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Video Question Answering is a challenging problem in visual information retrieval, which provides the answer to the referenced video content according to the question. However, the existing visual question answering approaches mainly tackle…

Computer Vision and Pattern Recognition · Computer Science 2017-07-21 Yunan Ye , Zhou Zhao , Yimeng Li , Long Chen , Jun Xiao , Yueting Zhuang

In recent years, video-based person Re-Identification (ReID) has gained attention for its ability to leverage spatiotemporal cues to match individuals across non-overlapping cameras. However, current methods struggle with high-difficulty…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Shogo Hamano , Shunya Wakasugi , Tatsuhito Sato , Sayaka Nakamura

In this paper, we investigate the challenging task of person re-identification from a new perspective and propose an end-to-end attention-based architecture for few-shot re-identification through meta-learning. The motivation for this task…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Alireza Rahimpour , Hairong Qi

In this work, we propose several attention formulations for multivariate sequence data. We build on top of the recently introduced 2D-Attention and reformulate the attention learning methodology by quantifying the relevance of…

Computer Vision and Pattern Recognition · Computer Science 2022-01-27 Kateryna Chumachenko , Alexandros Iosifidis , Moncef Gabbouj

Human video instance segmentation plays an important role in computer understanding of human activities and is widely used in video processing, video surveillance, and human modeling in virtual reality. Most current VIS methods are based on…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Lu Cheng , Mingbo Zhao

The ability to identify and temporally segment fine-grained human actions throughout a video is crucial for robotics, surveillance, education, and beyond. Typical approaches decouple this problem by first extracting local spatiotemporal…

Computer Vision and Pattern Recognition · Computer Science 2016-11-17 Colin Lea , Michael D. Flynn , Rene Vidal , Austin Reiter , Gregory D. Hager

This paper presents a novel method to involve both spatial and temporal features for semantic video segmentation. Current work on convolutional neural networks(CNNs) has shown that CNNs provide advanced spatial features supporting a very…

Computer Vision and Pattern Recognition · Computer Science 2016-09-05 Mohsen Fayyaz , Mohammad Hajizadeh Saffar , Mohammad Sabokrou , Mahmood Fathy , Reinhard Klette , Fay Huang

While convolutional neural networks have gained impressive success recently in solving structured prediction problems such as semantic segmentation, it remains a challenge to differentiate individual object instances in the scene. Instance…

Machine Learning · Computer Science 2017-07-14 Mengye Ren , Richard S. Zemel

The challenge of person re-identification (re-id) is to match individual images of the same person captured by different non-overlapping camera views against significant and unknown cross-view feature distortion. While a large number of…

Computer Vision and Pattern Recognition · Computer Science 2017-03-28 Ying-Cong Chen , Xiatian Zhu , Wei-Shi Zheng , Jian-Huang Lai

Recent cutting-edge feature aggregation paradigms for video object detection rely on inferring feature correspondence. The feature correspondence estimation problem is fundamentally difficult due to poor image quality, motion blur, etc, and…

Computer Vision and Pattern Recognition · Computer Science 2019-07-12 Hao Luo , Lichao Huang , Han Shen , Yuan Li , Chang Huang , Xinggang Wang

Person Re-identification (re-id) aims to match people across non-overlapping camera views in a public space. It is a challenging problem because many people captured in surveillance videos wear similar clothes. Consequently, the differences…

Computer Vision and Pattern Recognition · Computer Science 2017-09-18 Xuelin Qian , Yanwei Fu , Yu-Gang Jiang , Tao Xiang , Xiangyang Xue

In this paper, we propose an attention pyramid method for person re-identification. Unlike conventional attention-based methods which only learn a global attention map, our attention pyramid exploits the attention regions in a multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2021-09-22 Guangyi Chen , Tianpei Gu , Jiwen Lu , Jin-An Bao , Jie Zhou

This thesis explore different approaches using Convolutional and Recurrent Neural Networks to classify and temporally localize activities on videos, furthermore an implementation to achieve it has been proposed. As the first step, features…

Computer Vision and Pattern Recognition · Computer Science 2017-03-06 Alberto Montes , Amaia Salvador , Santiago Pascual , Xavier Giro-i-Nieto

Video-based person re-identification (Re-ID) is an important computer vision task. The batch-hard triplet loss frequently used in video-based person Re-ID suffers from the Distance Variance among Different Positives (DVDP) problem. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-06-16 Zhiyuan Chen , Annan Li , Shilu Jiang , Yunhong Wang

The attention mechanism provides a sequential prediction framework for learning spatial models with enhanced implicit temporal consistency. In this work, we show a systematic design (from 2D to 3D) for how conventional networks and other…

Computer Vision and Pattern Recognition · Computer Science 2021-03-05 Ruixu Liu , Ju Shen , He Wang , Chen Chen , Sen-ching Cheung , Vijayan K. Asari

Person re-identification aims to associate images of the same person over multiple non-overlapping camera views at different times. Depending on the human operator, manual re-identification in large camera networks is highly time consuming…

Computer Vision and Pattern Recognition · Computer Science 2019-11-19 Shubham Kumar Singh , Krishna P Miyapuram , Shanmuganathan Raman

Person re-identification (Re-ID) aims to match pedestrians under dis-joint cameras. Most Re-ID methods formulate it as visual representation learning and image search, and its accuracy is consequently affected greatly by the search space.…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Min Ren , Lingxiao He , Xingyu Liao , Wu Liu , Yunlong Wang , Tieniu Tan

We addressed the challenging task of video question answering, which requires machines to answer questions about videos in a natural language form. Previous state-of-the-art methods attempt to apply spatio-temporal attention mechanism on…

Computer Vision and Pattern Recognition · Computer Science 2020-08-21 Deng Huang , Peihao Chen , Runhao Zeng , Qing Du , Mingkui Tan , Chuang Gan

Learning to re-identify or retrieve a group of people across non-overlapped camera systems has important applications in video surveillance. However, most existing methods focus on (single) person re-identification (re-id), ignoring the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-30 Yichao Yan , Jie Qin , Bingbing Ni , Jiaxin Chen , Li Liu , Fan Zhu , Wei-Shi Zheng , Xiaokang Yang , Ling Shao

Analyzing human motion is a challenging task with a wide variety of applications in computer vision and in graphics. One such application, of particular importance in computer animation, is the retargeting of motion from one performer to…

Computer Vision and Pattern Recognition · Computer Science 2019-05-13 Kfir Aberman , Rundi Wu , Dani Lischinski , Baoquan Chen , Daniel Cohen-Or