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Object segmentation and object tracking are fundamental research area in the computer vision community. These two topics are diffcult to handle some common challenges, such as occlusion, deformation, motion blur, and scale variation. The…

Computer Vision and Pattern Recognition · Computer Science 2019-04-29 Rui Yao , Guosheng Lin , Shixiong Xia , Jiaqi Zhao , Yong Zhou

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

Multimodal Large Language Models (MLLMs) have increasingly localized and interleaved visual evidence for deliberative reasoning. Grounding-based approaches typically focus on regions of interest (RoIs) by injecting cropped image patches or…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Guannan Lv , Ren Nie , Hongjian Dou , Tingting Gao

In this report, we introduce our (pretty straightforard) two-step "detect-then-match" video instance segmentation method. The first step performs instance segmentation for each frame to get a large number of instance mask proposals. The…

Computer Vision and Pattern Recognition · Computer Science 2021-11-03 Yuming Du , Wen Guo , Yang Xiao , Vincent Lepetit

We present REM, a framework for segmenting a wide range of concepts in video that can be described through natural language. Our method leverages the universal visual-language mapping learned by video diffusion models on Internet-scale data…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Anurag Bagchi , Zhipeng Bao , Yu-Xiong Wang , Pavel Tokmakov , Martial Hebert

Video reasoning segmentation (VRS) endeavors to delineate referred objects in videos guided by implicit instructions that encapsulate human intent and temporal logic. Previous approaches leverage large vision language models (LVLMs) to…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Sitong Gong , Lu Zhang , Yunzhi Zhuge , Xu Jia , Pingping Zhang , Huchuan Lu

Amodal perception requires inferring the full shape of an object that is partially occluded. This task is particularly challenging on two levels: (1) it requires more information than what is contained in the instant retina or imaging…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Jian Yao , Yuxin Hong , Chiyu Wang , Tianjun Xiao , Tong He , Francesco Locatello , David Wipf , Yanwei Fu , Zheng Zhang

This paper proposes a framework for the interactive video object segmentation (VOS) in the wild where users can choose some frames for annotations iteratively. Then, based on the user annotations, a segmentation algorithm refines the masks.…

Computer Vision and Pattern Recognition · Computer Science 2021-06-18 Zhaoyuan Yin , Jia Zheng , Weixin Luo , Shenhan Qian , Hanling Zhang , Shenghua Gao

Most existing video moment retrieval methods rely on temporal sequences of frame- or clip-level features that primarily encode global visual and semantic information. However, such representations often fail to capture fine-grained object…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Zongyao Li , Yongkang Wong , Satoshi Yamazaki , Jianquan Liu , Mohan Kankanhalli

Moving Object Segmentation (MOS) aims to discover, segment, and track objects that move independently of the camera. Current MOS methods, however, exhibit two fundamental limitations: they rely on pre-computed 2D auxiliary modalities such…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Junyu Xie , Tengda Han , Weidi Xie , Andrew Zisserman

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

Recent state-of-the-art semi-supervised Video Object Segmentation (VOS) methods have shown significant improvements in target object segmentation accuracy when information from preceding frames is used in segmenting the current frame. In…

Computer Vision and Pattern Recognition · Computer Science 2024-02-15 Amir Nazemi , Mohammad Javad Shafiee , Zahra Gharaee , Paul Fieguth

Visual grounding tasks, such as referring image segmentation (RIS) and referring expression comprehension (REC), aim to localize a target object based on a given textual description. The target object in an image can be described in…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Seonghoon Yu , Junbeom Hong , Joonseok Lee , Jeany Son

Many top-down architectures for instance segmentation achieve significant success when trained and tested on pre-defined closed-world taxonomy. However, when deployed in the open world, they exhibit notable bias towards seen classes and…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Tarun Kalluri , Weiyao Wang , Heng Wang , Manmohan Chandraker , Lorenzo Torresani , Du Tran

Recently, several Space-Time Memory based networks have shown that the object cues (e.g. video frames as well as the segmented object masks) from the past frames are useful for segmenting objects in the current frame. However, these methods…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Haozhe Xie , Hongxun Yao , Shangchen Zhou , Shengping Zhang , Wenxiu Sun

Multi-modal Video Object Segmentation (VOS), including RGB-Thermal, RGB-Depth, and RGB-Event, has garnered attention due to its capability to address challenging scenarios where traditional VOS methods struggle, such as extreme…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Pinxue Guo , Wanyun Li , Hao Huang , Lingyi Hong , Xinyu Zhou , Zhaoyu Chen , Jinglun Li , Kaixun Jiang , Wei Zhang , Wenqiang Zhang

Referring expression grounding aims at locating certain objects or persons in an image with a referring expression, where the key challenge is to comprehend and align various types of information from visual and textual domain, such as…

Computer Vision and Pattern Recognition · Computer Science 2019-04-03 Xihui Liu , Zihao Wang , Jing Shao , Xiaogang Wang , Hongsheng Li

Previous works on video object segmentation (VOS) are trained on densely annotated videos. Nevertheless, acquiring annotations in pixel level is expensive and time-consuming. In this work, we demonstrate the feasibility of training a…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Kun Yan , Xiao Li , Fangyun Wei , Jinglu Wang , Chenbin Zhang , Ping Wang , Yan Lu

Traditional video reasoning segmentation methods rely on supervised fine-tuning, which limits generalization to out-of-distribution scenarios and lacks explicit reasoning. To address this, we propose \textbf{VideoSeg-R1}, the first…

Computer Vision and Pattern Recognition · Computer Science 2025-11-21 Zishan Xu , Yifu Guo , Yuquan Lu , Fengyu Yang , Junxin Li

Reasoning-centric video object segmentation is an inherently complex task: the query often refers to dynamics, causality, and temporal interactions, rather than static appearances. Yet existing solutions generally collapse these factors…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yifan Li , Yingda Yin , Lingting Zhu , Weikai Chen , Shengju Qian , Xin Wang , Yanwei Fu