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The TUM high definition video datasets

Christian Keimel, Arne Redl, Klaus Diepold
2012 2012 Fourth International Workshop on Quality of Multimedia Experience  
Recent contributions have also shown that crowd-based video quality assessment can deliver results comparable to traditional testing in some cases.  ...  Video quality evaluation with subjective testing is both time consuming and expensive.  ...  CROWD-BASED VIDEO QUALITY ASSESSMENT In crowd-based video quality assessment we utilize these crowdsourcing platforms to perform subjective testing with a global worker pool, usually with a web-based application  ... 
doi:10.1109/qomex.2012.6263865 dblp:conf/qomex/KeimelRD12 fatcat:zfgszmggqbd43pji4oc3rrj3py

Survey of web-based crowdsourcing frameworks for subjective quality assessment

Tobias Hobfeld, Matthias Hirth, Pavel Korshunov, Philippe Hanhart, Bruno Gardlo, Christian Keimel, Christian Timmerer
2014 2014 IEEE 16th International Workshop on Multimedia Signal Processing (MMSP)  
In this paper, we focus on the web-based frameworks for multimedia quality assessments that support commonly used crowdsourcing platforms such as Amazon Mechanical Turk and Microworkers.  ...  Since online assessment of multimedia content is challenging, several dedicated frameworks were created to aid in the designing of the tests, including the support of the testing methodologies like ACR  ...  by image content [3] , quality assessment of 3D video [4] , privacy issues in HDR images [5] , or audio quality [6] .  ... 
doi:10.1109/mmsp.2014.6958831 dblp:conf/mmsp/HossfeldHKHGKT14 fatcat:mwa6uh5k3baafnh3qnzkygq65m

Crowd-based quality assessment of multiview video plus depth coding

Philippe Hanhart, Pavel Korshunov, Touradj Ebrahimi
2014 2014 IEEE International Conference on Image Processing (ICIP)  
In this paper, we investigate two possible approaches to crowd-based quality assessment of multiview video plus depth (MVD) content on 2D displays: by using a virtual view and by using a free-viewpoint  ...  Crowdsourcing is becoming a popular cost effective alternative to lab-based evaluations for subjective quality assessment.  ...  To evaluate the suitability of crowd-based quality assessment of MVD coding, the results of the crowd-based evaluations were compared to the ground truth results of the lab-based evaluations.  ... 
doi:10.1109/icip.2014.7025149 dblp:conf/icip/HanhartKE14 fatcat:nkqd7sncdffcfnb3p65ybiepnu

Crowd Sourced Assessment of Technical Skills (CSATS): A Scalable Assessment Tool for the Nursing Workforce

Kirsch S
2016 Archives of Nursing Practice and Care  
Some innovations have attempted to address the challenges of competency assessment, such as using video-based self-assessments to give participants and their evaluators accurate views of their performance  ...  Results: In under 4 hours, we obtained 1,300 crowd ratings, approximately 38 per video that evaluated the user's performance based on completion and correct order of steps.  ...  The crowd accurately assessed that the expert ( Figure 6 , Video ID 1) completed the steps and completed them in order.  ... 
doi:10.17352/anpc.000012 fatcat:g24gunbsvbey3by4qm5iblzc4u

Crowd Sourced Assessment of Technical Skills (CSATS): A Scalable Assessment Tool for the Nursing Workforce

S Kirsch, B Comstock, L Harder, A Henriques, TS Lendvay
2016 Archives of Nursing Practice and Care  
Some innovations have attempted to address the challenges of competency assessment, such as using video-based self-assessments to give participants and their evaluators accurate views of their performance  ...  Results: In under 4 hours, we obtained 1,300 crowd ratings, approximately 38 per video that evaluated the user's performance based on completion and correct order of steps.  ...  The crowd accurately assessed that the expert ( Figure 6 , Video ID 1) completed the steps and completed them in order.  ... 
doi:10.17352/2581-4265.000012 fatcat:3vhr5tpuzrdohmdjncmoiawdbq

