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In this paper, we propose a novel perspective-guided convolution (PGC) for convolutional neural network (CNN) based crowd counting (i.e. PGCNet), which aims to overcome the dramatic intra-scene scale variations of people due to the…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Zhaoyi Yan , Yuchen Yuan , Wangmeng Zuo , Xiao Tan , Yezhen Wang , Shilei Wen , Errui Ding

Depth prediction plays a key role in understanding a 3D scene. Several techniques have been developed throughout the years, among which Convolutional Neural Network has recently achieved state-of-the-art performance on estimating depth from…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Binghan Li , Yindong Hua , Yifeng Liu , Mi Lu

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

We propose the use of dilated filters to construct an aggregation module in a multicolumn convolutional neural network for perspective-free counting. Counting is a common problem in computer vision (e.g. traffic on the street or pedestrians…

Computer Vision and Pattern Recognition · Computer Science 2018-04-24 Diptodip Deb , Jonathan Ventura

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

Current crowd counting algorithms are only concerned about the number of people in an image, which lacks low-level fine-grained information of the crowd. For many practical applications, the total number of people in an image is not as…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Jia Wan , Nikil Senthil Kumar , Antoni B. Chan

In recent years, crowd counting has become an important issue in computer vision. In most methods, the density maps are generated by convolving with a Gaussian kernel from the ground-truth dot maps which are marked around the center of…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Xin Zhong , Zhaoyi Yan , Jing Qin , Wangmeng Zuo , Weigang Lu

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

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

While the performance of crowd counting via deep learning has been improved dramatically in the recent years, it remains an ingrained problem due to cluttered backgrounds and varying scales of people within an image. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Yunqi Miao , Zijia Lin , Guiguang Ding , Jungong Han

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

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

Safe and efficient crowd navigation for mobile robot is a crucial yet challenging task. Previous work has shown the power of deep reinforcement learning frameworks to train efficient policies. However, their performance deteriorates when…

Robotics · Computer Science 2019-09-24 Yuying Chen , Congcong Liu , Ming Liu , Bertram E. Shi

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

Recently, the research of wireless sensing has achieved more intelligent results, and the intelligent sensing of human location and activity can be realized by means of WiFi devices. However, most of the current human environment perception…

Machine Learning · Computer Science 2019-03-14 Shangqing Liu , Yanchao Zhao , Fanggang Xue , Bing Chen , Xiang Chen

Crowd counting is a challenging task due to the large variations in crowd distributions. Previous methods tend to tackle the whole image with a single fixed structure, which is unable to handle diverse complicated scenes with different…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Zhikang Zou , Yu Cheng , Xiaoye Qu , Shouling Ji , Xiaoxiao Guo , Pan Zhou

State-of-the-art models for semantic segmentation are based on adaptations of convolutional networks that had originally been designed for image classification. However, dense prediction and image classification are structurally different.…

Computer Vision and Pattern Recognition · Computer Science 2016-05-03 Fisher Yu , Vladlen Koltun

Automatic crowd counting using density estimation has gained significant attention in computer vision research. As a result, a large number of crowd counting and density estimation models using convolution neural networks (CNN) have been…

Computer Vision and Pattern Recognition · Computer Science 2023-02-13 Muhammad Asif Khan , Hamid Menouar , Ridha Hamila

Recently, density map regression-based methods have dominated in crowd counting owing to their excellent fitting ability on density distribution. However, further improvement tends to saturate mainly because of the confusing background…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Chenliang Gu , Changan Wang , Bin-Bin Gao , Jun Liu , Tianliang Zhang

The training of deep and/or convolutional neural networks (DNNs/CNNs) is traditionally done on servers with powerful CPUs and GPUs. Recent efforts have emerged to localize machine learning tasks fully on the edge. This brings advantages in…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-09-17 Pranav Rama , Madison Threadgill , Andreas Gerstlauer