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Crowd localization plays a crucial role in visual scene understanding towards predicting each pedestrian location in a crowd, thus being applicable to various downstream tasks. However, existing approaches suffer from significant…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Juncheng Wang , Lei Shang , Ziqi Liu , Wang Lu , Xixu Hu , Zhe Hu , Jindong Wang , Shujun Wang

Crowd management technologies that leverage computer vision are widespread in contemporary times. There exists many security-related applications of these methods, including, but not limited to: following the flow of an array of people and…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Soufien Hamrouni , Hakim Ghazzai , Hamid Menouar , Yahya Massoud

This paper addresses the problem of unsupervised domain adaptation on the task of pedestrian detection in crowded scenes. First, we utilize an iterative algorithm to iteratively select and auto-annotate positive pedestrian samples with high…

Computer Vision and Pattern Recognition · Computer Science 2018-02-12 Lihang Liu , Weiyao Lin , Lisheng Wu , Yong Yu , Michael Ying Yang

In recent years, deep neural networks showed their exceeding capabilities in addressing many computer vision tasks including scene flow prediction. However, most of the advances are dependent on the availability of a vast amount of dense…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Katharina Bendig , René Schuster , Didier Stricker

In recent years, significant progress has been made on the research of crowd counting. However, as the challenging scale variations and complex scenes existed in crowds, neither traditional convolution networks nor recent Transformer…

Computer Vision and Pattern Recognition · Computer Science 2022-01-03 Xing Wei , Yuanrui Kang , Jihao Yang , Yunfeng Qiu , Dahu Shi , Wenming Tan , Yihong Gong

The performance of supervised deep learning algorithms depends significantly on the scale, quality and diversity of the data used for their training. Collecting and manually annotating large amount of data can be both time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2021-07-02 C. Symeonidis , P. Nousi , P. Tosidis , K. Tsampazis , N. Passalis , A. Tefas , N. Nikolaidis

Automated scene analysis has been a topic of great interest in computer vision and cognitive science. Recently, with the growth of crowd phenomena in the real world, crowded scene analysis has attracted much attention. However, the visual…

Computer Vision and Pattern Recognition · Computer Science 2015-02-09 Teng Li , Huan Chang , Meng Wang , Bingbing Ni , Richang Hong , Shuicheng Yan

In real-world crowd counting applications, the crowd densities in an image vary greatly. When facing density variation, humans tend to locate and count the targets in low-density regions, and reason the number in high-density regions. We…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Yuehai Chen , Jing Yang , Badong Chen , Shaoyi Du

Employing clustering strategy to assign unlabeled target images with pseudo labels has become a trend for person re-identification (re-ID) algorithms in domain adaptation. A potential limitation of these clustering-based methods is that…

Computer Vision and Pattern Recognition · Computer Science 2021-09-08 Suncheng Xiang , Yuzhuo Fu , Mengyuan Guan , Ting Liu

Data is the engine of modern computer vision, which necessitates collecting large-scale datasets. This is expensive, and guaranteeing the quality of the labels is a major challenge. In this paper, we investigate efficient annotation…

Computer Vision and Pattern Recognition · Computer Science 2021-04-27 Yuan-Hong Liao , Amlan Kar , Sanja Fidler

Crowd-sourcing is an increasingly popular tool for image analysis in animal ecology. Computer vision methods that can utilize crowd-sourced annotations can help scale up analysis further. In this work we study the potential to do so on the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Justin Kay , Catherine M. Foley , Tom Hart

Deep learning occupies an undisputed dominance in crowd counting. In this paper, we propose a novel convolutional neural network (CNN) architecture called SegCrowdNet. Despite the complex background in crowd scenes, the proposeSegCrowdNet…

Computer Vision and Pattern Recognition · Computer Science 2022-04-18 Jiwei Chen , Zengfu Wang

In this dissertation, we investigated and enhanced Deep Learning (DL) techniques for counting objects, like pedestrians, cells or vehicles, in still images or video frames. In particular, we tackled the challenge related to the lack of data…

Computer Vision and Pattern Recognition · Computer Science 2022-06-09 Luca Ciampi

Crowd counting on static images is a challenging problem due to scale variations. Recently deep neural networks have been shown to be effective in this task. However, existing neural-networks-based methods often use the multi-column or…

Computer Vision and Pattern Recognition · Computer Science 2017-02-09 Lingke Zeng , Xiangmin Xu , Bolun Cai , Suo Qiu , Tong Zhang

Localizing individuals in crowds is more in accordance with the practical demands of subsequent high-level crowd analysis tasks than simply counting. However, existing localization based methods relying on intermediate representations…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Qingyu Song , Changan Wang , Zhengkai Jiang , Yabiao Wang , Ying Tai , Chengjie Wang , Jilin Li , Feiyue Huang , Yang Wu

The crowd counting task aims at estimating the number of people located in an image or a frame from videos. Existing methods widely adopt density maps as the training targets to optimize the point-to-point loss. While in testing phase, we…

Computer Vision and Pattern Recognition · Computer Science 2020-05-14 Xiyang Liu , Jie Yang , Wenrui Ding

In this paper, we propose a new agency-guided semi-supervised counting approach. First, we build a learnable auxiliary structure, namely the density agency to bring the recognized foreground regional features close to corresponding density…

Computer Vision and Pattern Recognition · Computer Science 2022-09-08 Hui Lin , Zhiheng Ma , Xiaopeng Hong , Yaowei Wang , Zhou Su

This paper presents a new annotation method called Sparse Annotation (SA) for crowd counting, which reduces human labeling efforts by sparsely labeling individuals in an image. We argue that sparse labeling can reduce the redundancy of full…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Shiwei Zhang , Zhengzheng Wang , Qing Liu , Fei Wang , Wei Ke , Tong Zhang

While the use of artificial intelligence (AI) for medical image analysis is gaining wide acceptance, the expertise, time and cost required to generate annotated data in the medical field are significantly high, due to limited availability…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Abhishek Kushwaha , Sarthak Gupta , Anish Bhanushali , Tathagato Rai Dastidar

To improve performance in visual feature representation from photos or videos for practical applications, we generally require large-scale human-annotated labeled data while training deep neural networks. However, the cost of gathering and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-10 Zhenyuan Lu