Judith Redi

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Judith Redi

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I obtained my PhD from the University of Genoa (Italy) in 2010, with a thesis on learning machines for objective image quality assessment, final result of a project on visual quality in displays funded by Philips research. After receiving the award for the best ICT thesis from University of Genoa, I moved to Eurecom (France) for a post doc on Digital Image Forensics and 3D face recognition. Since Octber 2010, I am Assistant Professor at the Multimedia Computing group of Delft University of Technology, faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS). At TU Delft, I work on image and video understanding towards the maximization of the Quality of (multimedia) Experiences. This is a highly multidisciplinary field that connects visual perception, cognitive science and engineering, machine learning and computer vision. I am also ambassador of DEWIS (Delft Women in Science) in EEMCS, and as such I promote activities to support gender diversity and women networking within the faculty.

Education

2010: PhD in Science and Technologies for Information and Communication, University of Genoa, Italy
2006: MSc in Computer Engineering, University of Genoa, Italy

Work Experience

September 2014 - Current: Assistant Professor
Dept. Intelligent Systems: Multimedia Computing
Delft University of Technology, The Netherlands

October 2010 - September 2014: Assistant Professor
Dept. Intelligent Systems: Interactive Intelligence
Delft University of Technology, The Netherlands

March 2010 – September 2010: Post-Doctoral Researcher
Dept. Multimedia: Multimedia Image Processing
Eurecom, France

March 2009 – June 2009: Guest Researcher
Dept. Intelligent Systems: Interactive Intelligence
Delft University of Technology, The Netherlands

February 2007 – June 2007: Intern Researcher
Group Visual Experiences
Philips Research, The Netherlands

September 2006 – December 2006: Research Assistant
Dept. Biophysical and Electronic Engineering: Smart Embedded Applications
University of Genoa, Italy

Professional Activities

Projects

Semantic-Aware Quality Assessment
NWO Veni Grant for young researchers (250K Eur, personal grant)

The project investigates the role of visual semantics in the Quality of the (visual) Experience and aims at developing objective QoE assessment tools that take into account the semantic content of visual media.

VARIUM (Visual Artifacts Interference Understanding and Modeling)
CAPES/NUFFIC grant 2011 for cooperation between the Netherlands and Brazil for the project

The project aims at investigating the perceptual impact of multiple and overlapped temporal and spatial artifacts in videos
Scientists involved: Dr Judith Redi, Prof. Ingrid Heynderickx and Prof. Huib de Ridder (TU Delft), Prof. Mylene Farias, Prof. Bruno Machiavello and Prof. Ricardo Lopes de Queiroz (University of Brasilia), Prof. Max Costa (University of Campinas)

ACE (Adaptive Ambience Creation in Care Centres for Elderly)
Point-One Innovation funding scheme

The project aims at developing intelligent ambiences able to adapt the lighting of a space so that the mood of the occupants is driven towards a better affective state.
Scientists involved: Dr. Judith Redi, MSc. Andre Kuijsters, MSc. Christina Katsimerou (TU Delft), Prof. Ingrid Heynderickx (TU Delft and Philips Research), Dr. Boris de Ruiter (Philips Research)

International Activities

WG3 (Objective Quality Metrics) deputy Leader and Management Committee member for the Netherlands in COST IC1003 action "Qualinet"

Coordinator of the Qualinet Industrial Forum

Organizing Committee Member of:

Program Committee member of:

  • ACM Multimedia (ACM MM 2014)
  • European Signal Processing Conference (EUSIPCO 2014)
  • International Conference on Image Processing (ICIP 2013, 2014)
  • IST&SPIE Human Vision and Electronic Imaging (HVEI 2014, 2015)
  • IEEE workshop on Quality of the Multimedia Experience (QoMEX 2013, 2014)
  • International Conference on Image and Signal Processing (ICISP 2014)
  • International Workshop on Video Processing and Quality Metrics for Consumer Electronics (VPQM 2012, 2013, 2014, 2015)
  • International Congress on Image and Signal Processing (CISP 2012)
  • International conference on Information Assurance and Security (IAS 2011, 2012, 2013)
  • Computational Intelligence in Security for Information Systems (CISIS 2008, 2009, 2010, 2011, 2012)

