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Facial expressions are one of the most powerful ways for depicting specific patterns in human behavior and describing human emotional state. Despite the impressive advances of affective computing over the last decade, automatic video-based…

计算机视觉与模式识别 · 计算机科学 2021-01-18 Thomas Teixeira , Eric Granger , Alessandro Lameiras Koerich

Convolutional neural networks (CNN) have enabled significant improvements in pedestrian detection owing to the strong representation ability of the CNN features. Recently, aggregating features from multiple layers of a CNN has been…

计算机视觉与模式识别 · 计算机科学 2020-05-12 Tianrui Liu , Mohamed Elmikaty , Tania Stathaki

Pedestrian detection plays an important role in many applications such as autonomous driving. We propose a method that explores semantic segmentation results as self-attention cues to significantly improve the pedestrian detection…

计算机视觉与模式识别 · 计算机科学 2019-06-07 Chengju Zhou , Meiqing Wu , Siew-Kei Lam

In this project, we adapt high-performing CNN architectures to differentiate between scenes with and without abandoned luggage. Using frames from two video datasets, we compare the results of training different architectures on each dataset…

计算机视觉与模式识别 · 计算机科学 2018-09-11 Utkarsh Contractor , Chinmayi Dixit , Deepti Mahajan

In this article we describe a new convolutional neural network (CNN) to classify 3D point clouds of urban or indoor scenes. Solutions are given to the problems encountered working on scene point clouds, and a network is described that…

计算机视觉与模式识别 · 计算机科学 2018-04-11 Xavier Roynard , Jean-Emmanuel Deschaud , François Goulette

In this paper, we study the challenging problem of categorizing videos according to high-level semantics such as the existence of a particular human action or a complex event. Although extensive efforts have been devoted in recent years,…

计算机视觉与模式识别 · 计算机科学 2018-02-23 Yu-Gang Jiang , Zuxuan Wu , Jun Wang , Xiangyang Xue , Shih-Fu Chang

In this paper, we propose a novel approach that learns to sequentially attend to different Convolutional Neural Networks (CNN) layers (i.e., ``what'' feature abstraction to attend to) and different spatial locations of the selected feature…

计算机视觉与模式识别 · 计算机科学 2019-06-03 Tony Joseph , Konstantinos G. Derpanis , Faisal Z. Qureshi

The dominant paradigm for video-based action segmentation is composed of two steps: first, for each frame, compute low-level features using Dense Trajectories or a Convolutional Neural Network that encode spatiotemporal information locally,…

计算机视觉与模式识别 · 计算机科学 2016-08-31 Colin Lea , Rene Vidal , Austin Reiter , Gregory D. Hager

Video coding is a critical step in all popular methods of streaming video. Marked progress has been made in video quality, compression, and computational efficiency. Recently, there has been an interest in finding ways to apply techniques…

图像与视频处理 · 电气工程与系统科学 2019-05-14 Everett Fall , Kai-wei Chang , Liang-Gee Chen

Natural disasters act as a serious threat globally, requiring effective and efficient disaster management and recovery. This paper focuses on classifying natural disaster images using Convolutional Neural Networks (CNNs). Multiple CNN…

计算机视觉与模式识别 · 计算机科学 2023-11-23 Archit Rathod , Veer Pariawala , Mokshit Surana , Kumkum Saxena

Two dimensional (2D) peak finding is a common practice in data analysis for physics experiments, which is typically achieved by computing the local derivatives. However, this method is inherently unstable when the local landscape is…

数据分析、统计与概率 · 物理学 2020-04-22 Han Peng , Xiang Gao , Yu He , Yiwei Li , Yuchen Ji , Chuhang Liu , Sandy A. Ekahana , Ding Pei , Zhongkai Liu , Zhixun Shen , Yulin Chen

Determining the material category of a surface from an image is a demanding task in perception that is drawing increasing attention. Following the recent remarkable results achieved for image classification and object detection utilising…

计算机视觉与模式识别 · 计算机科学 2017-03-17 Grigorios Kalliatakis , Georgios Stamatiadis , Shoaib Ehsan , Ales Leonardis , Juergen Gall , Anca Sticlaru , Klaus D. McDonald-Maier

Feature detectors and descriptors have been successfully used for various computer vision tasks, such as video object tracking and content-based image retrieval. Many methods use image gradients in different stages of the…

计算机视觉与模式识别 · 计算机科学 2021-03-18 Umut Özaydın , Theodoros Georgiou , Michael Lew

Convolutional neural networks (CNNs) can potentially provide powerful tools for classifying and identifying patterns in climate and environmental data. However, because of the inherent complexities of such data, which are often…

大气与海洋物理 · 物理学 2020-03-03 Ashesh Chattopadhyay , Pedram Hassanzadeh , Saba Pasha

Over the past decade deep learning has revolutionized the field of computer vision, with convolutional neural network models proving to be very effective for image classification benchmarks. However, a fundamental theoretical questions…

计算机视觉与模式识别 · 计算机科学 2023-07-04 Vinoth Nandakumar , Arush Tagade , Tongliang Liu

The computer vision community has witnessed recent advances in scene categorization from images, with the state-of-the art systems now achieving impressive recognition rates on challenging benchmarks such as the Places365 dataset. Such…

计算机视觉与模式识别 · 计算机科学 2018-11-27 Morteza Rezanejad , Gabriel Downs , John Wilder , Dirk B. Walther , Allan Jepson , Sven Dickinson , Kaleem Siddiqi

The task of crowd counting is to automatically estimate the pedestrian number in crowd images. To cope with the scale and perspective changes that commonly exist in crowd images, state-of-the-art approaches employ multi-column CNN…

计算机视觉与模式识别 · 计算机科学 2018-02-08 Lu Zhang , Miaojing Shi , Qiaobo Chen

Joint segmentation and classification of fine-grained actions is important for applications of human-robot interaction, video surveillance, and human skill evaluation. However, despite substantial recent progress in large-scale action…

计算机视觉与模式识别 · 计算机科学 2016-10-03 Colin Lea , Austin Reiter , Rene Vidal , Gregory D. Hager

Previous work has shown that feature maps of deep convolutional neural networks (CNNs) can be interpreted as feature representation of a particular image region. Features aggregated from these feature maps have been exploited for image…

计算机视觉与模式识别 · 计算机科学 2016-11-08 Jiedong Hao , Jing Dong , Wei Wang , Tieniu Tan

The dominant approach for surface defect detection is the use of hand-crafted feature-based methods. However, this falls short when conditions vary that affect extracted images. So, in this paper, we sought to determine how well several…

计算机视觉与模式识别 · 计算机科学 2021-10-29 Vasco Lopes , Luís A. Alexandre