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Annotated images are required for both supervised model training and evaluation in image classification. Manually annotating images is arduous and expensive, especially for multi-labeled images. A recent trend for conducting such laboursome…

Computer Vision and Pattern Recognition · Computer Science 2022-12-07 Jianzhe Lin , Tianze Yu , Z. Jane Wang

Image segmentation is a fundamental problem in medical image analysis. In recent years, deep neural networks achieve impressive performances on many medical image segmentation tasks by supervised learning on large manually annotated data.…

Computer Vision and Pattern Recognition · Computer Science 2018-01-26 Ling Zhang , Vissagan Gopalakrishnan , Le Lu , Ronald M. Summers , Joel Moss , Jianhua Yao

Recent advancements in medical imaging and artificial intelligence (AI) have greatly enhanced diagnostic capabilities, but the development of effective deep learning (DL) models is still constrained by the lack of high-quality annotated…

Image and Video Processing · Electrical Eng. & Systems 2025-07-22 Amir Syahmi , Xiangrong Lu , Yinxuan Li , Haoxuan Yao , Hanjun Jiang , Ishita Acharya , Shiyi Wang , Yang Nan , Xiaodan Xing , Guang Yang

Recently, Computer-Aided Diagnosis (CAD) systems have emerged as indispensable tools in clinical diagnostic workflows, significantly alleviating the burden on radiologists. Nevertheless, despite their integration into clinical settings, CAD…

Image and Video Processing · Electrical Eng. & Systems 2024-06-27 Muwei Jian , Hongyu Chen , Zaiyong Zhang , Nan Yang , Haorang Zhang , Lifu Ma , Wenjing Xu , Huixiang Zhi

Selecting an effective training signal for machine learning tasks is difficult: expert annotations are expensive, and crowd-sourced annotations may not be reliable. Recent work has demonstrated that learning from a distribution over labels…

Computation and Language · Computer Science 2025-04-23 Dustin Wright , Isabelle Augenstein

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

Objectives: The main objective of this review article is to evaluate the usability of Computational Fluid Dynamics (CFD) as a supporting clinical tool for respiratory system. Data Source: The English articles referred for this review paper…

Fluid Dynamics · Physics 2023-10-24 Rajneesh Kashyap , R. Thundil Karuppa Raj

An alternative approach to ultrasound computed tomography (USCT) for medical imaging is proposed, with the intent to (i) shorten acquisition time for devices with a large number of emitters, (ii) eliminate the calibration step, and (iii)…

Medical Physics · Physics 2022-01-25 Ines Elisa Ulrich , Christian Boehm , Andrea Zunino , Cyrill Bösch , Andreas Fichtner

Precise knowledge about the size of a crowd, its density and flow can provide valuable information for safety and security applications, event planning, architectural design and to analyze consumer behavior. Creating a powerful machine…

Computer Vision and Pattern Recognition · Computer Science 2019-06-19 Mahdi Maktabdar Oghaz , Anish R Khadka , Vasileios Argyriou , Paolo Remagnino

In crowd counting, each training image contains multiple people, where each person is annotated by a dot. Existing crowd counting methods need to use a Gaussian to smooth each annotated dot or to estimate the likelihood of every pixel given…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Boyu Wang , Huidong Liu , Dimitris Samaras , Minh Hoai

The process of gathering ground truth data through human annotation is a major bottleneck in the use of information extraction methods for populating the Semantic Web. Crowdsourcing-based approaches are gaining popularity in the attempt to…

Human-Computer Interaction · Computer Science 2022-09-21 Anca Dumitrache , Oana Inel , Benjamin Timmermans , Carlos Ortiz , Robert-Jan Sips , Lora Aroyo , Chris Welty

The simulation of the dynamical behavior of pedestrians and crowds in spatial structures is a consolidated research and application context that still presents challenges for researchers in different fields and disciplines. Despite…

Multiagent Systems · Computer Science 2016-08-18 Giuseppe Vizzari , Stefania Bandini

Crowd counting is an effective tool for situational awareness in public places. Automated crowd counting using images and videos is an interesting yet challenging problem that has gained significant attention in computer vision. Over the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Muhammad Asif Khan , Hamid Menouar , Ridha Hamila

We investigate the feasibility of obtaining highly trustworthy results using crowdsourcing on complex engineering tasks. Crowdsourcing is increasingly seen as a potentially powerful way of increasing the supply of labor for solving…

Social and Information Networks · Computer Science 2014-07-01 Matthew Staffelbach , Peter Sempolinski , David Hachen , Ahsan Kareem , Tracy Kijewski-Correa , Douglas Thain , Daniel Wei , Greg Madey

Accurate annotation of medical image is the crucial step for image AI clinical application. However, annotating medical image will incur a great deal of annotation effort and expense due to its high complexity and needing experienced…

Machine Learning · Computer Science 2019-01-09 Yang Deng , Yao Sun , Yongpei Zhu , Yue Xu , Qianxi Yang , Shuo Zhang , Mingwang Zhu , Jirang Sun , Weiling Zhao , Xiaobo Zhou , Kehong Yuan

Due to its variety of applications in the real-world, the task of single image-based crowd counting has received a lot of interest in the recent years. Recently, several approaches have been proposed to address various problems encountered…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Vishwanath A. Sindagi , Rajeev Yasarla , Vishal M. Patel

Mapping the extent of flood events is a necessary and important aspect of disaster management. In recent years, deep learning methods have evolved as an effective tool to quickly label high resolution imagery and provide necessary flood…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Landon Dyken , Saugat Adhikari , Pravin Poudel , Steve Petruzza , Da Yan , Will Usher , Sidharth Kumar

In this paper, we tackle the problem of Crowd Counting, and present a crowd density estimation based approach for obtaining the crowd count. Most of the existing crowd counting approaches rely on local features for estimating the crowd…

Computer Vision and Pattern Recognition · Computer Science 2019-04-08 Viresh Ranjan , Mubarak Shah , Minh Hoai Nguyen

This paper proposes a crowd counting method. Crowd counting is difficult because of large appearance changes of a target which caused by density and scale changes. Conventional crowd counting methods generally utilize one predictor (e,g.,…

Computer Vision and Pattern Recognition · Computer Science 2017-03-29 Shohei Kumagai , Kazuhiro Hotta , Takio Kurita

Methods for automated collection and annotation are changing the cost-structures of sampling surveys for a wide range of applications. Digital samples in the form of images or audio recordings can be collected rapidly, and annotated by…

Computers and Society · Computer Science 2015-08-24 Oscar Beijbom