Reviewer (Journals)

  • IEEE transactions on Multimedia
  • IEEE transactions on Image Processing
  • IEEE transactions on Circuits and Systems for Video Technology
  • SPIE Journal of Electronic Imaging
  • Springer’s Journal on Multimedia Tools and Applications
  • Elsevier Signal Processing: Image Communication
  • EURASIP Journal on Image and Video processing

Invited talks:

  • "Predicting Viewing Experiences", HTI Brownbag Colloquium, Eindhoven University of Technology, Eindhoven, The Netherlands, May 2014
  • “Engineering Visual Experiences”, TNO ICT Delft, Delft, The Netherlands, June 2013
  • “The aesthetic side of Visual Quality”, Latindisplay, Sao Paulo, Brazil, December 2012
  • “Machine Learning for objective QoE assessment: Science, Myths and a look to the future”, Colloquium on Multimedia, Klagenfurt, Austria, November 2012
  • “Influence factors of Quality of Experience”, Qualinet General Meeting, Zagreb, Croatia, October 2012.
  • “Engineering Visual Experiences”, DEWIS Symposium on Women in IT, Delft University of Technology, The Netherlands, March 2012.
  • “Engineering Quality of Experience”, IEEE talk at the IEEE Brasilia section, University of Brasilia, Brasilia, Brazil, December 2011.
  • “Human Factors and Applied Vision for display technology” Eurodisplay 2011, Arcachon, France, 2011

Awards

  • QoMEX2014 Best Reviewer Award, 2014
  • NWO Veni award for young researchers, 2012
  • ASING Best Engineering thesis award, University of Genoa, 2010

Teaching

I teach the following course within the Computer Science Master Program of TU Delft:

  • IN4105 Neural Networks

And the following course within the Technische Informatica Bachelor Program of TU Delft:

  • TI2736-A Computational Intelligence

In the past, I have also (co-)taught:

  • IN4180 Visual Perception of Displays and Lighting
  • IN4311 Seminar Interactive Intelligence

Publications

Journal Papers (Click on the paper title to access the PDF)

  1. Alers H, Redi J, Liu H, Heynderickx I, “Studying the effect of optimizing image quality in salient regions at the expense of background content”. J. Electron. Imaging., 0001;22(4):043012-043012, 2013
  2. Gastaldo, P, Zunino, R, Redi, J, “Supporting Visual Quality Assessment with Machine Learning”, EURASIP Journal on Image and Video Processing, accepted, in press, 2013
  3. Decherchi, S, Gastaldo P, Redi JA, Zunino R, Cambria E, “Circular-ELM for the Reduced-Reference Assessment of Perceived Image Quality” Neurocomputing, accepted, in press, 2012
  4. Redi J, Gastaldo P, Zunino R, “A two-layer neural system for reduced-reference visual quality assessment,” Journal of Artificial Intelligence and Soft Computing Research, 1(1):27-42, 2011
  5. Redi J, Taktak W, Dugelay JL, “Digital Image Forensics: a booklet for beginners”, Journal of Multimedia Tools and Applications, Special Issue on Survey Papers in Multimedia by World Experts 51(1): 133-162, 2011
  6. Liu H, Redi J, Alers H, Zunino R and Heynderickx I, "Efficient neural-network–based no-reference approach to an overall quality metric for JPEG and JPEG2000 compressed images", Journal of Electronic Imaging 20(4): 1-15, 2011
  7. Redi J, Gastaldo P, Heynderickx I, Zunino R, “Color Distribution Information for the Reduced-Reference Assessment of Perceived Image Quality”, IEEE Transactions on Circuits and Systems for Video Technology. 20(12):1745-1756, 2010
  8. Decherchi S, Tacconi S, Redi J, Leoncini A, Sangiacomo F, Zunino R, ”Text Clustering for Digital Forensics Analysis,” Journal of Information Assurance and Security, No. 5(1): 384-391, 2010
  9. Decherchi S, Gastaldo P, Redi J and Zunino R, “A Text Clustering Framework for Information Retrieval“, Journal of Information Assurance and Security, 4(2):174-182, 2009

