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Crowd counting on static images is a challenging problem due to scale variations. Recently deep neural networks have been shown to be effective in this task. However, existing neural-networks-based methods often use the multi-column or…

Computer Vision and Pattern Recognition · Computer Science 2017-02-09 Lingke Zeng , Xiangmin Xu , Bolun Cai , Suo Qiu , Tong Zhang

While previous distribution shift detection approaches can identify if a shift has occurred, these approaches cannot localize which specific features have caused a distribution shift -- a critical step in diagnosing or fixing any underlying…

Machine Learning · Computer Science 2021-07-16 Sean Kulinski , Saurabh Bagchi , David I. Inouye

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

Understanding human mobility is essential for many fields, including transportation planning. Currently, surveys are the primary source for such analysis. However, in the recent past, many researchers have focused on Call Detail Records…

Machine Learning · Computer Science 2021-08-23 Buddhi Ayesha , Bhagya Jeewanthi , Charith Chitraranjan , Amal Shehan Perera , Amal S. Kumarage

Crowd counting is an important problem in computer vision due to its wide range of applications in image understanding. Currently, this problem is typically addressed using deep learning approaches, such as Convolutional Neural Networks…

Computer Vision and Pattern Recognition · Computer Science 2024-01-26 Zhen Wang , Yuelei Li , Jia Wan , Nuno Vasconcelos

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

Comprehensive semantic segmentation is one of the key components for robust scene understanding and a requirement to enable autonomous driving. Driven by large scale datasets, convolutional neural networks show impressive results on this…

Computer Vision and Pattern Recognition · Computer Science 2019-08-30 Jan-Nico Zaech , Dengxin Dai , Martin Hahner , Luc Van Gool

Crowd counting models in highly congested areas confront two main challenges: weak localization ability and difficulty in differentiating between foreground and background, leading to inaccurate estimations. The reason is that objects in…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 Yuehai Chen , Qingzhong Wang , Jing Yang , Badong Chen , Haoyi Xiong , Shaoyi Du

Images seen during test time are often not from the same distribution as images used for learning. This problem, known as domain shift, occurs when training classifiers from object-centric internet image databases and trying to apply them…

Computer Vision and Pattern Recognition · Computer Science 2013-08-21 Erik Rodner , Judy Hoffman , Jeff Donahue , Trevor Darrell , Kate Saenko

Deep learning models have exhibited exceptional effectiveness in Computational Pathology (CPath) by tackling intricate tasks across an array of histology image analysis applications. Nevertheless, the presence of out-of-distribution data…

Image and Video Processing · Electrical Eng. & Systems 2023-10-31 Mostafa Jahanifar , Manahil Raza , Kesi Xu , Trinh Vuong , Rob Jewsbury , Adam Shephard , Neda Zamanitajeddin , Jin Tae Kwak , Shan E Ahmed Raza , Fayyaz Minhas , Nasir Rajpoot

Computer-aided detection systems based on deep learning have shown great potential in breast cancer detection. However, the lack of domain generalization of artificial neural networks is an important obstacle to their deployment in changing…

Image and Video Processing · Electrical Eng. & Systems 2023-01-25 Lidia Garrucho , Kaisar Kushibar , Socayna Jouide , Oliver Diaz , Laura Igual , Karim Lekadir

Crowd counting has been widely studied by computer vision community in recent years. Due to the large scale variation, it remains to be a challenging task. Previous methods adopt either multi-column CNN or single-column CNN with multiple…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Feng Dai , Hao Liu , Yike Ma , Juan Cao , Qiang Zhao , Yongdong Zhang

Accurate people localisation using drones is crucial for effective crowd management, not only during massive events and public gatherings but also for monitoring daily urban crowd flow. Traditional methods for tiny object localisation using…

Computer Vision and Pattern Recognition · Computer Science 2025-02-07 Bartosz Ptak , Marek Kraft

Domain Generalized Semantic Segmentation (DGSS) seeks to utilize source domain data exclusively to enhance the generalization of semantic segmentation across unknown target domains. Prevailing studies predominantly concentrate on feature…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Hongwei Niu , Linhuang Xie , Jianghang Lin , Shengchuan Zhang

Recently, with the rapid development of mobile devices and the crowdsourcing platforms, the spatial crowdsourcing has attracted much attention from the database community. Specifically, spatial crowdsourcing refers to sending a…

Databases · Computer Science 2018-09-07 Peng Cheng , Xun Jian , Lei Chen

Scaling has been proposed as a powerful tool to analyze the properties of complex systems, and in particular for cities where it describes how various properties change with population. The empirical study of scaling on a wide range of…

Physics and Society · Physics 2018-04-18 Jules Depersin , Marc Barthelemy

In domain generalization (DG), the target domain is unknown when the model is being trained, and the trained model should successfully work on an arbitrary (and possibly unseen) target domain during inference. This is a difficult problem,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-14 Jungwuk Park , Dong-Jun Han , Soyeong Kim , Jaekyun Moon

Navigating safely through dense crowds requires collision avoidance that generalizes beyond the densities seen during training. Learning-based crowd navigation can break under out-of-distribution crowd sizes due to density-sensitive…

Machine Learning · Computer Science 2026-03-10 Jiefu Zhang , Yang Xu , Vaneet Aggarwal

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

Crowd counting in single-view images has achieved outstanding performance on existing counting datasets. However, single-view counting is not applicable to large and wide scenes (e.g., public parks, long subway platforms, or event spaces)…

Computer Vision and Pattern Recognition · Computer Science 2022-05-03 Qi Zhang , Antoni B. Chan