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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.…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Rex Liu , Huanle Zhang , Hamed Pirsiavash , Xin Liu

Convolutional neural networks (CNNs) are one of the driving forces for the advancement of computer vision. Despite their promising performances on many tasks, CNNs still face major obstacles on the road to achieving ideal machine…

计算机视觉与模式识别 · 计算机科学 2018-02-14 Boyang Deng , Qing Liu , Siyuan Qiao , Alan Yuille

In this paper, we introduce 3D-GMNet, a deep neural network for 3D object shape reconstruction from a single image. As the name suggests, 3D-GMNet recovers 3D shape as a Gaussian mixture. In contrast to voxels, point clouds, or meshes, a…

计算机视觉与模式识别 · 计算机科学 2020-08-18 Kohei Yamashita , Shohei Nobuhara , Ko Nishino

The 3D shapes of faces are well known to be discriminative. Yet despite this, they are rarely used for face recognition and always under controlled viewing conditions. We claim that this is a symptom of a serious but often overlooked…

计算机视觉与模式识别 · 计算机科学 2016-12-16 Anh Tuan Tran , Tal Hassner , Iacopo Masi , Gerard Medioni

Sketch-based modeling strives to bring the ease and immediacy of drawing to the 3D world. However, while drawings are easy for humans to create, they are very challenging for computers to interpret due to their sparsity and ambiguity. We…

图形学 · 计算机科学 2018-06-20 Johanna Delanoy , Mathieu Aubry , Phillip Isola , Alexei A. Efros , Adrien Bousseau

As a pioneering work, PointContrast conducts unsupervised 3D representation learning via leveraging contrastive learning over raw RGB-D frames and proves its effectiveness on various downstream tasks. However, the trend of large-scale…

计算机视觉与模式识别 · 计算机科学 2023-03-27 Xiaoyang Wu , Xin Wen , Xihui Liu , Hengshuang Zhao

Deep autoregressive models have shown state-of-the-art performance in density estimation for natural images on large-scale datasets such as ImageNet. However, such models require many thousands of gradient-based weight updates and unique…

神经与进化计算 · 计算机科学 2018-03-01 Scott Reed , Yutian Chen , Thomas Paine , Aäron van den Oord , S. M. Ali Eslami , Danilo Rezende , Oriol Vinyals , Nando de Freitas

In the object detection task, CNN (Convolutional neural networks) models always need a large amount of annotated examples in the training process. To reduce the dependency of expensive annotations, few-shot object detection has become an…

计算机视觉与模式识别 · 计算机科学 2021-01-01 Yuewen Li , Wenquan Feng , Shuchang Lyu , Qi Zhao , Xuliang Li

Few-shot learning aims to train models that can be generalized to novel classes with only a few samples. Recently, a line of works are proposed to enhance few-shot learning with accessible semantic information from class names. However,…

机器学习 · 计算机科学 2023-07-11 Zihao Jiang , Yunkai Dang , Dong Pang , Huishuai Zhang , Weiran Huang

Most recent few-shot learning approaches are based on meta-learning with episodic training. However, prior studies encounter two crucial problems: (1) \textit{the presence of inductive bias}, and (2) \textit{the occurrence of catastrophic…

多媒体 · 计算机科学 2024-09-18 Bingzhi Chen , Haoming Zhou , Yishu Liu , Biqing Zeng , Jiahui Pan , Guangming Lu

Most previous few-shot learning algorithms are based on meta-training with fake few-shot tasks as training samples, where large labeled base classes are required. The trained model is also limited by the type of tasks. In this paper we…

计算机视觉与模式识别 · 计算机科学 2020-08-25 Jianyi Li , Guizhong Liu

Convolutional Neural Networks (CNN) have been regarded as a powerful class of models for image recognition problems. Nevertheless, it is not trivial when utilizing a CNN for learning spatio-temporal video representation. A few studies have…

计算机视觉与模式识别 · 计算机科学 2017-11-29 Zhaofan Qiu , Ting Yao , Tao Mei

3D point cloud semantic and instance segmentation is crucial and fundamental for 3D scene understanding. Due to the complex structure, point sets are distributed off balance and diversely, which appears as both category imbalance and…

计算机视觉与模式识别 · 计算机科学 2020-01-07 Tong He , Dong Gong , Zhi Tian , Chunhua Shen

We present a conceptually simple, flexible, and general framework for few-shot learning, where a classifier must learn to recognise new classes given only few examples from each. Our method, called the Relation Network (RN), is trained…

计算机视觉与模式识别 · 计算机科学 2018-03-28 Flood Sung , Yongxin Yang , Li Zhang , Tao Xiang , Philip H. S. Torr , Timothy M. Hospedales

Few-shot class incremental learning implies the model to learn new classes while retaining knowledge of previously learned classes with a small number of training instances. Existing frameworks typically freeze the parameters of the…

计算机视觉与模式识别 · 计算机科学 2025-01-17 Parinita Nema , Vinod K Kurmi

Contrastive learning has emerged as a promising paradigm for 3D open-world understanding, i.e., aligning point cloud representation to image and text embedding space individually. In this paper, we introduce MixCon3D, a simple yet effective…

计算机视觉与模式识别 · 计算机科学 2024-04-08 Yipeng Gao , Zeyu Wang , Wei-Shi Zheng , Cihang Xie , Yuyin Zhou

Meta-learning is widely used for few-shot slot tagging in task of few-shot learning. The performance of existing methods is, however, seriously affected by \textit{sample forgetting issue}, where the model forgets the historically learned…

人工智能 · 计算机科学 2023-09-12 Hongru Wang , Zezhong Wang , Wai Chung Kwan , Kam-Fai Wong

Multi-view sequential learning is a fundamental problem in machine learning dealing with multi-view sequences. In a multi-view sequence, there exists two forms of interactions between different views: view-specific interactions and…

机器学习 · 计算机科学 2018-02-06 Amir Zadeh , Paul Pu Liang , Navonil Mazumder , Soujanya Poria , Erik Cambria , Louis-Philippe Morency

Modern deep learning models have revolutionized the field of computer vision. But, a significant drawback of most of these models is that they require a large number of labelled examples to generalize properly. Recent developments in…

计算机视觉与模式识别 · 计算机科学 2020-08-04 Atmadeep Banerjee

Reconstructing 3D cone beam computed tomography (CBCT) images from a limited set of projections is an important inverse problem in many imaging applications from medicine to inertial confinement fusion (ICF). The performance of traditional…

图像与视频处理 · 电气工程与系统科学 2025-10-06 Xiaojian Xu , Marc Klasky , Michael T. McCann , Jason Hu , Jeffrey A. Fessler