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We present a general approach to video understanding, inspired by semantic transfer techniques that have been successfully used for 2D image analysis. Our method considers a video to be a 1D sequence of clips, each one associated with its…

Computer Vision and Pattern Recognition · Computer Science 2017-04-18 Dotan Kaufman , Gil Levi , Tal Hassner , Lior Wolf

Video segmentation -- partitioning video frames into multiple segments or objects -- plays a critical role in a broad range of practical applications, from enhancing visual effects in movie, to understanding scenes in autonomous driving, to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Tianfei Zhou , Fatih Porikli , David Crandall , Luc Van Gool , Wenguan Wang

We address the problem of temporal localization of repetitive activities in a video, i.e., the problem of identifying all segments of a video that contain some sort of repetitive or periodic motion. To do so, the proposed method represents…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Giorgos Karvounas , Iason Oikonomidis , Antonis Argyros

Object detection in video is crucial for many applications. Compared to images, video provides additional cues which can help to disambiguate the detection problem. Our goal in this paper is to learn discriminative models for the temporal…

Computer Vision and Pattern Recognition · Computer Science 2018-12-07 Tuan-Hung Vu , Anton Osokin , Ivan Laptev

This paper proposes a novel framework utilizing multi-modal large language models (MLLMs) for referring video object segmentation (RefVOS). Previous MLLM-based methods commonly struggle with the dilemma between "Ref" and "VOS": they either…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Lang Lin , Xueyang Yu , Ziqi Pang , Yu-Xiong Wang

Significant progress has been made in Video Object Segmentation (VOS), the video object tracking task in its finest level. While the VOS task can be naturally decoupled into image semantic segmentation and video object tracking,…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Xuhua Huang , Jiarui Xu , Yu-Wing Tai , Chi-Keung Tang

Referring image segmentation, the task of segmenting any arbitrary entities described in free-form texts, opens up a variety of vision applications. However, manual labeling of training data for this task is prohibitively costly, leading to…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Dongwon Kim , Namyup Kim , Cuiling Lan , Suha Kwak

The advancement of computer vision has pushed visual analysis tasks from still images to the video domain. In recent years, video instance segmentation, which aims to track and segment multiple objects in video frames, has drawn much…

Computer Vision and Pattern Recognition · Computer Science 2023-11-03 Yiming Cui , Cheng Han , Dongfang Liu

Semantic segmentation in surgical videos has applications in intra-operative guidance, post-operative analytics and surgical education. Segmentation models need to provide accurate and consistent predictions since temporally inconsistent…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Maria Grammatikopoulou , Ricardo Sanchez-Matilla , Felix Bragman , David Owen , Lucy Culshaw , Karen Kerr , Danail Stoyanov , Imanol Luengo

We introduce the task of retrieving relevant video moments from a large corpus of untrimmed, unsegmented videos given a natural language query. Our task poses unique challenges as a system must efficiently identify both the relevant videos…

Computer Vision and Pattern Recognition · Computer Science 2022-02-24 Victor Escorcia , Mattia Soldan , Josef Sivic , Bernard Ghanem , Bryan Russell

In the field of action recognition, video clips are always treated as ordered frames for subsequent processing. To achieve spatio-temporal perception, existing approaches propose to embed adjacent temporal interaction in the convolutional…

Computer Vision and Pattern Recognition · Computer Science 2022-02-01 Rongchang Li , Xiao-Jun Wu , Tianyang Xu

In this paper, we propose a method for temporal segmentation of human repetitive actions based on frequency analysis of kinematic parameters, zero-velocity crossing detection, and adaptive k-means clustering. Since the human motion data may…

Computer Vision and Pattern Recognition · Computer Science 2015-12-15 Qifei Wang , Gregorij Kurillo , Ferda Ofli , Ruzena Bajcsy

Referring Video Object Segmentation (R-VOS) is a challenging task that aims to segment an object in a video based on a linguistic expression. Most existing R-VOS methods have a critical assumption: the object referred to must appear in the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Xiang Li , Jinglu Wang , Xiaohao Xu , Xiao Li , Bhiksha Raj , Yan Lu

Semi-supervised video object segmentation aims to separate a target object from a video sequence, given the mask in the first frame. Most of current prevailing methods utilize information from additional modules trained in other domains…

Computer Vision and Pattern Recognition · Computer Science 2020-04-17 Yizhuo Zhang , Zhirong Wu , Houwen Peng , Stephen Lin

Referring video object segmentation (RVOS) aims to segment objects in videos guided by natural language descriptions. We propose FS-RVOS, a Transformer-based model with two key components: a cross-modal affinity module and an instance…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Heng Liu , Guanghui Li , Mingqi Gao , Xiantong Zhen , Feng Zheng , Yang Wang

Online video object segmentation is a challenging task as it entails to process the image sequence timely and accurately. To segment a target object through the video, numerous CNN-based methods have been developed by heavily finetuning on…

Computer Vision and Pattern Recognition · Computer Science 2018-06-07 Jingchun Cheng , Yi-Hsuan Tsai , Wei-Chih Hung , Shengjin Wang , Ming-Hsuan Yang

Generating temporally coherent high fidelity video is an important milestone in generative modeling research. We make progress towards this milestone by proposing a diffusion model for video generation that shows very promising initial…

Computer Vision and Pattern Recognition · Computer Science 2022-06-24 Jonathan Ho , Tim Salimans , Alexey Gritsenko , William Chan , Mohammad Norouzi , David J. Fleet

We propose an end-to-end learning framework for segmenting generic objects in both images and videos. Given a novel image or video, our approach produces a pixel-level mask for all "object-like" regions---even for object categories never…

Computer Vision and Pattern Recognition · Computer Science 2018-12-19 Bo Xiong , Suyog Dutt Jain , Kristen Grauman

We present VideoOrion, a Video Large Language Model (Video-LLM) that explicitly captures the key semantic information in videos - the spatial-temporal dynamics of objects throughout the videos. VideoOrion employs expert vision models to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Yicheng Feng , Yijiang Li , Wanpeng Zhang , Hao Luo , Zihao Yue , Sipeng Zheng , Zongqing Lu

Video generation has achieved remarkable progress with the introduction of diffusion models, which have significantly improved the quality of generated videos. However, recent research has primarily focused on scaling up model training,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-16 Chenyang Si , Weichen Fan , Zhengyao Lv , Ziqi Huang , Yu Qiao , Ziwei Liu