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We present a framework for learning multimodal representations from unlabeled data using convolution-free Transformer architectures. Specifically, our Video-Audio-Text Transformer (VATT) takes raw signals as inputs and extracts multimodal…

Computer Vision and Pattern Recognition · Computer Science 2021-12-08 Hassan Akbari , Liangzhe Yuan , Rui Qian , Wei-Hong Chuang , Shih-Fu Chang , Yin Cui , Boqing Gong

Representing scenes at the granularity of objects is a prerequisite for scene understanding and decision making. We propose PriSMONet, a novel approach based on Prior Shape knowledge for learning Multi-Object 3D scene decomposition and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-04 Cathrin Elich , Martin R. Oswald , Marc Pollefeys , Joerg Stueckler

In this paper, we introduce a novel network, called discriminative feature network (DFNet), to address the unsupervised video object segmentation task. To capture the inherent correlation among video frames, we learn discriminative features…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Mingmin Zhen , Shiwei Li , Lei Zhou , Jiaxiang Shang , Haoan Feng , Tian Fang , Long Quan

As a vital topic in media content interpretation, video anomaly detection (VAD) has made fruitful progress via deep neural network (DNN). However, existing methods usually follow a reconstruction or frame prediction routine. They suffer…

Computer Vision and Pattern Recognition · Computer Science 2020-08-28 Guang Yu , Siqi Wang , Zhiping Cai , En Zhu , Chuanfu Xu , Jianping Yin , Marius Kloft

In this paper, we present an unsupervised probabilistic model and associated estimation algorithm for multi-object tracking (MOT) based on a dynamical variational autoencoder (DVAE), called DVAE-UMOT. The DVAE is a latent-variable deep…

Machine Learning · Computer Science 2022-02-22 Xiaoyu Lin , Laurent Girin , Xavier Alameda-Pineda

Self-supervised learning (SSL) holds promise in leveraging large amounts of unlabeled data. However, the success of popular SSL methods has limited on single-centric-object images like those in ImageNet and ignores the correlation among the…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Zhaowen Li , Yousong Zhu , Fan Yang , Wei Li , Chaoyang Zhao , Yingying Chen , Zhiyang Chen , Jiahao Xie , Liwei Wu , Rui Zhao , Ming Tang , Jinqiao Wang

This paper presents two unsupervised learning layers (UL layers) for label-free video analysis: one for fully connected layers, and the other for convolutional ones. The proposed UL layers can play two roles: they can be the cost function…

Machine Learning · Computer Science 2017-05-26 Liang Zhao , Yang Wang , Yi Yang , Wei Xu

This paper presents a new self-supervised system for learning to detect novel and previously unseen categories of objects in images. The proposed system receives as input several unlabeled videos of scenes containing various objects. The…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Juntao Tan , Changkyu Song , Abdeslam Boularias

Learning object segmentation in image and video datasets without human supervision is a challenging problem. Humans easily identify moving salient objects in videos using the gestalt principle of common fate, which suggests that what moves…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Silky Singh , Shripad Deshmukh , Mausoom Sarkar , Balaji Krishnamurthy

We study the problem of unsupervised discovery and segmentation of object parts, which, as an intermediate local representation, are capable of finding intrinsic object structure and providing more explainable recognition results. Recent…

Computer Vision and Pattern Recognition · Computer Science 2021-05-27 Shilong Liu , Lei Zhang , Xiao Yang , Hang Su , Jun Zhu

Unsupervised object discovery in images involves uncovering recurring patterns that define objects and discriminates them against the background. This is more challenging than image clustering as the size and the location of the objects are…

Computer Vision and Pattern Recognition · Computer Science 2020-11-05 Joost Visser , Alessandro Corbetta , Vlado Menkovski , Federico Toschi

We propose a novel solution for semi-supervised video object segmentation. By the nature of the problem, available cues (e.g. video frame(s) with object masks) become richer with the intermediate predictions. However, the existing methods…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Seoung Wug Oh , Joon-Young Lee , Ning Xu , Seon Joo Kim

In this paper, we show that recent advances in video representation learning and pre-trained vision-language models allow for substantial improvements in self-supervised video object localization. We propose a method that first localizes…

With the tremendously increasing number of videos, there is a great demand for techniques that help people quickly navigate to the video segments they are interested in. However, current works on video understanding mainly focus on video…

Computer Vision and Pattern Recognition · Computer Science 2022-09-02 Qi Lv , Ziqiang Cao , Wenrui Xie , Derui Wang , Jingwen Wang , Zhiwei Hu , Tangkun Zhang , Ba Yuan , Yuanhang Li , Min Cao , Wenjie Li , Sujian Li , Guohong Fu

Video understanding tasks have traditionally been modeled by two separate architectures, specially tailored for two distinct tasks. Sequence-based video tasks, such as action recognition, use a video backbone to directly extract…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Yucheng Zhao , Chong Luo , Chuanxin Tang , Dongdong Chen , Noel Codella , Zheng-Jun Zha

4D radar-based object detection has garnered great attention for its robustness in adverse weather conditions and capacity to deliver rich spatial information across diverse driving scenarios. Nevertheless, the sparse and noisy nature of 4D…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Fuyang Liu , Jilin Mei , Fangyuan Mao , Chen Min , Yan Xing , Yu Hu

The area of Video Camouflaged Object Detection (VCOD) presents unique challenges in the field of computer vision due to texture similarities between target objects and their surroundings, as well as irregular motion patterns caused by both…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Zifan Yu , Erfan Bank Tavakoli , Meida Chen , Suya You , Raghuveer Rao , Sanjeev Agarwal , Fengbo Ren

In the current monocular depth research, the dominant approach is to employ unsupervised training on large datasets, driven by warped photometric consistency. Such approaches lack robustness and are unable to generalize to challenging…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Jaime Spencer , Richard Bowden , Simon Hadfield

Video Object Segmentation (VOS) is typically formulated in a semi-supervised setting. Given the ground-truth segmentation mask on the first frame, the task of VOS is to track and segment the single or multiple objects of interests in the…

Computer Vision and Pattern Recognition · Computer Science 2020-03-16 Kaihua Zhang , Long Wang , Dong Liu , Bo Liu , Qingshan Liu , Zhu Li

Video object segmentation (VOS) describes the task of segmenting a set of objects in each frame of a video. In the semi-supervised setting, the first mask of each object is provided at test time. Following the one-shot principle,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Tim Meinhardt , Laura Leal-Taixe