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Current state-of-the-art video object segmentation models have achieved great success using supervised learning with massive labeled training datasets. However, these models are trained using a single source domain and evaluated using…

计算机视觉与模式识别 · 计算机科学 2024-05-31 Islam Osman , Mohamed S. Shehata

In this paper, we propose to learn an Unsupervised Single Object Tracker (USOT) from scratch. We identify that three major challenges, i.e., moving object discovery, rich temporal variation exploitation, and online update, are the central…

计算机视觉与模式识别 · 计算机科学 2021-08-31 Jilai Zheng , Chao Ma , Houwen Peng , Xiaokang Yang

Learning a stable Linear Dynamical System (LDS) from data involves creating models that both minimize reconstruction error and enforce stability of the learned representation. We propose a novel algorithm for learning stable LDSs. Using a…

机器学习 · 计算机科学 2020-11-19 Giorgos Mamakoukas , Orest Xherija , T. D. Murphey

Recently, dataset distillation has paved the way towards efficient machine learning, especially for image datasets. However, the distillation for videos, characterized by an exclusive temporal dimension, remains an underexplored domain. In…

计算机视觉与模式识别 · 计算机科学 2024-04-16 Ziyu Wang , Yue Xu , Cewu Lu , Yong-Lu Li

This paper does not describe a novel method. Instead, it studies a straightforward, incremental, yet must-know baseline given the recent progress in computer vision: self-supervised learning for Vision Transformers (ViT). While the training…

计算机视觉与模式识别 · 计算机科学 2021-08-17 Xinlei Chen , Saining Xie , Kaiming He

Moire patterns occur when capturing images or videos on screens, severely degrading the quality of the captured images or videos. Despite the recent progresses, existing video demoireing methods neglect the physical characteristics and…

计算机视觉与模式识别 · 计算机科学 2023-12-15 Shuning Xu , Binbin Song , Xiangyu Chen , Jiantao Zhou

Dynamical Systems (DS) are an effective and powerful means of shaping high-level policies for robotics control. They provide robust and reactive control while ensuring the stability of the driving vector field. The increasing complexity of…

机器人学 · 计算机科学 2024-03-19 Bernardo Fichera , Aude Billard

Video stabilization is an in-camera processing commonly applied by modern acquisition devices. While significantly improving the visual quality of the resulting videos, it has been shown that such operation typically hinders the forensic…

计算机视觉与模式识别 · 计算机科学 2022-08-01 Andrea Montibeller , Cecilia Pasquini , Giulia Boato , Stefano Dell'Anna , Fernando Pérez-González

Videos are a popular media form, where online video streaming has recently gathered much popularity. In this work, we propose a novel method of real-time video stabilization - transforming a shaky video to a stabilized video as if it were…

计算机视觉与模式识别 · 计算机科学 2021-11-12 Jinsoo Choi , Jaesik Park , In So Kweon

A Recurrent Neural Network (RNN) for Video Super Resolution (VSR) is generally trained with randomly clipped and cropped short videos extracted from original training videos due to various challenges in learning RNNs. However, since this…

计算机视觉与模式识别 · 计算机科学 2024-03-26 Hiroshi Mori , Norimichi Ukita

Extracting and predicting object structure and dynamics from videos without supervision is a major challenge in machine learning. To address this challenge, we adopt a keypoint-based image representation and learn a stochastic dynamics…

计算机视觉与模式识别 · 计算机科学 2020-03-03 Matthias Minderer , Chen Sun , Ruben Villegas , Forrester Cole , Kevin Murphy , Honglak Lee

In this paper, we address the problem of unsupervised video summarization that automatically extracts key-shots from an input video. Specifically, we tackle two critical issues based on our empirical observations: (i) Ineffective feature…

计算机视觉与模式识别 · 计算机科学 2018-11-27 Yunjae Jung , Donghyeon Cho , Dahun Kim , Sanghyun Woo , In So Kweon

Video transformers have recently emerged as an effective alternative to convolutional networks for action classification. However, most prior video transformers adopt either global space-time attention or hand-defined strategies to compare…

计算机视觉与模式识别 · 计算机科学 2022-04-01 Jue Wang , Lorenzo Torresani

Anomaly detection in video is a challenging computer vision problem. Due to the lack of anomalous events at training time, anomaly detection requires the design of learning methods without full supervision. In this paper, we approach…

计算机视觉与模式识别 · 计算机科学 2021-09-14 Mariana-Iuliana Georgescu , Antonio Barbalau , Radu Tudor Ionescu , Fahad Shahbaz Khan , Marius Popescu , Mubarak Shah

Rigid image alignment is a fundamental task in computer vision, while the traditional algorithms are either too sensitive to noise or time-consuming. Recent unsupervised image alignment methods developed based on spatial transformer…

计算机视觉与模式识别 · 计算机科学 2022-05-25 Yu-Xuan Chen , Dagan Feng , Hong-Bin Shen

Deep ConvNets have been shown to be effective for the task of human pose estimation from single images. However, several challenging issues arise in the video-based case such as self-occlusion, motion blur, and uncommon poses with few or no…

计算机视觉与模式识别 · 计算机科学 2017-04-03 Jie Song , Limin Wang , Luc Van Gool , Otmar Hilliges

Video anomaly detection is recently formulated as a multiple instance learning task under weak supervision, in which each video is treated as a bag of snippets to be determined whether contains anomalies. Previous efforts mainly focus on…

计算机视觉与模式识别 · 计算机科学 2022-08-12 Yujiang Pu , Xiaoyu Wu

Soft dynamic time warping (SDTW) is a differentiable loss function that allows for training neural networks from weakly aligned data. Typically, SDTW is used to iteratively compute and refine soft alignments that compensate for temporal…

音频与语音处理 · 电气工程与系统科学 2023-08-11 Johannes Zeitler , Simon Deniffel , Michael Krause , Meinard Müller

Video anomaly detection is one of the hot research topics in computer vision nowadays, as abnormal events contain a high amount of information. Anomalies are one of the main detection targets in surveillance systems, usually needing…

计算机视觉与模式识别 · 计算机科学 2021-11-03 Mohammad Baradaran , Robert Bergevin

Predictive uncertainty estimation is essential for deploying Deep Neural Networks in real-world autonomous systems. However, most successful approaches are computationally intensive. In this work, we attempt to address these challenges in…

计算机视觉与模式识别 · 计算机科学 2022-07-22 Gianni Franchi , Xuanlong Yu , Andrei Bursuc , Emanuel Aldea , Severine Dubuisson , David Filliat