February 2024 - Cix-all - lists.saarland-informatics-campus.de

Student Seminar
by Marie Mühlhaus 23 Feb '24

23 Feb '24

Hi all, We will have a student presentation upcoming Wednesday (28.02.2024) at 1:00 pm. Divya Balasubramani will be presenting her final Master thesis talk. You can find the thesis title and abstract below. The presentation will take place in E1.7, room 001. Best regards, Marie ------------------------------------------------------ Title: Design and Implementation of Intervening Interactions for an Arm-Based Exoskeleton Abstract: Wearable robotics like exoskeletons have substantial potential to assist daily human activities by augmenting performance and providing support to work independently. Exoskeletons are external frameworks attached to our bodies to enhance our physical capabilities. These exoskeletons are increasingly becoming autonomous, where the exoskeleton takes control of our body completely by making decisions and performing the configured tasks autonomously. This has raised safety concerns as the exoskeleton is consistently attached to the body highlighting the necessity of precise control over them. Moreover, there would be some emergency or uncomfortable scenarios such as the exoskeleton is moving in unbearable speed or moving in uncomfortable range of arm, where users should intervene the exoskeleton movement to stop or adjust them according to their preferences. Therefore, in this thesis, we propose a novel method to human-exoskeleton interaction termed "intervening interactions", where the users could seamlessly intervene the default movements of the exoskeleton. We designed and implemented 6 different intervening interactions which will alter the motion of the exoskeleton. These can be used to quickly stop the exoskeleton in cases of emergency, or to change speed or direction of the current motion in case they don't fit user expectations, or repeat or reset the previous motion. Then the implementation of intervening interactions is achieved by building a real-time gesture classification system that could detect and classify the user interventions. This involves the steps of building arm-based exoskeleton of 1 degree of freedom with suitable sensors like Inertial Measurement Unit (IMU) and Force-sensing resistor (FSR) which could detect the intervening interactions. Next, we conducted data collection with 14 participants using the constructed exoskeleton to collect the readings for the six designed intervening interactions. Then, a semi-structured interview and questionnaire are conducted to comprehend the users' experiences and their views regarding the interventions and the gestures. Subsequently, the quantitative and the qualitative analysis of the results gives valuable insights about the importance of the interventions especially in exercises, the seamless integration of gestures with the motion of exoskeleton and the suggestions for additional intervening interactions from the user. Their answers revealed the comparisons between performing different intervening interactions in terms of both physical and mental effort. Finally with the collected dataset, the gesture classification system is implemented using both time series- and statistics-based approaches. For the real-time implementation, the optimal classifier model is selected by assessing the accuracy and the effectiveness of both the approaches for real time predictions. After the evaluation of the models in both approaches, we implemented the person independent Gradient Boost model from statistical approach for real time prediction.

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[HCI-Stammtisch] March 06, 2024 | Visit of VR Researchers Daniel Zielasko and Benjamin Weyers from Uni Trier
by André Zenner 20 Feb '24

20 Feb '24

Hi all, Daniel Zielasko and Benjamin Weyers (VR researchers from the University of Trier and the General Chairs of this year's VRST conference) will be visiting us on March 6, 2024. They'll be giving a short talk about their VR research from 11:00 to 12:00 in the VisCenter at DFKI and it would be great if many of you could attend this talk in person. If you are doing VR-related research, this is a great opportunity to connect to Daniel and Benjamin 🙂 Thanks & best, André & Flo -- Dr. André Zenner Researcher Saarland University & Deutsches Forschungszentrum für Künstliche Intelligenz GmbH (DFKI) Ubiquitous Media Technology Lab (UMTL) & Cognitive Assistants (COS) Stuhlsatzenhausweg 3 66123 Saarbrücken Germany Tel: +49 681 85775 5117 Email: andre.zenner(a)dfki.de Web: https://umtl.cs.uni-saarland.de/people/andre-zenner.html Weitere Informationen: https://www.dfki.de Firmensitz: Trippstadter Straße 122, D-67663 Kaiserslautern Geschäftsführung: Prof. Dr. Antonio Krüger (Vorsitzender) Helmut Ditzer Vorsitzender des Aufsichtsrats: Dr. Ferri Abolhassan Amtsgericht Kaiserslautern, HRB 2313 _______________________________________________ HCI-Stammtisch mailing list HCI-Stammtisch(a)dfki.de https://www.dfki.de/mailman/cgi-bin/listinfo/hci-stammtisch

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[HCI-Stammtisch] Summer School on Computational Interaction in Luxembourg
by Anna Maria Feit 20 Feb '24

