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In this paper, we propose a new query-based detection framework for crowd detection. Previous query-based detectors suffer from two drawbacks: first, multiple predictions will be inferred for a single object, typically in crowded scenes;…

Computer Vision and Pattern Recognition · Computer Science 2022-05-03 Anlin Zheng , Yuang Zhang , Xiangyu Zhang , Xiaojuan Qi , Jian Sun

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density. While effective, deep learning approaches are vulnerable to adversarial attacks, which, in a crowd-counting context, can lead to…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Weizhe Liu , Mathieu Salzmann , Pascal Fua

Crowdsensing is a promising sensing paradigm for smart city applications (e.g., traffic and environment monitoring) with the prevalence of smart mobile devices and advanced network infrastructure. Meanwhile, as tasks are performed by…

Cryptography and Security · Computer Science 2020-11-09 Leye Wang , Han Yu , Xiao Han

For crowded scenes, the accuracy of object-based computer vision methods declines when the images are low-resolution and objects have severe occlusions. Taking counting methods for example, almost all the recent state-of-the-art counting…

Computer Vision and Pattern Recognition · Computer Science 2018-06-14 Di Kang , Zheng Ma , Antoni B. Chan

An important aspect of urban planning is understanding crowd levels at various locations, which typically require the use of physical sensors. Such sensors are potentially costly and time consuming to implement on a large scale. To address…

Social and Information Networks · Computer Science 2020-12-08 Jerome Heng , Junhua Liu , Kwan Hui Lim

In crowd counting datasets, each person is annotated by a point, which is usually the center of the head. And the task is to estimate the total count in a crowd scene. Most of the state-of-the-art methods are based on density map…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Zhiheng Ma , Xing Wei , Xiaopeng Hong , Yihong Gong

Dense crowd counting is a challenging task that demands millions of head annotations for training models. Though existing self-supervised approaches could learn good representations, they require some labeled data to map these features to…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 Deepak Babu Sam , Abhinav Agarwalla , Jimmy Joseph , Vishwanath A. Sindagi , R. Venkatesh Babu , Vishal M. Patel

Safe and efficient navigation through human crowds is an essential capability for mobile robots. Previous work on robot crowd navigation assumes that the dynamics of all agents are known and well-defined. In addition, the performance of…

Robotics · Computer Science 2025-01-28 Shuijing Liu , Peixin Chang , Weihang Liang , Neeloy Chakraborty , Katherine Driggs-Campbell

In order to enhance the real-time performance of convolutional neural networks(CNNs), more and more researchers are focusing on improving the efficiency of CNN. Based on the analysis of some CNN architectures, such as ResNet, DenseNet,…

Computer Vision and Pattern Recognition · Computer Science 2018-03-16 Qiuyu Zhu , Ruixin Zhang

Visual crowd counting estimates the density of the crowd using deep learning models such as convolution neural networks (CNNs). The performance of the model heavily relies on the quality of the training data that constitutes crowd images.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-12 Muhammad Asif Khan , Hamid Menouar , Ridha Hamila

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

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

Counting people or objects with significantly varying scales and densities has attracted much interest from the research community and yet it remains an open problem. In this paper, we propose a simple but an efficient and effective…

Computer Vision and Pattern Recognition · Computer Science 2019-04-18 Lei Liu , Jie Jiang , Wenjing Jia , Saeed Amirgholipour , Michelle Zeibots , Xiangjian He

We propose a multitask approach for crowd counting and person localization in a unified framework. As the detection and localization tasks are well-correlated and can be jointly tackled, our model benefits from a multitask solution by…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Mohsen Zand , Haleh Damirchi , Andrew Farley , Mahdiyar Molahasani , Michael Greenspan , Ali Etemad

Few-shot point cloud semantic segmentation aims to train a model to quickly adapt to new unseen classes with only a handful of support set samples. However, the noise-free assumption in the support set can be easily violated in many…

Computer Vision and Pattern Recognition · Computer Science 2023-09-21 Yating Xu , Na Zhao , Gim Hee Lee

Recently, counting the number of people for crowd scenes is a hot topic because of its widespread applications (e.g. video surveillance, public security). It is a difficult task in the wild: changeable environment, large-range number of…

Computer Vision and Pattern Recognition · Computer Science 2019-03-11 Qi Wang , Junyu Gao , Wei Lin , Yuan Yuan

In recent years, using a deep convolutional neural network (CNN) as a feature encoder (or backbone) is the most commonly observed architectural pattern in several computer vision methods, and semantic segmentation is no exception. The two…

Computer Vision and Pattern Recognition · Computer Science 2021-09-22 Venkata Satya Sai Ajay Daliparthi

Crowd counting from a single image is a challenging task due to high appearance similarity, perspective changes and severe congestion. Many methods only focus on the local appearance features and they cannot handle the aforementioned…

Computer Vision and Pattern Recognition · Computer Science 2019-05-27 Junyu Gao , Qi Wang , Xuelong Li

Automated counting of people in crowd images is a challenging task. The major difficulty stems from the large diversity in the way people appear in crowds. In fact, features available for crowd discrimination largely depend on the crowd…

Computer Vision and Pattern Recognition · Computer Science 2018-07-27 Deepak Babu Sam , Neeraj N Sajjan , R. Venkatesh Babu

While sparse coding-based clustering methods have shown to be successful, their bottlenecks in both efficiency and scalability limit the practical usage. In recent years, deep learning has been proved to be a highly effective, efficient and…

Machine Learning · Computer Science 2015-10-19 Zhangyang Wang , Shiyu Chang , Jiayu Zhou , Meng Wang , Thomas S. Huang
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