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Related papers: Large-scale Robustness Analysis of Video Action Re…

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Video transformers have recently emerged as a competitive alternative to 3D CNNs for video understanding. However, due to their large number of parameters and reduced inductive biases, these models require supervised pretraining on…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Jue Wang , Gedas Bertasius , Du Tran , Lorenzo Torresani

Although a substantial amount of studies is dedicated to morph detection, most of them fail to generalize for morph faces outside of their training paradigm. Moreover, recent morph detection methods are highly vulnerable to adversarial…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Hossein Kashiani , Shoaib Meraj Sami , Sobhan Soleymani , Nasser M. Nasrabadi

Deep neural networks, albeit their great success on feature learning in various computer vision tasks, are usually considered as impractical for online visual tracking because they require very long training time and a large number of…

Computer Vision and Pattern Recognition · Computer Science 2016-05-04 Hanxi Li , Yi Li , Fatih Porikli

Analyzing videos of human actions involves understanding the temporal relationships among video frames. State-of-the-art action recognition approaches rely on traditional optical flow estimation methods to pre-compute motion information for…

Computer Vision and Pattern Recognition · Computer Science 2018-10-31 Yi Zhu , Zhenzhong Lan , Shawn Newsam , Alexander G. Hauptmann

Due to the fast processing-speed and robustness it can achieve, skeleton-based action recognition has recently received the attention of the computer vision community. The recent Convolutional Neural Network (CNN)-based methods have shown…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Han Chen , Yifan Jiang , Hanseok Ko

Action recognition has been heavily employed in many applications such as autonomous vehicles, surveillance, etc, where its robustness is a primary concern. In this paper, we examine the robustness of state-of-the-art action recognizers…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 He Wang , Feixiang He , Zhexi Peng , Tianjia Shao , Yong-Liang Yang , Kun Zhou , David Hogg

The vision community is witnessing a modeling shift from CNNs to Transformers, where pure Transformer architectures have attained top accuracy on the major video recognition benchmarks. These video models are all built on Transformer layers…

Computer Vision and Pattern Recognition · Computer Science 2021-06-25 Ze Liu , Jia Ning , Yue Cao , Yixuan Wei , Zheng Zhang , Stephen Lin , Han Hu

Action recognition has seen a dramatic performance improvement in the last few years. Most of the current state-of-the-art literature either aims at improving performance through changes to the backbone CNN network, or they explore…

Computer Vision and Pattern Recognition · Computer Science 2019-08-22 Brais Martinez , Davide Modolo , Yuanjun Xiong , Joseph Tighe

Transformers, composed of multiple self-attention layers, hold strong promises toward a generic learning primitive applicable to different data modalities, including the recent breakthroughs in computer vision achieving state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Sayak Paul , Pin-Yu Chen

Diffusion models have gained significant attention for high-fidelity image generation. Our work investigates the potential of exploiting diffusion models for adversarial robustness in image classification and object detection. Adversarial…

Image and Video Processing · Electrical Eng. & Systems 2025-11-05 Mika Yagoda , Shady Abu-Hussein , Raja Giryes

Most action recognition models today are highly parameterized, and evaluated on datasets with appearance-wise distinct classes. It has also been shown that 2D Convolutional Neural Networks (CNNs) tend to be biased toward texture rather than…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Sofia Broomé , Ernest Pokropek , Boyu Li , Hedvig Kjellström

Even with the recent advances in convolutional neural networks (CNN) in various visual recognition tasks, the state-of-the-art action recognition system still relies on hand crafted motion feature such as optical flow to achieve the best…

Computer Vision and Pattern Recognition · Computer Science 2018-02-20 Joe Yue-Hei Ng , Jonghyun Choi , Jan Neumann , Larry S. Davis

For action recognition learning, 2D CNN-based methods are efficient but may yield redundant features due to applying the same 2D convolution kernel to each frame. Recent efforts attempt to capture motion information by establishing…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Mingyu Wu , Boyuan Jiang , Donghao Luo , Junchi Yan , Yabiao Wang , Ying Tai , Chengjie Wang , Jilin Li , Feiyue Huang , Xiaokang Yang

With the great capabilities of deep classifiers for radar data processing come the risks of learning dataset-specific features that do not generalize well. In this work, the robustness of two deep convolutional architectures, trained and…

Computer Vision and Pattern Recognition · Computer Science 2024-02-23 Mikolaj Czerkawski , Carmine Clemente , Craig Michie , Christos Tachtatzis

Fine-grained action recognition is a challenging task in computer vision. As fine-grained datasets have small inter-class variations in spatial and temporal space, fine-grained action recognition model requires good temporal reasoning and…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Mei Chee Leong , Haosong Zhang , Hui Li Tan , Liyuan Li , Joo Hwee Lim

This paper strives to recognize individual actions and group activities from videos. While existing solutions for this challenging problem explicitly model spatial and temporal relationships based on location of individual actors, we…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Kirill Gavrilyuk , Ryan Sanford , Mehrsan Javan , Cees G. M. Snoek

Human action recognition has recently become one of the popular research topics in the computer vision community. Various 3D-CNN based methods have been presented to tackle both the spatial and temporal dimensions in the task of video…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Thanh-Dat Truong , Quoc-Huy Bui , Chi Nhan Duong , Han-Seok Seo , Son Lam Phung , Xin Li , Khoa Luu

Due to the increase in computational resources and accessibility of data, an increase in large, deep learning models trained on copious amounts of multi-modal data using self-supervised or semi-supervised learning have emerged. These…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Madeline Chantry Schiappa , Shehreen Azad , Sachidanand VS , Yunhao Ge , Ondrej Miksik , Yogesh S. Rawat , Vibhav Vineet

Non-adversarial robustness, also known as natural robustness, is a property of deep learning models that enables them to maintain performance even when faced with distribution shifts caused by natural variations in data. However, achieving…

Machine Learning · Computer Science 2023-05-25 Gorana Gojić , Vladimir Vincan , Ognjen Kundačina , Dragiša Mišković , Dinu Dragan

Existing image recognition techniques based on convolutional neural networks (CNNs) basically assume that the training and test datasets are sampled from i.i.d distributions. However, this assumption is easily broken in the real world…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Kazuki Adachi , Shin'ya Yamaguchi