20 Feb '24

Dear all, the8th Summer School on Computational Interaction <https://cixschool2024.uni.lu/index.html> will be organized in Luxembourg this year, from 3rd to 7th of June. The registration period is open and you can apply to participate until 28th of February! This is a great way to learn about computational methods and their applications to HCI problems AND to connect with other PhD students and researchers in HCI and computational interaction. Seriously, the community aspect is one of the best parts of it but also the teaching is always of very high quality! Would be great to see some of you there. I'm happy to answer any questions you might have! And please spread the word. Anna -- Professor of Computer Science at Saarland University Saarland Informatics Campus E1 7, R3.09 Computational Interaction Group https://cix.cs.uni-saarland.de/ _______________________________________________ HCI-Stammtisch mailing list HCI-Stammtisch(a)dfki.de https://www.dfki.de/mailman/cgi-bin/listinfo/hci-stammtisch

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Student Seminar
by Marie Mühlhaus 16 Feb '24

16 Feb '24

Hi all, We will have a student presentation upcoming Wednesday (21.02.2024) at 1:00 pm. Salwa Alam will be presenting her first Master thesis talk. You can find the thesis title and abstract below. The presentation will take place in E1.7, room 001. Best regards, Marie ------------------------------------------------------ Title: Exploring the Efficacy of Tactile Stroking in Virtual Reality: A Comparative Analysis of Interaction Modalities Abstract: In the field of virtual reality (VR), touch and feel are indeed challenging aspects to replicate convincingly. Haptic feedback is used to incorporate touch sensations into VR experiences by enhancing user experiences in digital environments. In VR, haptic feedback increases immersion, enabling users to physically interact with virtual objects. Previous studies have demonstrated various actuation methods for rendering affective touch, such as integrating vibration with haptic illusions, employing a soft brush to gently brush one’s forearm. However, this field remains largely unexplored, lacking studies that specifically examine the different range of stroking sensations enabled by haptic devices to enhance the user experience in virtual reality (VR). In this paper we present a novel protocol on incorporating a brushing technique design into a wearable haptic device, aiming to enhance tactile sensations in VR. Additionally, we intend to design a wearable device to assess affective touch as a stroking sensation. In this study, we will compare two different types of stroking sensations (one with vibration and another without vibration) with varying parameters(distance, speed and vibration pattern) made by the avatar in VR to check if the usage of various tactile sensations improve the user experience in virtual reality. By improving the quality and effectiveness of tactile feedback, this study contributes to enriching VR experiences and advancing the field of haptic technology.

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[HCI-Stammtisch] Ein neuer Zahlungsplan wurde genehmigt.
by hci-stammtisch＠dfki.de 13 Feb '24

13 Feb '24

Hallo Perversling, Ich möchte dich über eine sehr schlechte Situation für dich informieren. Du kannst jedoch davon profitieren, falls du klug handelst. Hast du schon von Pegasus gehört? Dabei handelt es sich um ein Spyware-Programm, das sich auf Computern und Smartphones installiert und es Hackern ermöglicht, die Aktivitäten der Gerätebesitzer zu überwachen. Es ermöglicht den Zugriff auf deine Webcam, Messenger, E-Mails, Anrufaufzeichnungen usw. Es funktioniert gut auf Android, iOS und Windows. Ich vermute, du hast bereits herausgefunden, worauf ich hinaus will. Es ist schon ein paar Monate her, dass ich es auf all deinen Geräten installiert habe, weil du beim Anklicken von Links im Internet nicht sehr wählerisch warst. In dieser Zeit habe ich alle Aspekte Ihres Privatlebens kennengelernt, aber einer ist für mich von besonderer Bedeutung. Ich habe viele Videos von dir aufgenommen, in denen du dir zu höchst umstrittenen Pornovideos einen runterholst. Da das "fragwürdige" Genre fast immer das gleiche ist, kann ich daraus schließen, dass du eine kranke Perversion hast. Ich bezweifle, dass du willst, dass deine Freunde, Familie und Kollegen davon erfahren. Aber ich kann mit ein paar Klicks dafür sorgen. Jede Nummer in deinem Kontaktbuch wird plötzlich diese Videos erhalten - auf WhatsApp, auf Telegram, auf Skype, auf E-Mail - überall. Es wird ein Tsunami sein, der alles mit sich reißt, was sich ihm in den Weg stellt, und vor allem dein früheres Leben. Betrachte dich nicht als unschuldiges Opfer. Niemand weiß, wohin deine Perversion in Zukunft führen könnte. Betrachte dies also als eine Art verdiente Strafe, um dich aufzuhalten. Besser spät als nie. Ich bin eine Art Gott, der alles sieht. Aber keine Panik. Wie wir wissen, ist Gott barmherzig und vergebend, und ich auch. Aber meine Barmherzigkeit ist nicht kostenlos. Überweise 1490 EUR auf meine Bitcoin-Brieftasche:13H5YgNiXbobfvctiK7sjhWKAGu1D9W1dZ Sobald ich die Bestätigung der Transaktion erhalte, werde ich alle Videos, die dich kompromittieren, dauerhaft löschen, Pegasus von all deinen Geräten deinstallieren und aus deinem Leben verschwinden. Du kannst sicher sein - mein Nutzen ist nur Geld. Sonst würde ich dir nicht schreiben, sondern dein Leben ohne ein Wort in einer Sekunde zerstören. Ich werde benachrichtigt, wenn du meine E-Mail öffnest, und von diesem Moment an hast du genau 48 Stunden Zeit, um das Geld zu überweisen. Wenn Kryptowährungen für dich Neuland sind, mache dir keine Sorgen, es ist ganz einfach. Googele einfach "Krypto-Börse" und dann wird es nicht schwieriger sein, als ein paar nutzlose Dinge bei Amazon zu kaufen. Ich warne dich dringend vor dem Folgenden: ) Bitte antworte nicht auf diese E-Mail. Ich habe sie über eine temporäre E-Mail gesendet, so dass ich nicht auffindbar bin. ) Wende dich nicht an die Polizei. Ich habe Zugang zu all deinen Geräten, und sobald ich herausfinde, dass du zur Polizei gelaufen bist, werden Videos veröffentlicht. ) Versuche nicht, deine Geräte zurückzusetzen oder zu zerstören. Wie ich bereits erwähnt habe: Ich überwache alle deine Aktivitäten, also stimme entweder meinen Bedingungen zu oder die Videos werden veröffentlicht. Vergesse auch nicht, dass Kryptowährungen anonym sind. Es ist also unmöglich, mich anhand der angegebenen Adresse zu identifizieren. Viel Glück, mein perverser Freund. Ich hoffe, dies ist das letzte Mal, dass wir voneinander hören. Und ein freundlicher Rat: Sei von nun an nicht mehr so sorglos mit deiner Online-Sicherheit. _______________________________________________ HCI-Stammtisch mailing list HCI-Stammtisch(a)dfki.de https://www.dfki.de/mailman/cgi-bin/listinfo/hci-stammtisch

