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We study video crowd counting, which is to estimate the number of objects (people in this paper) in all the frames of a video sequence. Previous work on crowd counting is mostly on still images. There has been little work on how to properly…

Computer Vision and Pattern Recognition · Computer Science 2021-04-30 Haoyue Bai , S. -H. Gary Chan

This paper proposes a novel approach for crowd counting in low to high density scenarios in static images. Current approaches cannot handle huge crowd diversity well and thus perform poorly in extreme cases, where the crowd density in…

Computer Vision and Pattern Recognition · Computer Science 2020-02-28 Usman Sajid , Hasan Sajid , Hongcheng Wang , Guanghui Wang

To promote the developments of object detection, tracking and counting algorithms in drone-captured videos, we construct a benchmark with a new drone-captured largescale dataset, named as DroneCrowd, formed by 112 video clips with 33,600 HD…

Computer Vision and Pattern Recognition · Computer Science 2021-05-07 Longyin Wen , Dawei Du , Pengfei Zhu , Qinghua Hu , Qilong Wang , Liefeng Bo , Siwei Lyu

Multi-person pose estimation is fundamental to many computer vision tasks and has made significant progress in recent years. However, few previous methods explored the problem of pose estimation in crowded scenes while it remains…

Computer Vision and Pattern Recognition · Computer Science 2019-01-24 Jiefeng Li , Can Wang , Hao Zhu , Yihuan Mao , Hao-Shu Fang , Cewu Lu

In this article, we propose a simulated crowd counting dataset CrowdX, which has a large scale, accurate labeling, parameterized realization, and high fidelity. The experimental results of using this dataset as data enhancement show that…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Yi Hou , Chengyang Li , Yuheng Lu , Liping Zhu , Yuan Li , Huizhu Jia , Xiaodong Xie

The rapid development in visual crowd analysis shows a trend to count people by positioning or even detecting, rather than simply summing a density map. It also enlightens us back to the essence of the field, detection to count, which can…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Qi wang , Tao Han , Junyu Gao , Yuan Yuan , Xuelong Li

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density. While effective, these data-driven approaches rely on large amount of data annotation to achieve good performance, which stops…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Weizhe Liu , Nikita Durasov , Pascal Fua

Crowd counting is to estimate the number of objects (e.g., people or vehicles) in an image of unconstrained congested scenes. Designing a general crowd counting algorithm applicable to a wide range of crowd images is challenging, mainly due…

Computer Vision and Pattern Recognition · Computer Science 2019-09-10 Haoyue Bai , Song Wen , S. -H. Gary Chan

We address the problem of image-based crowd counting. In particular, we propose a new problem called unlabeled scene-adaptive crowd counting. Given a new target scene, we would like to have a crowd counting model specifically adapted to…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Mahesh Kumar Krishna Reddy , Mrigank Rochan , Yiwei Lu , Yang Wang

Crowd counting and localization are important in applications such as public security and traffic management. Existing methods have achieved impressive results thanks to extensive laborious annotations. This paper propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Yuda Zou , Zelong Liu , Yuliang Gu , Bo Du , Yongchao Xu

Crowd counting is a challenging problem especially in the presence of huge crowd diversity across images and complex cluttered crowd-like background regions, where most previous approaches do not generalize well and consequently produce…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Usman Sajid , Guanghui Wang

Computer vision techniques have been used to produce accurate and generic crowd count estimators in recent years. Due to severe occlusions, appearance variations, perspective distortions and illumination conditions, crowd counting is a very…

Computer Vision and Pattern Recognition · Computer Science 2017-10-27 Haiyan Yao , Kang Han , Wanggen Wan , Li Hou

We present a novel procedural framework to generate an arbitrary number of labeled crowd videos (LCrowdV). The resulting crowd video datasets are used to design accurate algorithms or training models for crowded scene understanding. Our…

Computer Vision and Pattern Recognition · Computer Science 2016-07-05 Ernest Cheung , Tsan Kwong Wong , Aniket Bera , Xiaogang Wang , Dinesh Manocha

This paper proposes a crowd counting method. Crowd counting is difficult because of large appearance changes of a target which caused by density and scale changes. Conventional crowd counting methods generally utilize one predictor (e,g.,…

Computer Vision and Pattern Recognition · Computer Science 2017-03-29 Shohei Kumagai , Kazuhiro Hotta , Takio Kurita

Multimodal Large Language Models (MLLMs) have made rapid progress in single-video understanding, yet their ability to reason across multiple independent video streams remains poorly understood. Existing multi-video benchmarks rely largely…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Sara Ghazanfari , Siddharth Garg , Prashanth Krishnamurthy , Farshad Khorrami

Crowd simulation is a central topic in several fields including graphics. To achieve high-fidelity simulations, data has been increasingly relied upon for analysis and simulation guidance. However, the information in real-world data is…

Graphics · Computer Science 2020-04-30 Feixiang He , Yuanhang Xiang , Xi Zhao , He Wang

Crowd counting presents enormous challenges in the form of large variation in scales within images and across the dataset. These issues are further exacerbated in highly congested scenes. Approaches based on straightforward fusion of…

Computer Vision and Pattern Recognition · Computer Science 2019-08-30 Vishwanath A Sindagi , Vishal M. Patel

Multi-view crowd counting and localization fuse the input multi-views for estimating the crowd number or locations on the ground. Existing methods mainly focus on accurately predicting on the crowd shown in the input views, which neglects…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Qi Zhang , Bin Li , Antoni B. Chan , Hui Huang

Crowd counting on the drone platform is an interesting topic in computer vision, which brings new challenges such as small object inference, background clutter and wide viewpoint. However, there are few algorithms focusing on crowd counting…

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