We are very happy to announce we are graduating, and would like to welcome you to our presentations!
Date: Monday June 11th
Time: 13:30
Location: Gravensteen
Pieterskerkhof 6, Leiden
13:30 -14:05 Barry Borsboom
Guess Who?: A game to crowdsource the labeling of affective facial expressions is comparable to expert ratings.
14:15 - 14:50 Roland Brouwer
Using Gestures as an identification mechanism on mobile devices.
14:50 - 15:10 Short Break
15:10 - 15:45 Marijke van Gorp
Playful ways to find an allergy friendly recipe.
15:55 - 16:30 Peter Curet
A Tangible User Interface for Exploring Microscopic Visualizations
Extended descriptions:
Barry Borsboom
Guess Who?: A game to crowdsource the labeling of affective facial expressions is comparable to expert ratings.
Abstract: This paper demonstrates the use of a crowdsourced human computation game to accumulate annotations from non-experts as a means to provide labels for an affective facial expression database. In order to do so, a human computation game is played, in which players are encouraged to ask each other related facial expression questions. These questions are based on the Facial Action Coding System. Emphasis is placed on the participant’s overall understanding of the task and on the ease-of-use of the game so that labeling accuracy is reinforced. Additional game mechanics can be used in future work to encourage players to keep playing the game. This crowdsourced labeling of an affective facial expressions database is important because the manual labeling of an affective database can be relatively expensive and time consuming. Our game shows that non-experts are comparable in labeling our affective database based on the ground truth.
Supervised by: Joost Broekens, Maarten Lamers & Edwin van der Heide
Roland Brouwer
Using Gestures as an identification mechanism on mobile devices.
Abstract: Research on gesture-recognition engines has allowed these engines to be implemented in a wide range of apparatus in recent years. It allows users to control touch-interfaces with more freedom and has exposed a broader audience to use gestures in day to day applications. Research in this field has sought to make gesture-recognition engines to be as flexible as possible, thus allowing users more freedom in the performance of gestures. In this study it has been proposed that participants can be identified by analyzing the execution of gestures on platforms which utilize touch-screens. In order to do so a number of gesture-samples have been collected and analyzed by letting participants play a game on a mobile phone equipped with a capacitive touch-surface. The game has been developed to enforce users to perform the gestures as fast as they can without being able to reflect on what has been drawn. To compare the collected gesture-paths for dynamic characteristics the dynamic time warping algorithm has been employed. With this method a 88-99% recognition rate for finding variation in gestures has been achieved. However for future work it is recommended that gestures are compared with the same method while using a standard environment instead of a game-environment.
Supervised by: Edwin van der Heide
Marijke van Gorp
Playful ways to find an allergy friendly recipe.
Abstract: This paper focuses on how an allergy friendly recipe can be found by relatives or friends in a playful way. This research takes a deeper look at how taste refers to the memory. Comparing cookbooks, recipe magazines, recipe websites and allergy friendly products to see the difference in the representation of food and how these existing products are helpful/not helpful for relatives or friends when choosing an allergy friendly recipe. To choose an allergy friendly recipe in the future it is important that the relatives or friends see the possibilities of choosing an allergy friendly recipe. In this case an environmental change is necessary. The research focuses also on easy to get ingredients for example from the supermarket. Alternative models will be described in contrast to today’s existing products and their
shortcomings.
Supervised by: Edwin van der Heide
Peter Curet
A Tangible User Interface for Exploring Microscopic Visualizations
Abstract: Acquisition using current microscopy techniques allows us to explore the inner three-dimensional structures of minuscule biological phenomena. The goal of this research is to suggest a more accessible way of exploring these three-dimensional volumes by creating a tactile and engaging experience for users. A tangible user interface was designed for viewing and navigating through 3D bio-images. The interface is a spatially aware display whose position and orientation directly relate to a digital optical slice within a 3D volume, seemingly serving as a navigational device as well as the view-port into a specimen. Several interaction modes were developed for the interface. Subsequently the usability and the experience offered by these interaction modes were evaluated in a user-study. Results from the evaluation show the interface was intuitive and could aid in remembering locations of specific points due to the spatial nature of the interactions.
Supervised by: Fons Verbeek
