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Crowd counting problem that counts the number of people in an image has been extensively studied in recent years. In this paper, we introduce a new variant of crowd counting problem, namely "Categorized Crowd Counting", that counts the…

Computer Vision and Pattern Recognition · Computer Science 2019-12-13 Sarkar Snigdha Sarathi Das , Syed Md. Mukit Rashid , Mohammed Eunus Ali

Mobile crowd sensing (MCS) is a new paradigm which leverages the ubiquity of sensor-equipped mobile devices such as smartphones, music players, and in-vehicle sensors at the edge of the Internet, to collect data. The new paradigm will fuel…

Networking and Internet Architecture · Computer Science 2014-10-01 Jiajun Sun

Research in Mobile Location-Based Crowdsourcing is hindered by a marked lack of real-world data. The development of a standardized, lightweight, easily deployable, modular, composable, and most of all, scalable experimentation framework…

Human-Computer Interaction · Computer Science 2019-09-10 Irwyn Sadien , Konstantinos Papangelis , Charles Fleming , Hai-Ning Liang

Visual localization is the problem of estimating the position and orientation from which a given image (or a sequence of images) is taken in a known scene. It is an important part of a wide range of computer vision and robotics…

Computer Vision and Pattern Recognition · Computer Science 2021-09-13 Ara Jafarzadeh , Manuel Lopez Antequera , Pau Gargallo , Yubin Kuang , Carl Toft , Fredrik Kahl , Torsten Sattler

Collaborative Mobile Crowdsourcing (CMCS) allows platforms to recruit worker teams to collaboratively execute complex sensing tasks. The efficiency of such collaborations could be influenced by trust relationships among workers. To obtain…

Social and Information Networks · Computer Science 2024-03-25 Zhongwei Zhan , Yingjie Wang , Peiyong Duan , Akshita Maradapu Vera Venkata Sai , Zhaowei Liu , Chaocan Xiang , Xiangrong Tong , Weilong Wang , Zhipeng Cai

Crowdsourced mobile edge caching and sharing (Crowd-MECS) is emerging as a promising content delivery paradigm by employing a large crowd of existing edge devices (EDs) to cache and share popular contents. The successful technology adoption…

Computer Science and Game Theory · Computer Science 2020-03-11 Changkun Jiang , Lin Gao , Tong Wang , Yufei Jiang , Jianqiang Li

Crowdsourcing enables application developers to benefit from large and diverse datasets at a low cost. Specifically, mobile crowdsourcing (MCS) leverages users' devices as sensors to perform geo-located data collection. The collection of…

Cryptography and Security · Computer Science 2019-06-06 Spyros Boukoros , Mathias Humbert , Stefan Katzenbeisser , Carmela Troncoso

Vision sensors are becoming more important in Intelligent Transportation Systems (ITS) for traffic monitoring, management, and optimization as the number of network cameras continues to rise. However, manual object tracking and matching…

Computer Vision and Pattern Recognition · Computer Science 2025-05-02 Muhammad Imran Zaman , Usama Ijaz Bajwa , Gulshan Saleem , Rana Hammad Raza

Deep learning-based joint source-channel coding (JSCC) is emerging as a promising technology for effective image transmission. However, most existing approaches focus on transmitting clear images, overlooking real-world challenges such as…

Image and Video Processing · Electrical Eng. & Systems 2025-01-17 Pujing Yang , Guangyi Zhang , Yunlong Cai , Lei Yu , Guanding Yu

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

As the commercial use of 5G technologies has grown more prevalent, smart vehicles have become an efficient platform for delivering a wide array of services directly to customers. The vehicular crowdsourcing service (VCS), for example, can…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-12-22 L. J. Sun , Q. Yang , X. Chen , Z. X. Chen

This study enhances a crowd density estimation algorithm originally designed for image-based analysis by adapting it for video-based scenarios. The proposed method integrates a denoising probabilistic model that utilizes diffusion processes…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Balachandra Devarangadi Sunil , Rakshith Venkatesh , Shantanu Todmal

Crowdsourcing is a process of accumulating the ideas, thoughts or information from many independent participants, with aim to find the best solution for a given challenge. Modern information technologies allow for massive number of subjects…

Physics and Society · Physics 2016-04-04 Andrea Guazzini , Daniele Vilone , Camillo Donati , Annalisa Nardi , Zoran Levnajic

Rapid advances in image processing capabilities have been seen across many domains, fostered by the application of machine learning algorithms to "big-data". However, within the realm of medical image analysis, advances have been curtailed,…

Computer Vision and Pattern Recognition · Computer Science 2019-09-05 Silas Ørting , Andrew Doyle , Arno van Hilten , Matthias Hirth , Oana Inel , Christopher R. Madan , Panagiotis Mavridis , Helen Spiers , Veronika Cheplygina

With the development of mobile social networks, more and more crowdsourced data are generated on the Web or collected from real-world sensing. The fragment, heterogeneous, and noisy nature of online/offline crowdsourced data, however, makes…

Human-Computer Interaction · Computer Science 2019-08-08 Bin Guo , Huihui Chen , Yan Liu , Chao Chen , Qi Han , Zhiwen Yu

Social media is often viewed as a sensor into various societal events such as disease outbreaks, protests, and elections. We describe the use of social media as a crowdsourced sensor to gain insight into ongoing cyber-attacks. Our approach…

Cryptography and Security · Computer Science 2017-11-08 Rupinder Paul Khandpur , Taoran Ji , Steve Jan , Gang Wang , Chang-Tien Lu , Naren Ramakrishnan

Mobile Crowd-Sensing (MCS) has appeared as a prospective solution for large-scale data collection, leveraging built-in sensors and social applications in mobile devices that enables a variety of Internet of Things (IoT) services. However,…

Networking and Internet Architecture · Computer Science 2019-04-05 Nguyen Binh Truong , Gyu Myoung Lee , Tai-Won Um , Michael Mackay

We present a simple method, CropMix, for the purpose of producing a rich input distribution from the original dataset distribution. Unlike single random cropping, which may inadvertently capture only limited information, or irrelevant…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Junlin Han , Lars Petersson , Hongdong Li , Ian Reid

Crowd counting problem aims to count the number of objects within an image or a frame in the videos and is usually solved by estimating the density map generated from the object location annotations. The values in the density map, by…

Computer Vision and Pattern Recognition · Computer Science 2019-06-21 Shengqin Jiang , Xiaobo Lu , Yinjie Lei , Lingqiao Liu

In this paper, we consider the problem of crowd counting in images. Given an image of a crowded scene, our goal is to estimate the density map of this image, where each pixel value in the density map corresponds to the crowd density at the…

Computer Vision and Pattern Recognition · Computer Science 2019-03-07 Mohammad Asiful Hossain , Mehrdad Hosseinzadeh , Omit Chanda , Yang Wang