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Student Seminar
by Marie Mühlhaus 02 Feb '24

02 Feb '24

Hi all, We will have two student presentations upcoming Wednesday (07.02.2024) at 1:00 pm. First, Julia Töws will be presenting her final Bachelor thesis talk. Then, Marie Schmidt will be presenting her first Bachelor thesis talk. You can find the thesis titles and abstracts below. The presentation will take place in E1.7, room 001. Best regards, Marie ————————————Julia Töws—————————————— Title: Co-creative 3D Modeling in VR: Investigating AI Representation Modes Abstract: Recent HCI research has highlighted the domain of Extended Reality (XR) as a superior interface for 3D modeling compared to traditional 2D interfaces. Concurrently, research for generative AI is rapidly advancing, with increased development specifically in the field of 3D object generation. This work aims to shine light on a little-researched intersection of the aforementioned fields: Co-creative systems for 3D modeling in XR. Co-creative systems - software allowing human users to work together with AI to collaboratively work on shared artifacts - are often evaluated in terms of functionality, with little focus on users' perceptions of and subjective experiences with the system. In this work, we examine whether different aspects of visualizing a co-creative AI and its contributions can affect such perceptual factors. We conducted an empirical study investigating the three aspects of AI contribution highlighting, incremental contribution visualization, and AI embodiment, using a simplified implementation of a co-creative 3D modeling system in VR. Quantitative and qualitative data was collected from questionnaires, system logs, observations, and interviews. Our analysis shows differing effects across the three visualization aspects: Highlighting was not found to affect any of our measures on participants' perceptions and behavior. Incremental visualization was primarily perceived as bothersome, though evaluations tended to differ when embodiment was additionally enabled. Embodiment showed the strongest effects on human-AI relationships and attribution of contributions to the AI. Though the generalizability of our findings is limited, this work raises attention to a number of HCI-related questions for XR and co-creativity research to explore in the future. ————————————Marie Schmidt———————————— Title: Exploring Fabric Actuation and Deformation Through Magnetic Force Abstract: Clothing is more than just a functionality-based item, it is also a form of self-expression. Fabric actuation can offer exciting ways to support this need for self-expression through movement and shape-change. Current fabric actuation techniques often use Shape-Memory-Alloys, since their wire-like structure affords easy integration as well as versatile actuation movement. However, their actuation is rather slow-paced, limiting the possibility for rapid or high frequency actuation. While pneumatic or robotic approaches offer fast-paced actuation, the required hardware is pretty bulky, making it difficult to integrate into fabric. To address this, my bachelor thesis is exploring the use of magnetic force as an actuation mechanism for fabrics. Through a systematic investigation, I identify and evaluate different actuation possibilities with magnetic force, culminating in a design workshop to explore potential applications

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