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Visual object tracking is a fundamental video task in computer vision. Recently, the notably increasing power of perception algorithms allows the unification of single/multiobject and box/mask-based tracking. Among them, the Segment…

Computer Vision and Pattern Recognition · Computer Science 2023-07-27 Jiawen Zhu , Zhenyu Chen , Zeqi Hao , Shijie Chang , Lu Zhang , Dong Wang , Huchuan Lu , Bin Luo , Jun-Yan He , Jin-Peng Lan , Hanyuan Chen , Chenyang Li

Existing online video segmentation models typically combine a per-frame segmenter with complex specialized tracking modules. While effective, these modules introduce significant architectural complexity and computational overhead. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Narges Norouzi , Idil Esen Zulfikar , Niccolò Cavagnero , Tommie Kerssies , Bastian Leibe , Gijs Dubbelman , Daan de Geus

The video topic segmentation (VTS) task segments videos into intelligible, non-overlapping topics, facilitating efficient comprehension of video content and quick access to specific content. VTS is also critical to various downstream video…

Artificial Intelligence · Computer Science 2024-12-31 Hai Yu , Chong Deng , Qinglin Zhang , Jiaqing Liu , Qian Chen , Wen Wang

Video object segmentation (VOS) is a highly challenging problem since the initial mask, defining the target object, is only given at test-time. The main difficulty is to effectively handle appearance changes and similar background objects,…

Computer Vision and Pattern Recognition · Computer Science 2020-04-01 Andreas Robinson , Felix Järemo Lawin , Martin Danelljan , Fahad Shahbaz Khan , Michael Felsberg

We find Mask2Former also achieves state-of-the-art performance on video instance segmentation without modifying the architecture, the loss or even the training pipeline. In this report, we show universal image segmentation architectures…

Computer Vision and Pattern Recognition · Computer Science 2021-12-21 Bowen Cheng , Anwesa Choudhuri , Ishan Misra , Alexander Kirillov , Rohit Girdhar , Alexander G. Schwing

Modern one-stage video instance segmentation networks suffer from two limitations. First, convolutional features are neither aligned with anchor boxes nor with ground-truth bounding boxes, reducing the mask sensitivity to spatial location.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Minghan Li , Shuai Li , Lida Li , Lei Zhang

We introduce a method for simultaneously classifying, segmenting and tracking object instances in a video sequence. Our method, named MaskProp, adapts the popular Mask R-CNN to video by adding a mask propagation branch that propagates…

Computer Vision and Pattern Recognition · Computer Science 2021-07-13 Gedas Bertasius , Lorenzo Torresani

Accuracy and processing speed are two important factors that affect the use of video object segmentation (VOS) in real applications. With the advanced techniques of deep neural networks, the accuracy has been significantly improved,…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Tao Zhuo , Zhiyong Cheng , Mohan Kankanhalli

We propose FlowCut, a simple and capable method for unsupervised video instance segmentation consisting of a three-stage framework to construct a high-quality video dataset with pseudo labels. To our knowledge, our work is the first attempt…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Alp Eren Sari , Paolo Favaro

Audio-Visual Segmentation (AVS) aims to segment sound-producing objects in video frames based on the associated audio signal. Prevailing AVS methods typically adopt an audio-centric Transformer architecture, where object queries are derived…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Shaofei Huang , Rui Ling , Tianrui Hui , Hongyu Li , Xu Zhou , Shifeng Zhang , Si Liu , Richang Hong , Meng Wang

The goal of this paper is to discover, segment, and track independently moving objects in complex visual scenes. Previous approaches have explored the use of optical flow for motion segmentation, leading to imperfect predictions due to…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Junyu Xie , Weidi Xie , Andrew Zisserman

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

We propose a novel end-to-end solution for video instance segmentation (VIS) based on transformers. Recently, the per-clip pipeline shows superior performance over per-frame methods leveraging richer information from multiple frames.…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Sukjun Hwang , Miran Heo , Seoung Wug Oh , Seon Joo Kim

Video instance segmentation (VIS) is a critical task with diverse applications, including autonomous driving and video editing. Existing methods often underperform on complex and long videos in real world, primarily due to two factors.…

Computer Vision and Pattern Recognition · Computer Science 2023-07-17 Tao Zhang , Xingye Tian , Yu Wu , Shunping Ji , Xuebo Wang , Yuan Zhang , Pengfei Wan

Video tasks are compute-heavy and thus pose a challenge when deploying in real-time applications, particularly for tasks that require state-of-the-art Vision Transformers (ViTs). Several research efforts have tried to address this challenge…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Sreetama Sarkar , Gourav Datta , Souvik Kundu , Kai Zheng , Chirayata Bhattacharyya , Peter A. Beerel

Recently, memory-based approaches show promising results on semi-supervised video object segmentation. These methods predict object masks frame-by-frame with the help of frequently updated memory of the previous mask. Different from this…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Kwanyong Park , Sanghyun Woo , Seoung Wug Oh , In So Kweon , Joon-Young Lee

Video segmentation aims at partitioning video sequences into meaningful segments based on objects or regions of interest within frames. Current video segmentation models are often derived from image segmentation techniques, which struggle…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Chen Liang , Qiang Guo , Xiaochao Qu , Luoqi Liu , Ting Liu

Video Instance Segmentation (VIS) faces significant annotation challenges due to its dual requirements of pixel-level masks and temporal consistency labels. While recent unsupervised methods like VideoCutLER eliminate optical flow…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Kaixuan Lu , Mehmet Onurcan Kaya , Dim P. Papadopoulos

The two-stage methods for instance segmentation, e.g. Mask R-CNN, have achieved excellent performance recently. However, the segmented masks are still very coarse due to the downsampling operations in both the feature pyramid and the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Gang Zhang , Xin Lu , Jingru Tan , Jianmin Li , Zhaoxiang Zhang , Quanquan Li , Xiaolin Hu

Video temporal grounding (VTG) aims to localize the start and end timestamps of the event described by a given query within an untrimmed video. Despite the strong open-world video understanding and recognition ability of video language…

Multimedia · Computer Science 2026-05-05 Pengcheng Fang , Yuxia Chen , Xiaohao Cai