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We propose MASTAF, a Model-Agnostic Spatio-Temporal Attention Fusion network for few-shot video classification. MASTAF takes input from a general video spatial and temporal representation,e.g., using 2D CNN, 3D CNN, and Video Transformer.…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Rex Liu , Huanle Zhang , Hamed Pirsiavash , Xin Liu

Visual Word Sense Disambiguation (VWSD) is a multi-modal task that aims to select, among a batch of candidate images, the one that best entails the target word's meaning within a limited context. In this paper, we propose a multi-modal…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Zhuohao Yin , Xin Huang

Unsupervised video object segmentation (UVOS) aims at detecting the primary objects in a given video sequence without any human interposing. Most existing methods rely on two-stream architectures that separately encode the appearance and…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Lingyi Hong , Wei Zhang , Shuyong Gao , Hong Lu , WenQiang Zhang

Accurate moving object segmentation is an essential task for autonomous driving. It can provide effective information for many downstream tasks, such as collision avoidance, path planning, and static map construction. How to effectively…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Jiadai Sun , Yuchao Dai , Xianjing Zhang , Jintao Xu , Rui Ai , Weihao Gu , Xieyuanli Chen

Unsupervised video object segmentation has often been tackled by methods based on recurrent neural networks and optical flow. Despite their complexity, these kinds of approaches tend to favour short-term temporal dependencies and are thus…

Computer Vision and Pattern Recognition · Computer Science 2019-10-25 Zhao Yang , Qiang Wang , Luca Bertinetto , Weiming Hu , Song Bai , Philip H. S. Torr

Video camouflaged object detection (VCOD) is challenging due to dynamic environments. Existing methods face two main issues: (1) SAM-based methods struggle to separate camouflaged object edges due to model freezing, and (2) MLLM-based…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Hua Zhang , Changjiang Luo , Ruoyu Chen

Video object segmentation (VOS) aims at segmenting a particular object throughout the entire video clip sequence. The state-of-the-art VOS methods have achieved excellent performance (e.g., 90+% J&F) on existing datasets. However, since the…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Henghui Ding , Chang Liu , Shuting He , Xudong Jiang , Philip H. S. Torr , Song Bai

The Segment Anything Model (SAM) has gained significant attention for its impressive performance in image segmentation. However, it lacks proficiency in referring video object segmentation (RVOS) due to the need for precise user-interactive…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yonglin Li , Jing Zhang , Xiao Teng , Long Lan , Xinwang Liu

In this paper, we propose a simple yet effective approach for self-supervised video object segmentation (VOS). Our key insight is that the inherent structural dependencies present in DINO-pretrained Transformers can be leveraged to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Shuangrui Ding , Rui Qian , Haohang Xu , Dahua Lin , Hongkai Xiong

Few-shot video classification aims to learn new video categories with only a few labeled examples, alleviating the burden of costly annotation in real-world applications. However, it is particularly challenging to learn a class-invariant…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Songyang Zhang , Jiale Zhou , Xuming He

Video Frame Interpolation (VFI) remains a cornerstone in video enhancement, enabling temporal upscaling for tasks like slow-motion rendering, frame rate conversion, and video restoration. While classical methods rely on optical flow and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Priyansh Srivastava , Romit Chatterjee , Abir Sen , Aradhana Behura , Ratnakar Dash

Neural Video Compression has emerged in recent years, with condition-based frameworks outperforming traditional codecs. However, most existing methods rely solely on the previous frame's features to predict temporal context, leading to two…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Tiange Zhang , Zhimeng Huang , Xiandong Meng , Kai Zhang , Zhipin Deng , Siwei Ma

The reliability of artificial intelligence (AI) systems in open-world settings depends heavily on their ability to flag out-of-distribution (OOD) inputs unseen during training. Recent advances in large-scale vision-language models (VLMs)…

Machine Learning · Computer Science 2025-10-14 Faizul Rakib Sayem , Shahana Ibrahim

Video anomaly detection (VAD) remains a challenging task in the pattern recognition community due to the ambiguity and diversity of abnormal events. Existing deep learning-based VAD methods usually leverage proxy tasks to learn the normal…

Computer Vision and Pattern Recognition · Computer Science 2022-11-03 Mengyang Zhao , Yang Liu , Jing Li , Xinhua Zeng

In this paper, we present a unified, end-to-end trainable spatiotemporal CNN model for VOS, which consists of two branches, i.e., the temporal coherence branch and the spatial segmentation branch. Specifically, the temporal coherence branch…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Kai Xu , Longyin Wen , Guorong Li , Liefeng Bo , Qingming Huang

Video object segmentation aims at accurately segmenting the target object regions across consecutive frames. It is technically challenging for coping with complicated factors (e.g., shape deformations, occlusion and out of the lens). Recent…

Computer Vision and Pattern Recognition · Computer Science 2019-07-03 Peng Sun , Peiwen Lin , Guangliang Cheng , Jianping Shi , Jiawan Zhang , Xi Li

We address the problem of retrieving a specific moment from an untrimmed video by natural language. It is a challenging problem because a target moment may take place in the context of other temporal moments in the untrimmed video. Existing…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Songyang Zhang , Houwen Peng , Jianlong Fu , Yijuan Lu , Jiebo Luo

In this paper, we show that transferring knowledge from other domains of video understanding combined with large-scale learning can improve robustness of Video Object Segmentation (VOS) under complex circumstances. Namely, we focus on…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Volodymyr Fedynyak , Yaroslav Romanus , Oles Dobosevych , Igor Babin , Roman Riazantsev

Video Object Segmentation, and video processing in general, has been historically dominated by methods that rely on the temporal consistency and redundancy in consecutive video frames. When the temporal smoothness is suddenly broken, such…

Computer Vision and Pattern Recognition · Computer Science 2018-05-17 Kevis-Kokitsi Maninis , Sergi Caelles , Yuhua Chen , Jordi Pont-Tuset , Laura Leal-Taixé , Daniel Cremers , Luc Van Gool

In this paper, we propose Contextual Guided Segmentation (CGS) framework for video instance segmentation in three passes. In the first pass, i.e., preview segmentation, we propose Instance Re-Identification Flow to estimate main properties…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Trung-Nghia Le , Tam V. Nguyen , Minh-Triet Tran