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Intelligent machines require basic information such as moving-object detection from videos in order to deduce higher-level semantic information. In this paper, we propose a methodology that uses a texture measure to detect moving objects in…

Computer Vision and Pattern Recognition · Computer Science 2014-02-04 Pranam Janney , Glenn Geers

Thanks to the diffusion of the Internet of Things, nowadays it is possible to sense human mobility almost in real time using unconventional methods (e.g., number of bikes in a bike station). Due to the diffusion of such technologies, the…

Computer Vision and Pattern Recognition · Computer Science 2022-03-16 Marco Cardia , Massimiliano Luca , Luca Pappalardo

Predictive hotspot mapping plays a critical role in hotspot policing. Existing methods such as the popular kernel density estimation (KDE) do not consider the temporal dimension of crime. Building upon recent works in related fields, this…

Applications · Statistics 2020-06-02 Yujie Hu , Fahui Wang , Cecile Guin , Haojie Zhu

With the recent development of localization and tracking systems for both indoor and outdoor settings, we consider the problem of sensing, representing and analyzing human movement trajectories that we expect to gather in the near future.…

Networking and Internet Architecture · Computer Science 2017-08-31 Xiaotian Yin , Yu-Yao Lin , Chien-Chun Ni , Jiaxin Ding , Wei Han , Dengpan Zhou , Jie Gao , Xianfeng Gu

Transportation companies and organizations routinely collect huge volumes of passenger transportation data. By aggregating these data (e.g., counting the number of passengers going from a place to another in every 30 minute interval), it…

Databases · Computer Science 2023-10-16 Chrysanthi Kosyfaki , Nikos Mamoulis , Reynold Cheng , Ben Kao

Network constrained points are referred to as points restricted to road networks, such as taxi pick up and drop off locations. A significant pattern of network constrained points is referred to as an aggregation; e.g., the aggregation of…

Other Statistics · Statistics 2022-04-01 Zidong Fang , Ci Song , Hua Shu , Jie Chen , Tianyu Liu , Xi Wang , Xiao Chen , Tao Pei

This study presents a novel integrated framework for dynamic origin-destination demand estimation (DODE) in multi-class mesoscopic network models, incorporating high-resolution satellite imagery together with conventional traffic data from…

Computer Vision and Pattern Recognition · Computer Science 2026-02-11 Jiachao Liu , Pablo Guarda , Koichiro Niinuma , Sean Qian

Understanding human mobility is of vital importance for urban planning, epidemiology, and many other fields that aim to draw policies from the activities of humans in space. Despite recent availability of large scale data sets related to…

Physics and Society · Physics 2015-08-18 Oleguer Sagarra , Michael Szell , Paolo Santi , Albert Diaz-Guilera , Carlo Ratti

The problem of modeling and predicting spatiotemporal traffic phenomena over an urban road network is important to many traffic applications such as detecting and forecasting congestion hotspots. This paper presents a decentralized data…

Machine Learning · Computer Science 2012-06-29 Jie Chen , Kian Hsiang Low , Colin Keng-Yan Tan , Ali Oran , Patrick Jaillet , John M. Dolan , Gaurav S. Sukhatme

In recent years, there has been an increasing awareness to traffic localization techniques driven by the problematic of hotspot offloading solutions, the emergence of heterogeneous networks (HetNet) with small cells' deployment and the…

Networking and Internet Architecture · Computer Science 2015-03-31 Aymen Jaziri , Ridha Nasri , Tijani Chahed

Long-term complex activity recognition and localisation can be crucial for decision making in autonomous systems such as smart cars and surgical robots. Here we address the problem via a novel deformable, spatiotemporal scene graph…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Salman Khan , Fabio Cuzzolin

Usage of mobile wireless Internet has grown very fast in recent years. This radical change in availability of Internet has led to communication of big amount of data over mobile networks and consequently new challenges and opportunities for…

Networking and Internet Architecture · Computer Science 2016-12-20 Saeed Moghaddam , Ahmed Helmy

Object detection problem solving has developed greatly within the past few years. There is a need for lighter models in instances where hardware limitations exist, as well as a demand for models to be tailored to mobile devices. In this…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Mohammad Hajizadeh , Mohammad Sabokrou , Adel Rahmani

Many aspects of life are associated with places of human mobility patterns and nowadays we are facing an increase in the pervasiveness of mobile devices these individuals carry. Positioning technologies that serve these devices such as the…

Machine Learning · Computer Science 2019-09-26 Thiago Andrade , Brais Cancela , João Gama

Mobile robotics datasets are essential for research on robotics, for example for research on Simultaneous Localization and Mapping (SLAM). Therefore the ShanghaiTech Mapping Robot was constructed, that features a multitude high-performance…

Robotics · Computer Science 2024-08-02 Yuxin Lin , Jiaxuan Ma , Sizhe Gu , Jipeng Kong , Bowen Xu , Xiting Zhao , Dengji Zhao , Wenhan Cao , Sören Schwertfeger

With the rapid development of Internet of Things technologies, the next generation traffic monitoring infrastructures are connected via the web, to aid traffic data collection and intelligent traffic management. One of the most important…

Artificial Intelligence · Computer Science 2023-04-25 Yue Hu , Yuhang Zhang , Yanbing Wang , Daniel Work

The problem of modeling and predicting spatiotemporal traffic phenomena over an urban road network is important to many traffic applications such as detecting and forecasting congestion hotspots. This paper presents a decentralized data…

Artificial Intelligence · Computer Science 2014-08-12 Jie Chen , Kian Hsiang Low , Colin Keng-Yan Tan , Ali Oran , Patrick Jaillet , John Dolan , Gaurav Sukhatme

The rapid growth of population in urban areas is jeopardizing the mobility and air quality worldwide. One of the most notable problems arising is that of traffic congestion which in turn affects air pollution. With the advent of…

Physics and Society · Physics 2018-04-27 Albert Solé-Ribalta , Sergio Gómez , Alex Arenas

Traffic flow forecasting is considered a critical task in the field of intelligent transportation systems. In this paper, to address the issue of low accuracy in long-term forecasting of spatial-temporal big data on traffic flow, we propose…

Machine Learning · Computer Science 2024-07-17 Baichao Long , Wang Zhu , Jianli Xiao

With the proliferation of mobile devices and location-based services, continuous generation of massive volume of streaming spatial objects (i.e., geo-tagged data) opens up new opportunities to address real-world problems by analyzing them.…

Databases · Computer Science 2017-09-29 Kaiyu Feng , Tao Guo , Gao Cong , Sourav S. Bhowmicks , Shuai Ma