Design of Collaborative Framework of Network Technologies to Enhance Surveillance Security and Intrusion Detection

Sivachandiran S.
2020 International Journal of Advanced Trends in Computer Science and Engineering  
This problem enables intruders to easily by-pass the surveillance system and create problems in huge crowded arenas.  ...  machine learning filters and finally match the objects in video with the trained set of objects using deep learning algorithms.  ...  INTRODUCTION Crowd Surveillance with Anomaly detection and image mapping is one of the challenging aspects as abnormality tend to occur especially in heavy crowd where video in real-time is hard to be  ... 
doi:10.30534/ijatcse/2020/106942020 fatcat:vwtwprmufrazhcum73rsevgtbe

Assessing internet video quality using crowdsourcing

Óscar Figuerola Salas, Velibor Adzic, Akash Shah, Hari Kalva
2013 Proceedings of the 2nd ACM international workshop on Crowdsourcing for multimedia - CrowdMM '13  
In this paper, we present a subjective video quality evaluation system that has been integrated with different crowdsourcing platforms.  ...  High quality compressed videos with known Mean Opinion Score (MOS) are used as references instead of the original lossless videos in order to overcome intrinsic bandwidth limitations.  ...  Another video quality evaluation tool is Tally [6] , a web based tool that can be used for continuous video quality evaluation. In this tool, videos are uploaded to the main server.  ... 
doi:10.1145/2506364.2506366 dblp:conf/mm/SalasASK13 fatcat:y7mnnc2isjbane2c74dow4gsna

Measuring to Improve: Peer and Crowd-sourced Assessments of Technical Skill with Robot-assisted Radical Prostatectomy

Khurshid R. Ghani, David C. Miller, Susan Linsell, Andrew Brachulis, Brian Lane, Richard Sarle, Deepansh Dalela, Mani Menon, Bryan Comstock, Thomas S. Lendvay, James Montie, James O. Peabody
2016 European Urology  
This was based on the template validated by Birkmeyer et al [1] , who chose video segments of the most clinically significant and technically challenging portions of the case.  ...  In addition, unlike Birkmeyer and colleagues who distributed videos electronically to peer surgeons [1] , we used a secure Web-based system that demonstrated feasibility for both peer and crowd-sourced  ... 
doi:10.1016/j.eururo.2015.11.028 pmid:26755338 fatcat:telhwrg4ejhavmcycpittnlvym

Connecting Collaborative & Crowd Work with Online Education

Joseph Jay Williams, Markus Krause, Praveen Paritosh, Jacob Whitehill, Justin Reich, Juho Kim, Piotr Mitros, Neil Heffernan, Brian C. Keegan
2015 Proceedings of the 18th ACM Conference Companion on Computer Supported Cooperative Work & Social Computing - CSCW'15 Companion  
How can online learning improve the skill set and labor force for crowd work?  ...  Human behavior increasingly involves digital online software, where the activities and resources that support (1) learning, (2) work, and (3) collaboration overlap and are placed in far greater proximity  ...  Producing high quality content for a greater diversity of learners (across knowledge level, educational goals, country, culture, or occupation) in a range of subjects is an arduous challenge for individuals  ... 
doi:10.1145/2685553.2685563 dblp:conf/cscw/WilliamsKPWRKMH15 fatcat:7wdzpkrpabhsvexig4r5vk5oau

Subjective Quality Assessment for YouTube UGC Dataset [article]

Joong Gon Yim, Yilin Wang, Neil Birkbeck, Balu Adsumilli
2020 arXiv   pre-print
The initial dataset only provided videos, limiting its use in quality assessment. We used a crowd-sourcing platform to collect subjective quality scores for this dataset.  ...  We analyzed the distribution of Mean Opinion Score (MOS) in various dimensions, and investigated some fundamental questions in video quality assessment, like the correlation between full video MOS and  ...  CHUNK MOS ANALYSIS A fundamental question in video quality assessment is how to estimate the overall video quality score from chunk (or frame) quality scores.  ... 
arXiv:2002.12275v1 fatcat:pyia6mi5rfhbjn6oeeuxcmupoq

