Ralph Gasser
- Dr.
- Ralph Gasser
- PostDoc
- Room
- 02.001
- enycu.tnffre@havonf.pu
Profiles and Resources:
Research Topics
Projects
- DRES: Distributed Retrieval Evaluation Server
- IMOTION - Intelligent Multi-Modal Augmented Video Motion Retrieval System
- verifir - Real-time Detection and Analysis of Disinformation on the Web
- VIRTUE (VIRTUal Exhibition hall)
- vitrivr
- XRECO: XR mEdia eCOsystem
Lectures
2025 Spring Semester
2024 Fall Semester
2024 Spring Semester
2023 Fall Semester
2023 Spring Semester
2022 Fall Semester
2022 Spring Semester
2021 Fall Semester
2021 Spring Semester
2020 Fall Semester
2020 Spring Semester
2019 Fall Semester
2019 Spring Semester
2018 Fall Semester
2018 Spring Semester
2017 Fall Semester
Advised Theses
- Colin Fingerlin (Master Computer Science Project)
Media RAG: A Chatbot to Explore Multimedia Collections - Abiyuga Thanabalasingam (Bachelor Thesis)
Representative and Fair Collection Sampling for Multimedia Retrieval - Rasmus Willi (Bachelor Thesis)
A web-based user interface for Cottontail DB - Colin Saladin (Bachelor Thesis)
SIMD Support for Proximity Based Queries in Cottontail DB - Katja Keller (Bachelor Thesis)
A web-based user interface for Cottontail DB - Renato Farruggio (Bachelor Thesis)
Scene Text Recognition in Images and Video with Cineast - Florian Mohler (Bachelor Thesis)
Online Image Analysis to Identify Politicians in Twitter Images - Gabriel Zihlmann (Master Thesis)
Magnetic Resonance Fingerprinting Reconstruction using Methods from Multimedia Retrieval - Yan Wang (Bachelor Thesis)
Detecting Visual Motives Using Online Clustering of Similar Images - Samuel Börlin (Bachelor Thesis)
3D Model Retrieval using Constructive Solid Geometry in Virtual Reality - Manuel Hürbin (Master Thesis)
Retrieval Optimization in Magnetic Resonance Fingerprinting - Severin Wyss (Master Thesis)
Towards a Framework for Contextualising Potential Fake News on Twitter - Loris Sauter (Master Thesis)
Fighting misinformation: Image forgery detection in social media streams
Publications
2024
- Loris Sauter, Ralph Gasser, Heiko Schuldt, Abraham Bernstein, Luca Rossetto
Performance Evaluation in Multimedia Retrieval
ACM Transactions on Multimedia Computing, Communications and Applications, 2024/10 - Loris Sauter, Ralph Gasser, Laura Rettig, Heiko Schuldt, Luca Rossetto
General Purpose Multimedia Retrieval with vitrivr at LSC’24
LSC ‘24: Proceedings of the 7th Annual ACM Workshop on the Lifelog Search Challenge, Phuket, Thailand 2024/6 - Ralph Gasser, Rahel Arnold, Fynn Faber, Heiko Schuldt, Raphael Waltenspül, Luca Rossetto
A new Retrieval Engine for vitrivr
MMM 2024 - The 30th International Conference on Multimedia Modeling, Amsterdam, The Netherlands 2024/1
2023
- Florian Spiess, Ralph Gasser, Silvan Heller, Heiko Schuldt, Luca Rossetto
A Comparison of Video Browsing Performance between Desktop and Virtual Reality Interfaces
Proceedings of the International Conference on Multimedia Retrieval (ICMR ‘23), Thessaloniki, Greece 2023/6 - Florian Spiess, Ralph Gasser, Heiko Schuldt, Luca Rossetto
The Best of Both Worlds: Lifelog Retrieval with a Desktop-Virtual Reality Hybrid System
Proceedings of the 6th Annual ACM Lifelog Search Challenge (LSC’23), Thessaloniki, Greece 2023/6 - Loris Sauter, Ralph Gasser, Silvan Heller, Luca Rossetto, Colin Saladin, Florian Spiess, Heiko Schuldt
Exploring Effective Interactive Text-based Video Search in vitrivr
Proceedings of the 29th International Conference on Multimedia Modeling (MMM 2023), Bergen, Norway 2023/1
2022
- Ralph Gasser
Data Management for Dynamic Multimedia Analytics and Retrieval
PhD Thesis, Department of Mathematics and Computer Science, University of Basel, Switzerland 2022/11 - Loris Sauter, Ralph Gasser, Abraham Bernstein, Heiko Schuldt, Luca Rossetto
An Asynchronous Scheme for the Distributed Evaluation of Interactive Multimedia Retrieval
Proceedings of the 2nd International Workshop on Interactive Multimedia Retrieval (IMuR’22), Lisbon, Portugal 2022/10 - Silvan Heller, Rahel Arnold, Ralph Gasser, Viktor Gsteiger, Mahnaz Parian-Scherb, Luca Rossetto, Loris Sauter, Florian Spiess, Heiko Schuldt
Multi-Modal Interactive Video Retrieval with Temporal Queries
