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Multi-view approaches to people-tracking have the potential to better handle occlusions than single-view ones in crowded scenes. They often rely on the tracking-by-detection paradigm, which involves detecting people first and then…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Martin Engilberge , Weizhe Liu , Pascal Fua

Crowd estimation is a very challenging problem. The most recent study tries to exploit auditory information to aid the visual models, however, the performance is limited due to the lack of an effective approach for feature extraction and…

Computer Vision and Pattern Recognition · Computer Science 2021-09-07 Usman Sajid , Xiangyu Chen , Hasan Sajid , Taejoon Kim , Guanghui Wang

Multi-view counting (MVC) methods have shown their superiority over single-view counterparts, particularly in situations characterized by heavy occlusion and severe perspective distortions. However, hand-crafted heuristic features and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Hong Mo , Xiong Zhang , Jianchao Tan , Cheng Yang , Qiong Gu , Bo Hang , Wenqi Ren

There is a growing interest in developing computer vision methods that can learn from limited supervision. In this paper, we consider the problem of learning to predict camera viewpoints, where obtaining ground-truth annotations are…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Octave Mariotti , Hakan Bilen

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, vision-based crowd analysis has been studied extensively due to its practical applications in real world. In this paper, we formulate a novel crowd analysis problem, in which we aim to predict the crowd distribution in the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-11 Yuzhen Niu , Weifeng Shi , Wenxi Liu , Shengfeng He , Jia Pan , Antoni B. Chan

With advances in information acquisition technologies, multi-view data become ubiquitous. Multi-view learning has thus become more and more popular in machine learning and data mining fields. Multi-view unsupervised or semi-supervised…

Machine Learning · Computer Science 2018-04-04 Guoqing Chao , Shiliang Sun , Jinbo Bi

State-of-the-art crowd counting models follow an encoder-decoder approach. Images are first processed by the encoder to extract features. Then, to account for perspective distortion, the highest-level feature map is fed to extra components…

Computer Vision and Pattern Recognition · Computer Science 2022-10-24 Yiming Ma , Victor Sanchez , Tanaya Guha

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

In this paper, a novel Unified Multi-Task Learning Framework of Real-Time Drone Supervision for Crowd Counting (MFCC) is proposed, which utilizes an image fusion network architecture to fuse images from the visible and thermal infrared…

Computer Vision and Pattern Recognition · Computer Science 2023-12-21 Siqi Gu , Zhichao Lian

Many real-world phenomena are observed at multiple resolutions. Predictive models designed to predict these phenomena typically consider different resolutions separately. This approach might be limiting in applications where predictions are…

Machine Learning · Computer Science 2020-01-07 Guruprasad Nayak , Rahul Ghosh , Xiaowei Jia , Varun Mithal , Vipin Kumar

Convolutional neural networks (CNNs) have dominated the field of computer vision for nearly a decade due to their strong ability to learn local features. However, due to their limited receptive field, CNNs fail to model the global context.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Siddharth Singh Savner , Vivek Kanhangad

Crowd analysis via computer vision techniques is an important topic in the field of video surveillance, which has wide-spread applications including crowd monitoring, public safety, space design and so on. Pixel-wise crowd understanding is…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Qi Wang , Junyu Gao , Wei Lin , Yuan Yuan

To learn a reliable people counter from crowd images, head center annotations are normally required. Annotating head centers is however a laborious and tedious process in dense crowds. In this paper, we present an active learning framework…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Zhen Zhao , Miaojing Shi , Xiaoxiao Zhao , Li Li

Multi-modal crowd counting involves estimating crowd density from both visual and thermal/depth images. This task is challenging due to the significant gap between these distinct modalities. In this paper, we propose a novel approach by…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Haoliang Meng , Xiaopeng Hong , Chenhao Wang , Miao Shang , Wangmeng Zuo

Multi-view crowd tracking estimates each person's tracking trajectories on the ground of the scene. Recent research works mainly rely on CNNs-based multi-view crowd tracking architectures, and most of them are evaluated and compared on…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Qi Zhang , Jixuan Chen , Kaiyi Zhang , Xinquan Yu , Antoni B. Chan , Hui Huang

In this paper, we propose a novel self-training approach named Crowd-SDNet that enables a typical object detector trained only with point-level annotations (i.e., objects are labeled with points) to estimate both the center points and sizes…

Computer Vision and Pattern Recognition · Computer Science 2021-02-19 Yi Wang , Junhui Hou , Xinyu Hou , Lap-Pui Chau

Crowd counting is a challenging problem due to the scene complexity and scale variation. Although deep learning has achieved great improvement in crowd counting, scene complexity affects the judgement of these methods and they usually…

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

The mainstream crowd counting methods regress density map and integrate it to obtain counting results. Since the density representation to one head accords to its adjacent distribution, it embeds the same category objects with variant…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Qi Wang , Juncheng Wang , Junyu Gao , Yuan Yuan , Xuelong Li

The existing crowd counting models require extensive training data, which is time-consuming to annotate. To tackle this issue, we propose a simple yet effective crowd counting method by utilizing the Segment-Everything-Everywhere Model…

Computer Vision and Pattern Recognition · Computer Science 2024-08-16 Jia Wan , Qiangqiang Wu , Wei Lin , Antoni B. Chan