Creating Crowdsourced Research Talks at Scale

Rajan Vaish, Shirish Goyal, Amin Saberi, Sharad Goel
2018 Proceedings of the 2018 World Wide Web Conference on World Wide Web - WWW '18  
This distributed crowd produced over 100 video talks in 12 languages based on papers from top-tier computer science conferences.  ...  Most academic research, however, is still distributed only in text form, as researchers often have limited time, resources, and incentives to create video versions of their work.  ...  As clear subjectmatter experts, their feedback provided valuable insight and assessment of the quality of the crowd-generated talks.  ... 
doi:10.1145/3178876.3186031 dblp:conf/www/VaishGSG18 fatcat:fo2gog26ujfbfimp3kqve3kdca

Crowdsourcing Quality of Experience Experiments [chapter]

Sebastian Egger-Lampl, Judith Redi, Tobias Hoßfeld, Matthias Hirth, Sebastian Möller, Babak Naderi, Christian Keimel, Dietmar Saupe
2017 Lecture Notes in Computer Science  
The authors want to thank Schloss Dagstuhl Leibniz-Zentrum für Informatik, the participants of Dagstuhl Seminar 15481 Evaluation in the Crowd: Crowdsourcing and Human-Centred Experiments as well as the  ...  Qualinet members that participated in the creation of Best Practices and Recommendations for Crowdsourced QoE -Lessons learned from the Qualinet Task Force [38] .  ...  In contrast to images, video is more challenging from a resource perspective (e.g. bandwidth requirements or download volume for long video sequences) in crowdsourced quality assessments.  ... 
doi:10.1007/978-3-319-66435-4_7 fatcat:mkhhxbmtpzhqzcawfep7m7v5oi

How to Assess and Rank User-Generated Content on Web

Elaheh Momeni, Claire Cardie, Nicholas Diakopoulos
2018 Companion of the The Web Conference 2018 on The Web Conference 2018 - WWW '18  
However, UGC varies in quality and, consequently, raises the challenge of how to maximize its utility for a variety of end-users, in particular in the age of misinformation.  ...  This survey is composed of a systematic review of approaches for assessing and ranking UGC: results obtained by identifying and comparing methodologies within the context of short text-based UGC on the  ...  application domains is challenging in practice.  ... 
doi:10.1145/3184558.3186239 dblp:conf/www/MomeniCD18 fatcat:vx536kscpregdl5xulqkrnkp2e

Lessons Learned from Crowd Accessibility Services [chapter]

Hironobu Takagi, Susumu Harada, Daisuke Sato, Chieko Asakawa
2013 Lecture Notes in Computer Science  
However, many of them encounter similar challenges, such as variations in quality and sustaining contributor participation for durable services.  ...  Crowd accessibility services for people with disabilities, driven by crowd-sourcing methods, are gaining traction as a viable means of realizing innovative services by leveraging both human and machine  ...  Challenges of User-Side Service-Quality Assurance One of the specific challenges for crowd accessibility services is the difficulty of quality assessment on the user side.  ... 
doi:10.1007/978-3-642-40483-2_42 fatcat:jiu2cnq4arakbe2qa4anb6slcm

Data Driven Evaluation of Crowds [chapter]

Alon Lerner, Yiorgos Chrysanthou, Ariel Shamir, Daniel Cohen-Or
2009 Lecture Notes in Computer Science  
There are various techniques for simulating crowds, however, in most cases the quality of the simulation is measured by examining its "look-and-feel".  ...  Based on video footage of a real crowd, a database of state-action examples is generated. Using a similarity measure, the queries are matched with the database of examples.  ...  In order to assess a simulated crowd's quality in full, it must be examined in detail, since a single individual whose behavior deviates from some "regular" or "normal" pattern may hinder the quality of  ... 
doi:10.1007/978-3-642-10347-6_7 fatcat:o3a5qqlgerft3gasfu3gqd4ih4
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