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Object detection has achieved substantial progress in the last decade. However, detecting novel classes with only few samples remains challenging, since deep learning under low data regime usually leads to a degraded feature space. Existing…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Yuhang Cao , Jiaqi Wang , Ying Jin , Tong Wu , Kai Chen , Ziwei Liu , Dahua Lin

This paper introduces the task of few-shot common action localization in time and space. Given a few trimmed support videos containing the same but unknown action, we strive for spatio-temporal localization of that action in a long…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Pengwan Yang , Pascal Mettes , Cees G. M. Snoek

Few-shot object detection has been extensively investigated by incorporating meta-learning into region-based detection frameworks. Despite its success, the said paradigm is constrained by several factors, such as (i) low-quality region…

Computer Vision and Pattern Recognition · Computer Science 2021-09-21 Gongjie Zhang , Zhipeng Luo , Kaiwen Cui , Shijian Lu

Few-shot segmentation (FSS) aims to rapidly learn novel class concepts from limited examples to segment specific targets in unseen images, and has been widely applied in areas such as medical diagnosis and industrial inspection. However,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Qianyu Guo , Jingrong Wu , Jieji Ren , Weifeng Ge , Wenqiang Zhang

Cross-domain few-shot segmentation (CD-FSS) is proposed to pre-train the model on a source-domain dataset with sufficient samples, and then transfer the model to target-domain datasets where only a few samples are available for efficient…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Jintao Tong , Ran Ma , Yixiong Zou , Guangyao Chen , Yuhua Li , Ruixuan Li

Multi-Camera Multi-Object Tracking (MC-MOT) utilizes information from multiple views to better handle problems with occlusion and crowded scenes. Recently, the use of graph-based approaches to solve tracking problems has become very…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Cheng-Che Cheng , Min-Xuan Qiu , Chen-Kuo Chiang , Shang-Hong Lai

Face analysis has been studied from different angles to infer emotion, poses, shapes, and landmarks. Traditionally RGB cameras are used, yet for fine-grained tasks standard sensors might not be up to the task due to their latency, making it…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Luca Cultrera , Federico Becattini , Lorenzo Berlincioni , Claudio Ferrari , Alberto Del Bimbo

In this paper, we address the challenging problem of action recognition, using event-based cameras. To recognise most gestural actions, often higher temporal precision is required for sampling visual information. Actions are defined by…

Computer Vision and Pattern Recognition · Computer Science 2019-03-19 Rohan Ghosh , Anupam Gupta , Andrei Nakagawa , Alcimar Soares , Nitish Thakor

Detecting deepfake videos is highly challenging given the complexity of characterizing spatio-temporal artifacts. Most existing methods rely on binary classifiers trained using real and fake image sequences, therefore hindering their…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Dat Nguyen , Marcella Astrid , Anis Kacem , Enjie Ghorbel , Djamila Aouada

Few-shot segmentation (FSS) is a dense prediction task that aims to infer the pixel-wise labels of unseen classes using only a limited number of annotated images. The key challenge in FSS is to classify the labels of query pixels using…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Wenbo Xu , Huaxi Huang , Ming Cheng , Litao Yu , Qiang Wu , Jian Zhang

Deep neural networks based methods have been proved to achieve outstanding performance on object detection and classification tasks. Despite significant performance improvement, due to the deep structures, they still require prohibitive…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Mohammad Farhadi , Yezhou Yang

The Few-Shot Segmentation (FSS) aims to accomplish the novel class segmentation task with a few annotated images. Current FSS research based on meta-learning focus on designing a complex interaction mechanism between the query and support…

Computer Vision and Pattern Recognition · Computer Science 2024-01-10 Jing Wang , Jinagyun Li , Chen Chen , Yisi Zhang , Haoran Shen , Tianxiang Zhang

Egocentric action recognition is gaining significant attention in the field of human action recognition. In this paper, we address data scarcity issue in egocentric action recognition from a compositional generalization perspective. To…

Computer Vision and Pattern Recognition · Computer Science 2023-10-17 Haoran Wang , Qinghua Cheng , Baosheng Yu , Yibing Zhan , Dapeng Tao , Liang Ding , Haibin Ling

This paper studies introducing viewpoint invariant feature representations in existing action recognition architecture. Despite significant progress in action recognition, efficiently handling geometric variations in large-scale datasets…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Jinhui Ye , Junwei Liang

Current techniques for explainable AI have been applied with some success to image processing. The recent rise of research in video processing has called for similar work n deconstructing and explaining spatio-temporal models. While many…

Machine Learning · Computer Science 2019-08-15 Liam Hiley , Alun Preece , Yulia Hicks , David Marshall , Harrison Taylor

Camouflaged object detection and segmentation is a new and challenging research topic in computer vision. There is a serious issue of lacking data on concealed objects such as camouflaged animals in natural scenes. In this paper, we address…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 Thanh-Danh Nguyen , Anh-Khoa Nguyen Vu , Nhat-Duy Nguyen , Vinh-Tiep Nguyen , Thanh Duc Ngo , Thanh-Toan Do , Minh-Triet Tran , Tam V. Nguyen

Despite great progress achieved by transformer in various vision tasks, it is still underexplored for skeleton-based action recognition with only a few attempts. Besides, these methods directly calculate the pair-wise global self-attention…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Zhimin Gao , Peitao Wang , Pei Lv , Xiaoheng Jiang , Qidong Liu , Pichao Wang , Mingliang Xu , Wanqing Li

We present a novel hierarchical spatiotemporal action tokenizer for in-context imitation learning. We first propose a hierarchical approach, which consists of two successive levels of vector quantization. In particular, the lower level…

Learning from limited data is challenging because data scarcity leads to a poor generalization of the trained model. A classical global pooled representation will probably lose useful local information. Many few-shot learning methods have…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Haoxing Chen , Huaxiong Li , Yaohui Li , Chunlin Chen

Action detection is an essential and challenging task, especially for densely labelled datasets of untrimmed videos. The temporal relation is complex in those datasets, including challenges like composite action, and co-occurring action.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Rui Dai , Srijan Das , Kumara Kahatapitiya , Michael S. Ryoo , Francois Bremond