Conference Papers:

  1. Redi, J, and Povoa, I, “Crowdsourcing for rating image aesthetic appeal: better a paid or a volunteer crowd?”, Third International ACM workshop on crowdsourcing for Multimedia (CrowdMM 2014), ACMMM workshops, 2014, Accepted
  2. Zhang, T, Nefs, H, Redi, J and Heynderickx, I, “The aesthetic appeal of depth of field in photographs”, Sixth International Workshop on Quality of Multimedia Experience (QoMEX 2014), 2014, accepted
  3. Siahaan, E, Redi, J and Hanjalic, A, “Beauty is in the scale of the beholder: a comparison of methodologies for the subjective assessment of image aesthetic appeal”, Sixth International Workshop on Quality of Multimedia Experience (QoMEX 2014), 2014, accepted
  4. Hines, H, Kendrick, P, Barri, A, Narwaria, M, and Redi, J “Robustness and Prediction Accuracy of Machine Learning for Objective Visual Quality Assessment”, European Signal Processing Conference (EUSIPCO 2014), Accepted, 2014
  5. Katsimerou C, Redi J, and Heynderickx I, “A computational model for mood recognition”, 22nd Conference on User Modeling, Adaptation and Personalization (UMAP 2014), 2014
  6. Zhu Y, Heynderickx I and Redi J, "Alone or together: measuring users' viewing experience in different social contexts", Proc. SPIE 9014, Human Vision and Electronic Imaging XIX, 90140W, 2014
  7. Redi J, Hossfeld T, Koshunov P, Mazza F, Povoa I and Keimel C, “Crowdsourcing-based Multimedia Subjective Evaluations: A Case Study on Image Recognizability and Aesthetic Appeal”, in Proc. 2nd ACM International Workshop on Crowdsourcing for Multimedia (CrowdMM2013), ACM Multimedia Workshops, 2013.
  8. Redi J, Povoa I, “The role of visual attention in the aesthetic appeal of consumer images: a preliminary study”, in proc. International Conference on Video Communication and Image Processing (VCIP 2013), 2013
  9. Redi J, Heynderickx I, Farias M, Macchiavello B, “On the impact of packet-loss impairments on visual attention mechanisms”, in Proc. IEEE International Conference on Circuits and Systems (ISCAS 2013), 2013
  10. Katsimerou C, Redi J, Heynderickx I, “face detection in intelligent ambiences with colored illumination”, in Proc. International Symposium on Ambient Intelligence, 2013
  11. Farias M, Heyinderickx I, Machiavello B and Redi J, “Visual Artifacts Understanding and Modeling (VARIUM)”, International Workshop on Video Processing and Quality Metrics (VPQM 2013), 2013
  12. Redi J, “Visual quality beyond artifact visibility”, in proc. SPIE Electronic Imaging Symposium 2013 - Human Vision and Electronic Imaging XVIII, 2013.
  13. Redi J, “The aesthetic side of Quality of Experience”, in Proc. SID Latindisplay 2012
  14. Kuijsters, A., Redi, J, de Ruiter, B. and Heynderickx, I., “Effects of ageing on atmosphere perception” Accepted for Publication in Proc. Experiencing Light, 2012
  15. Redi, J, Heynderickx I “Image Integrity and Aesthetics: towards a more encompassing definition of Visual Quality”, SPIE Electronic Imaging Symposium 2012 - Human Vision and Electronic Imaging XVII, In Press
  16. Alers, H, Redi, J, Heynderickx, I, “Examining the effect of task on viewing behavior in videos using saliency maps”, SPIE Electronic Imaging Symposium 2012 - Human Vision and Electronic Imaging XVII, In Press
  17. Gastaldo, P and Redi, J “Machine Learning solutions for Objective Visual Quality Assessment”, Sixth international workshop on Video Processing and Quality Metrics (VPQM 2012)
  18. Kuijsters, A, Redi, J, de Ruyter, B, Heynderickx , I, “Improving the mood of elderly with coloured lighting”, in proc. of the Role of Ambient Intelligence in Future Lighting Systems Workshop at the Ambience Intelligence Conference, 2011
