We present a novel online unsupervised method for face identity learning from video streams. The method exploits deep face descriptors together with a memory based learning mechanism that takes advantage of the temporal coherence of visual…

Computer Vision and Pattern Recognition · Computer Science 2020-10-19 Federico Pernici , Federico Bartoli , Matteo Bruni , Alberto Del Bimbo

Multimodal large language models (MLLMs) have advanced from image-level reasoning to pixel-level grounding, but extending these capabilities to videos remains challenging as models must achieve spatial precision and temporally consistent…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Mohamad Alansari , Naufal Suryanto , Divya Velayudhan , Sajid Javed , Naoufel Werghi , Muzammal Naseer

Is strong supervision necessary for learning a good visual representation? Do we really need millions of semantically-labeled images to train a Convolutional Neural Network (CNN)? In this paper, we present a simple yet surprisingly powerful…

Computer Vision and Pattern Recognition · Computer Science 2015-10-07 Xiaolong Wang , Abhinav Gupta

We address the problem of retrieving a specific moment from an untrimmed video by a query sentence. This is a challenging problem because a target moment may take place in relations to other temporal moments in the untrimmed video. Existing…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Songyang Zhang , Houwen Peng , Jianlong Fu , Jiebo Luo

Purpose: We perform anatomical landmarking for craniomaxillofacial (CMF) bones without explicitly segmenting them. Towards this, we propose a new simple yet efficient deep network architecture, called \textit{relational reasoning network…

Machine Learning · Computer Science 2022-09-20 Neslisah Torosdagli , Syed Anwar , Payal Verma , Denise K Liberton , Janice S. Lee , Wade W. Han , Ulas Bagci

The ability to detect and track objects in the visual world is a crucial skill for any intelligent agent, as it is a necessary precursor to any object-level reasoning process. Moreover, it is important that agents learn to track objects…

Machine Learning · Computer Science 2019-11-21 Eric Crawford , Joelle Pineau

We propose a novel method for real-time face alignment in videos based on a recurrent encoder-decoder network model. Our proposed model predicts 2D facial point heat maps regularized by both detection and regression loss, while uniquely…

Computer Vision and Pattern Recognition · Computer Science 2018-01-19 Xi Peng , Rogerio S. Feris , Xiaoyu Wang , Dimitris N. Metaxas

We propose a novel supervised learning technique for summarizing videos by automatically selecting keyframes or key subshots. Casting the problem as a structured prediction problem on sequential data, our main idea is to use Long Short-Term…

Computer Vision and Pattern Recognition · Computer Science 2016-08-01 Ke Zhang , Wei-Lun Chao , Fei Sha , Kristen Grauman

Accurate traffic flow forecasting is a crucial research topic in transportation management. However, it is a challenging problem due to rapidly changing traffic conditions, high nonlinearity of traffic flow, and complex spatial and temporal…

Machine Learning · Computer Science 2024-06-06 Sanghyun Lee , Chanyoung Park