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Automatic instrument segmentation in video is an essentially fundamental yet challenging problem for robot-assisted minimally invasive surgery. In this paper, we propose a novel framework to leverage instrument motion information, by…

Computer Vision and Pattern Recognition · Computer Science 2019-07-19 Yueming Jin , Keyun Cheng , Qi Dou , Pheng-Ann Heng

The general domain of video segmentation is currently fragmented into different tasks spanning multiple benchmarks. Despite rapid progress in the state-of-the-art, current methods are overwhelmingly task-specific and cannot conceptually…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Ali Athar , Alexander Hermans , Jonathon Luiten , Deva Ramanan , Bastian Leibe

Visual Place Recognition (VPR) aims to retrieve frames from a geotagged database that are located at the same place as the query frame. To improve the robustness of VPR in perceptually aliasing scenarios, sequence-based VPR methods are…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Junqiao Zhao , Fenglin Zhang , Yingfeng Cai , Gengxuan Tian , Wenjie Mu , Chen Ye , Tiantian Feng

Instance-level video segmentation requires a solid integration of spatial and temporal information. However, current methods rely mostly on domain-specific information (online learning) to produce accurate instance-level segmentations. We…

Computer Vision and Pattern Recognition · Computer Science 2019-04-12 Juan Leon Alcazar , Maria A. Bravo , Ali K. Thabet , Guillaume Jeanneret , Thomas Brox , Pablo Arbelaez , Bernard Ghanem

Visual Place Recognition (VPR) refers to the process of using computer vision to recognize the position of the current query image. Due to the significant changes in appearance caused by season, lighting, and time spans between query images…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Xuan Yu , Zhenyong Fu

Weakly supervised instance segmentation has gained popularity because it reduces high annotation cost of pixel-level masks required for model training. Recent approaches for weakly supervised instance segmentation detect and segment objects…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Jun Ikeda , Junichiro Mori

Training on large-scale datasets can boost the performance of video instance segmentation while the annotated datasets for VIS are hard to scale up due to the high labor cost. What we possess are numerous isolated filed-specific datasets,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Rongkun Zheng , Lu Qi , Xi Chen , Yi Wang , Kun Wang , Yu Qiao , Hengshuang Zhao

Modern approaches have proved the huge potential of addressing semantic segmentation as a mask classification task which is widely used in instance-level segmentation. This paradigm trains models by assigning part of object queries to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Zhaochong An , Guolei Sun , Zongwei Wu , Hao Tang , Luc Van Gool

Temporal grounding, which localizes video moments related to a natural language query, is a core problem of vision-language learning and video understanding. To encode video moments of varying lengths, recent methods employ a multi-level…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Thong Thanh Nguyen , Yi Bin , Xiaobao Wu , Zhiyuan Hu , Cong-Duy T Nguyen , See-Kiong Ng , Anh Tuan Luu

Referring image segmentation aims to segment a referent via a natural linguistic expression.Due to the distinct data properties between text and image, it is challenging for a network to well align text and pixel-level features. Existing…

Computer Vision and Pattern Recognition · Computer Science 2022-03-16 Zhaoqing Wang , Yu Lu , Qiang Li , Xunqiang Tao , Yandong Guo , Mingming Gong , Tongliang Liu

Instance level video object segmentation is an important technique for video editing and compression. To capture the temporal coherence, in this paper, we develop MaskRNN, a recurrent neural net approach which fuses in each frame the output…

Computer Vision and Pattern Recognition · Computer Science 2018-03-30 Yuan-Ting Hu , Jia-Bin Huang , Alexander G. Schwing

Handling occlusion remains a significant challenge for video instance-level tasks like Multiple Object Tracking (MOT) and Video Instance Segmentation (VIS). In this paper, we propose a novel framework, Amodal-Aware Video Instance…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Minh Tran , Thang Pham , Winston Bounsavy , Tri Nguyen , Ngan Le

Referring image segmentation (RIS) aims to segment objects in an image conditioning on free-from text descriptions. Despite the overwhelming progress, it still remains challenging for current approaches to perform well on cases with various…

Computer Vision and Pattern Recognition · Computer Science 2023-12-04 Yajie Liu , Pu Ge , Haoxiang Ma , Shichao Fan , Qingjie Liu , Di Huang , Yunhong Wang

Temporal action segmentation (TAS) divides untrimmed videos into labeled action segments. While fully supervised methods have advanced the field, challenges such as action variability, ambiguous boundaries, and high annotation costs remain,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Yeo Keat Ee , Debaditya Roy , Chen Li , Hao Zhang , Basura Fernando

Action segmentation refers to inferring boundaries of semantically consistent visual concepts in videos and is an important requirement for many video understanding tasks. For this and other video understanding tasks, supervised approaches…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 M. Saquib Sarfraz , Naila Murray , Vivek Sharma , Ali Diba , Luc Van Gool , Rainer Stiefelhagen

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

Segmenting foreground object from a video is a challenging task because of the large deformations of the objects, occlusions, and background clutter. In this paper, we propose a frame-by-frame but computationally efficient approach for…

Computer Vision and Pattern Recognition · Computer Science 2017-06-30 Aditya Vora , Shanmuganathan Raman

The problem of video object segmentation can become extremely challenging when multiple instances co-exist. While each instance may exhibit large scale and pose variations, the problem is compounded when instances occlude each other causing…

Computer Vision and Pattern Recognition · Computer Science 2018-03-15 Xiaoxiao Li , Chen Change Loy

Given a text query, partially relevant video retrieval (PRVR) aims to retrieve untrimmed videos containing relevant moments, wherein event modeling is crucial for partitioning the video into smaller temporal events that partially correspond…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Sa Zhu , Huashan Chen , Wanqian Zhang , Jinchao Zhang , Zexian Yang , Xiaoshuai Hao , Bo Li

Existing matching-based approaches perform video object segmentation (VOS) via retrieving support features from a pixel-level memory, while some pixels may suffer from lack of correspondence in the memory (i.e., unseen), which inevitably…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Hannan Lu , Zhi Tian , Lirong Yang , Haibing Ren , Wangmeng Zuo