  19. Redi, J, Heynderickx I, “Image quality and visual attention interactions: towards a more reliable analysis in the saliency space” International workshop on Quality of Multimedia Experience (QoMEX 2011), 2011
  20. Liu, H, Wang J, Redi J, Le Callet P, Heynderickx I, “An Efficient No-Reference Metric for Perceived Blur”, European Workshop on Visual Information Processing -EUVIP 2011, 2011
  21. Redi, J, Liu H, Zunino R, Heynderickx I, “Interactions of visual attention and quality perception”, IS&T/SPIE Electronic Imaging 2011 and Human Vision and Electronic Imaging XVI, 2011
  22. Redi J, Liu H, Zunino R, Heynderickx I, “Comparing subjective image quality measurement methods for the creation of public databases ”, IS&T/SPIE Electronic Imaging 2010 and Image Quality and System Performance VII, 2010
  23. Liu H, Redi J, Zunino R, Heynderickx I, “No-reference Image Quality Assessment Based on Localized Gradient Statistics: Application to JPEG and JPEG2000 ”, IS&T/SPIE Electronic Imaging 2010 and Human Vision and Electronic Imaging XV, 2010
  24. Alers H, Liu H, Redi J, Heynderickx I, “Studying the effect of optimizing the image quality in saliency regions at the expense of background content” IS&T/SPIE Electronic Imaging 2010 and Image Quality and System Performance VII, 2010
  25. Redi J, Liu H, Gastaldo P, Zunino R, Heynderickx I, “How to apply spatial saliency into objective metrics for JPEG compressed images?”, Proceedings of the IEEE International Conference on Image Processing, ICIP 2009, Cairo, 2009
  26. Redi J, Gastaldo P, Zunino R, “Hybrid neural systems for reduced-reference image quality assessment”, Proceedings of the International Conference on Artificial Neural Networks, ICANN 2009, Limassol, 2009
  27. Redi J, Gastaldo P, Zunino R, Heynderickx I, “Reduced-reference Assessment of Perceived Quality by Exploiting Color Information”, Proceedings of the Video Processing and Quality Metrics for Consumers Electronics Workshop, VPQM 2009, Scottsdale, 2009
  28. Decherchi S, Gastaldo P, Redi J, Zunino R, Decherchi S, Gastaldo P, Redi J, Zunino R, “Maximal-Discrepancy bounds for margin-maximizing classifiers”, Proceedings of the International Joint Conference on Neural Networks, IJCNN 2009, Atlanta, 2009
  29. Decherchi S, Tacconi S, Redi J, Leoncini A, Sangiacomo L, Zunino R, “Text Clustering for Digital Forensics Analysis”, Proceedings of the International Workshop on Computational Intelligence in Security for Information Systems - CISIS'09, Burgos, 2009
  30. Redi J, Gastaldo P, Zunino R, Heynderickx I, “Co-occurrence matrixes for the quality assessment of coded images”, Proceedings of the Int.Conference on Artif. Neur. Networks – ICANN’08, Prague , 2008
  31. Decherchi S, Gastaldo P, Redi J, Zunino R, ”Non-stationary Data Mining: the Network Security Issue”, Int.Conference on Artif. Neur. Networks – ICANN’08, Prague, 2008
  32. Decherchi S, Gastaldo P, Redi J and Zunino R, “Hypermetric k-Means Clustering for Content-based Document Management “, Proceedings of the International Workshop on Computational Intelligence in Security for Information Systems - CISIS'08, Genova, 2008
  33. Gastaldo P, Parodi G, Redi J, Zunino R “No-reference quality assessment of JPEG images by using CBP neural networks”, Int. Conf. Artif. Neural Networks – ICANN 2007, Oporto, Springer, Lecture Notes in Computer Science #4669, Part II, Springer, pp.564-572, 2007
  34. Redi J, Gastaldo P, Parodi G, Zunino R, “Co-occurrence matrixes for the quality assessment of coded images”, IEEE Int.Symp. Industrial Electronics – ISIE 2007, Vigo, Spain, pp. 1584-1589, 2007

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Eye-tracking databases

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