Judith Redi
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View article: Robustness and Prediction Accuracy of Machine Learning for Objective Visual Quality Assessment
Robustness and Prediction Accuracy of Machine Learning for Objective Visual Quality Assessment Open
Machine Learning (ML) is a powerful tool to support the development of objective visual quality assessment metrics, serving as a substitute model for the perceptual mechanisms acting in visual quality appreciation. Nevertheless, the reliab…
View article: How Do Crowdworker Communities and Microtask Markets Influence Each Other? A Data-Driven Study on Amazon Mechanical Turk
How Do Crowdworker Communities and Microtask Markets Influence Each Other? A Data-Driven Study on Amazon Mechanical Turk Open
Crowdworker online communities — operating in fora like mTurkForum and TurkerNation — are an important actor in microwork markets. Albeit central to market dynamics, how the behavior of crowdworker communities and the dynamics of online ma…
View article: Towards Individual QoE for Multiparty Videoconferencing
Towards Individual QoE for Multiparty Videoconferencing Open
Video-conferencing is becoming an essential part in everyday life. The visual channel allows for interactions which were not possible over audio-only communication systems such as the telephone. However, being a de-facto over-the-top servi…
View article: Blind Image Quality Assessment via Vector Regression and Object Oriented Pooling
Blind Image Quality Assessment via Vector Regression and Object Oriented Pooling Open
This paper presents an effective method based on vector regression and object oriented pooling for blind image quality assessment. Unlike previous models that map the extracted features directly to a quality score, the proposed vector regr…
View article: Nudge your Workforce
Nudge your Workforce Open
As crowdsourcing gains popularity, organisations seek ways to sys-
\ntematically and reliably involve their workforce with data process-
\ning pipelines. Mobile crowdsourcing allows for opportunistic task
\nexecutions and thus, potentially…
View article: The Club of The Future
The Club of The Future Open
This article showcases our effort to explore the music club of the future. We present the development and results of an end-to-end system which enhances the club-going experience through the use of wearable technology. Each party guest wea…
View article: Modeling Task Complexity in Crowdsourcing
Modeling Task Complexity in Crowdsourcing Open
Complexity is crucial to characterize tasks performed by humans through computer systems. Yet, the theory and practice of crowdsourcing currently lacks a clear understanding of task complexity, hindering the design of effective and efficie…
View article: Inducing Sadness and Anxiousness through Visual Media: Measurement Techniques and Persistence
Inducing Sadness and Anxiousness through Visual Media: Measurement Techniques and Persistence Open
The persistence of negative moods (sadness and anxiousness) induced by three visual Mood Induction Procedures (MIP) was investigated. The evolution of the mood after the MIP was monitored for a period of 8 min with the Self-Assessment Mani…
View article: 1Mbps is enough: Video quality and individual idiosyncrasies in multiparty HD video-conferencing
1Mbps is enough: Video quality and individual idiosyncrasies in multiparty HD video-conferencing Open
Most video platforms deliver HD video in high bitrate encoding. Modern video-conferencing systems are capable of handling HD streams, but using multiparty conferencing, average internet connections in the home are on their bandwidth limit.…