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Crowd density level estimation is an essential aspect of crowd safety since it helps to identify areas of probable overcrowding and required conditions. Nowadays, AI systems can help in various sectors. Here for safety purposes or many for…

Cryptography and Security · Computer Science 2024-05-14 Mahira Arefin , Md. Anwar Hussen Wadud , Anichur Rahman

In this paper we advance the state-of-the-art for crowd counting in high density scenes by further exploring the idea of a fully convolutional crowd counting model introduced by (Zhang et al., 2016). Producing an accurate and robust crowd…

Computer Vision and Pattern Recognition · Computer Science 2017-01-18 Mark Marsden , Kevin McGuinness , Suzanne Little , Noel E. O'Connor

Perspective distortions and crowd variations make crowd counting a challenging task in computer vision. To tackle it, many previous works have used multi-scale architecture in deep neural networks (DNNs). Multi-scale branches can be either…

Computer Vision and Pattern Recognition · Computer Science 2023-07-19 Zhipeng Du , Miaojing Shi , Jiankang Deng , Stefanos Zafeiriou

Forecasting the flow of crowds is of great importance to traffic management and public safety, yet a very challenging task affected by many complex factors, such as inter-region traffic, events and weather. In this paper, we propose a…

Artificial Intelligence · Computer Science 2017-01-11 Junbo Zhang , Yu Zheng , Dekang Qi

Crowd localization, predicting head positions, is a more practical and high-level task than simply counting. Existing methods employ pseudo-bounding boxes or pre-designed localization maps, relying on complex post-processing to obtain the…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Dingkang Liang , Wei Xu , Xiang Bai

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

Spatial transformer network has been used in a layered form in conjunction with a convolutional network to enable the model to transform data spatially. In this paper, we propose a combined spatial transformer network (STN) and a Long…

Image and Video Processing · Electrical Eng. & Systems 2019-09-02 Shiyang Feng , Tianyue Chen , Hao Sun

We propose a Spatiotemporal Sampling Network (STSN) that uses deformable convolutions across time for object detection in videos. Our STSN performs object detection in a video frame by learning to spatially sample features from the adjacent…

Computer Vision and Pattern Recognition · Computer Science 2018-07-25 Gedas Bertasius , Lorenzo Torresani , Jianbo Shi

Citywide crowd flow analytics is of great importance to smart city efforts. It aims to model the crowd flow (e.g., inflow and outflow) of each region in a city based on historical observations. Nowadays, Convolutional Neural Networks (CNNs)…

Computer Vision and Pattern Recognition · Computer Science 2020-06-23 Yuxuan Liang , Kun Ouyang , Yiwei Wang , Ye Liu , Junbo Zhang , Yu Zheng , David S. Rosenblum

We develop a human movement trajectory prediction system that incorporates the scene information (Scene-LSTM) as well as human movement trajectories (Pedestrian movement LSTM) in the prediction process within static crowded scenes. We…

Computer Vision and Pattern Recognition · Computer Science 2019-04-16 Huynh Manh , Gita Alaghband

Gatherings of thousands to millions of people frequently occur for an enormous variety of events, and automated counting of these high-density crowds is useful for safety, management, and measuring significance of an event. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Greg Olmschenk , Hao Tang , Zhigang Zhu

Counting people in dense crowds is a demanding task even for humans. This is primarily due to the large variability in appearance of people. Often people are only seen as a bunch of blobs. Occlusions, pose variations and background clutter…

Computer Vision and Pattern Recognition · Computer Science 2018-07-30 Deepak Babu Sam , R. Venkatesh Babu

Dense crowd counting aims to predict thousands of human instances from an image, by calculating integrals of a density map over image pixels. Existing approaches mainly suffer from the extreme density variances. Such density pattern shift…

Computer Vision and Pattern Recognition · Computer Science 2019-08-09 Chenfeng Xu , Kai Qiu , Jianlong Fu , Song Bai , Yongchao Xu , Xiang Bai

Detecting and Counting people in a human crowd from a moving drone present challenging problems that arisefrom the constant changing in the image perspective andcamera angle. In this paper, we test two different state-of-the-art approaches,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Javier Gonzalez-Trejo , Diego Mercado-Ravell

Current crowd-counting models often rely on single-modal inputs, such as visual images or wireless signal data, which can result in significant information loss and suboptimal recognition performance. To address these shortcomings, we…

Computer Vision and Pattern Recognition · Computer Science 2025-04-30 Zhe Cui , Yuli Li , Le-Nam Tran

In this paper, we explore a strong baseline for crowd counting and an unsupervised people localization algorithm based on estimated density maps. Firstly, existing methods achieve state-of-the-art performance based on different backbones…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Liangzi Rong , Chunping Li

Crowd counting remains challenging in variable-density scenes due to scale variations, occlusions, and the high computational cost of existing models. To address these issues, we propose RepSFNet (Reparameterized Single Fusion Network), a…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Mas Nurul Achmadiah , Chi-Chia Sun , Wen-Kai Kuo , Jun-Wei Hsieh

Crowd counting has recently attracted increasing interest in computer vision but remains a challenging problem. In this paper, we propose a trellis encoder-decoder network (TEDnet) for crowd counting, which focuses on generating…

Computer Vision and Pattern Recognition · Computer Science 2019-04-22 Xiaolong Jiang , Zehao Xiao , Baochang Zhang , Xiantong Zhen , Xianbin Cao , David Doermann , Ling Shao

Most existing crowd counting methods require object location-level annotation, i.e., placing a dot at the center of an object. While being simpler than the bounding-box or pixel-level annotation, obtaining this annotation is still…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Yinjie Lei , Yan Liu , Pingping Zhang , Lingqiao Liu

The mainstream crowd counting methods usually utilize the convolution neural network (CNN) to regress a density map, requiring point-level annotations. However, annotating each person with a point is an expensive and laborious process.…

Computer Vision and Pattern Recognition · Computer Science 2022-09-09 Dingkang Liang , Xiwu Chen , Wei Xu , Yu Zhou , Xiang Bai
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