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TU Berlin

Inhalt des Dokuments

Maija Poikela

taken by Aleksi Rinta-Kauppila
Lupe

Research Field

- Usable privacy
- Location privacy
- Privacy-enhancing technologies

Biography

Maija Poikela received her M.Sc. degree in Signal Processing and Communications Engineering from Tampere University of Technology, Finland, in 2010, focusing on subjective quality and the human perception of stereoscopic videos. She joined the Quality and Usability Labs in 2013 and is currently working towards her PhD with the topic of usable privacy in the context of location-based services.

Teaching

Usable Privacy (Every winter semester)

Address:

Quality and Usability Lab
Deutsche Telekom Laboratories
TU Berlin
Ernst-Reuter-Platz 7
D-10587 Berlin, Germany

Telefon:
+49 30 8353 58483

Publications

Möller, Sebastian and Kraus, Lydia and Poikela, Maija and Wechsung, Ina (2017). Usable Security and Privacy: Mobile Security and Privacy Perception.


Möller, Sebastian and Kraus, Lydia and Poikela, Maija and Wechsung, Ina (2017). Usable Security and Privacy: Mobile Security and Privacy Perception.


Poikela, Maija and Toch, Eran (2017). Understanding the Valuation of Location Privacy: a Crowdsourcing-Based Approach. Proceedings of the 50th Annual Hawaii International Conference on System Sciences. University Hawaii, 1–10.

Link zur Publikation

Kaiser, Felix and Poikela, Maija and Möller, Sebastian (2016). Smartwatch - Facilitator with Privacy Risks?. NordiCHI 2016 Workshop on Mobile Wellbeing. ACM.

Link zur Publikation Link zur Originalpublikation

Poikela, Maija and Kaiser, Felix (2016). “It Is a Topic That Confuses Me” – Privacy Perceptions in Usage of Location-Based Applications. European Workshop on Usable Security (EuroUSEC). Internet Society.

Link zur Publikation

Bajic, Alexander and Kraus, Lydia and Möller, Sebastian and Poikela, Maija and Wechsung, Ina (2015). Beyond Usable: Experience-based Security & Privacy. Keynote at Usable Security and Privacy Workshop at “Mensch und Computer” Conference


Möller, Sebastian and Kraus, Lydia and Poikela, Maija and Wechsung, Ina and Bajic, Alexander (2015). User Factors Influencing Security and Privacy Perception and Related Behavior. Invited talk at the Future Security Conference


Poikela, Maija and Schmidt, Robert and Wechsung, Ina and Möller, Sebastian (2015). FlashPolling Privacy: the Discrepancy of Intention and Action in Location-Based Poll Participation. PerPart 2015: 2nd International Workshop on Pervasive Participation, 2015 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp 2015). ACM, 813–818.

Link zur Publikation

Poikela, Maija and Schmidt, Robert and Wechsung, Ina and Möller, Sebastian (2015). "About Your Smartphone Usage" - Privacy in Location-Based Mobile Participation. IEEE International Symposium on Technology and Society (ISTAS 2015). IEEE.

Link zur Publikation

Poikela, Maija and Wechsung, Ina and Möller, Sebastian (2015). Location-Based Applications-Benefits, Risks, and Concerns as Usage Predictors. 2nd Annual Privacy Personas and Segmentation (PPS) Workshop at the Eleventh Symposium on Usable Privacy and Security (SOUPS). Usenix.

Link zur Publikation

Poikela, Maija and Schmidt, Robert and Wechsung, Ina and Möller, Sebastian (2014). Locate! - When do Users Disclose Location?. Workshop on Privacy Personas and Segmentation (PPS) at the Tenth Symposium On Usable Privacy and Security (SOUPS). USENIX Association.

Link zur Publikation

Kraus, Lydia and Hirsch, Tobias and Wechsung, Ina and Poikela, Maija and Möller, Sebastian (2014). Poster: Towards an Instrument to Measure Everyday Privacy and Security Knowledge. 2014 Symposium On Usable Privacy and Security (SOUPS 2014)

Link zur Publikation Link zur Originalpublikation

Relative importance of depth cues on portable autostereoscopic display
Zitatschlüssel mikkola2010a
Autor Mikkola, Maija and Jumisko-Pyykkö, Satu and Boev, Atanas and Gotchev, Atanas
Buchtitel ACM Multimedia 2010
Seiten 63–68
Jahr 2010
ISBN 978-1-4503-0165-7
Workshop yes
Adresse Florence
Monat oct
Verlag ACM
Wie herausgegeben full
Zusammenfassung Depth of a three-dimensional scene is perceived using several different visual cues. The process of perceiving depth is delicate and vulnerable to artefacts. On autostereoscopic displays the aim is to enhance the sensation of reality of the experience by the added three-dimensionality without the need for aiding glasses. The factors that contribute to achieving a plausible 3D effect on autostereoscopic displays are numerous: for example stereoscopy combined with a supporting set of monocular cues: perspective lines, shadows, and textures. The goal of this study is two-fold. First, to gather knowledge on how different characteristics of a 3D scene impact the correct estimation of depth. Second, how the same characteristics impact on perceived quality. These were studied using subjective tests. The studied characteristics were chosen to be five different depth cues - three monocular and two binocular cues. The chosen monocular cues were shadows, texture and focal depth. For binocular cues, two different stereoscopic disparities were used: one optimal for a portable 3D display, and another designed for a HD resolution and later scaled down for a portable device making the disparity decrease. In addition, combination of all aforementioned cues was examined. All of the cues were also studied with three different compression levels (no compression, JPEG with quality factor of 50, and with quality factor of 90). A quantitative study using a portable autostereoscopic display in controlled laboratory environment was conducted. The results of this study indicate that the stereoscopic depth cues outperform the monocular depth cues in accuracy and speed of estimating depth in a 3D video. Interestingly enough, these results are not consistent with the ratings of perceived quality and acceptance. Furthermore, compressing images seems to have a significant effect on the accuracy and speed of depth estimation, and also on the perceived quality.
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