Proceedings of the 28th International Conference on Multimedia Modeling, Qui Nhon, Vietnam 2022/4 - Florian Spiess, Ralph Gasser, Silvan Heller, Mahnaz Parian-Scherb, Luca Rossetto, Loris Sauter, Heiko Schuldt
Multi-Modal Video Retrieval in Virtual Reality with vitrivr-VR
Proceedings of the 28th International Conference on Multimedia Modeling, Qui Nhon, Vietnam 2022/4
2021
- Luca Rossetto, Ralph Gasser, Silvan Heller, Mahnaz Parian-Scherb, Loris Sauter, Florian Spiess, Heiko Schuldt, Ladislav Peška, Tomáš Souček, Miroslav Kratochvíl, František Mejzlík, Patrik Veselý, Jakub Lokoč
On the User-centric Comparative Remote Evaluation of Interactive Video Search Systems
IEEE Multimedia, 2021/10 - Florian Spiess, Ralph Gasser, Silvan Heller, Luca Rossetto, Loris Sauter, Milan van Zanten, Heiko Schuldt
Exploring Intuitive Lifelog Retrieval and Interaction Modes in Virtual Reality with vitrivr-VR
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR’21), Taipei, Taiwan (held virtually) 2021/8 - Silvan Heller, Ralph Gasser, Mahnaz Parian-Scherb, Sanja Popovic, Luca Rossetto, Loris Sauter, Florian Spiess, Heiko Schuldt
Interactive Multimodal Lifelog Retrieval with vitrivr at LSC 2021
Proceedings of the ACM International Conference on Multimedia Retrieval (ICMR’21), Taipei, Taiwan (held virtually) 2021/8 - Luca Rossetto, Ralph Gasser, Loris Sauter, Abraham Bernstein, Heiko Schuldt
A System for Interactive Multimedia Retrieval Evaluations
Proceedings of the 27th International Conference on Multimedia Modeling (MMM 2021), Prague, Czech Republic (held virtually) 2021/6 - Florian Spiess, Ralph Gasser, Silvan Heller, Luca Rossetto, Loris Sauter, Heiko Schuldt
Competitive Interactive Video Retrieval in Virtual Reality with vitrivr-VR
Proceedings of the 27th International Conference on Multimedia Modeling (MMM 2021), Prague, Czech Republic (held virtually) 2021/6 - Silvan Heller, Ralph Gasser, Cristina Illi, Maurizio Pasquinelli, Loris Sauter, Florian Spiess, Heiko Schuldt
Towards Explainable Interactive Multi-Modal Video Retrieval with vitrivr
Proceedings of the 27th International Conference on Multimedia Modeling (MMM 2021), Prague, Czech Republic (held virtually) 2021/6 - Ralph Gasser, Luca Rossetto, Silvan Heller, Heiko Schuldt
Multimedia Retrieval and Analysis with Cottontail DB
ACM SIGMM Records, 2021/3
2020
- Samuel Börlin, Ralph Gasser, Florian Spiess, Heiko Schuldt
3D Model Retrieval Using Constructive Solid Geometry in Virtual Reality
Proceedings of the 3rd International Conference on Artificial Intelligence & Virtual Reality (AIVR 2020), Utrecht, The Netherlands (held virtually) 2020/12 - Ralph Gasser, Luca Rossetto, Silvan Heller, Heiko Schuldt
Cottontail DB: An Open Source Database System for Multimedia Retrieval and Analysis
Proceedings of 28th ACM International Conference on Multimedia.(ACM MM 2020) - Open Source Competition, Seattle, WA, USA (held virtually) 2020/10 - Silvan Heller, Mahnaz Amiri Parian, Ralph Gasser, Loris Sauter, Heiko Schuldt
Interactive Lifelog Retrieval with vitrivr
Proceedings of the Third Annual Workshop on Lifelog Search Challenge (LSC 2020), Dublin, Ireland (held virtually) 2020/10 - Luca Rossetto, Ralph Gasser, Jakub Lokoč, Werner Bailer, Klaus Schoeffmann, Bernd Muenzer, Tomás Souček, Phuong Anh Nguyen, Paolo Bolettieri, Andreas Leibetseder, Stefanos Vrochidis
Interactive Video Retrieval in the Age of Deep Learning – Detailed Evaluation of VBS 2019
IEEE Transactions on Multimedia, 2020/3 - Loris Sauter, Mahnaz Amiri Parian, Ralph Gasser, Silvan Heller, Luca Rossetto, Heiko Schuldt
Combining Boolean and Multimedia Retrieval in vitrivr for large-scale Video Search
Proceedings of the 26th International Conference on MultiMedia Modeling, Daejeon, Korea 2020/1
2019
- Luca Rossetto, Ralph Gasser, Heiko Schuldt
Query by Semantic Sketch
arXiv cs.MM, 2019/9 - Ralph Gasser, Luca Rossetto, Heiko Schuldt
Multimodal Multimedia Retrieval with vitrivr
Proceedings of the International Conference on Multimedia Retrieval (ICMR), Ottawa, ON, Canada 2019/6 - Luca Rossetto, Ralph Gasser, Silvan Heller, Mahnaz Amiri Parian, Heiko Schuldt
Retrieval of Structured and Unstructured Data with vitrivr
Proceedings of the International Conference on Multimedia Retrieval (ICMR), Ottawa, ON, Canada 2019/6 - Ivan Giangreco, Loris Sauter, Mahnaz Amiri Parian, Ralph Gasser, Silvan Heller, Luca Rossetto, Heiko Schuldt
VIRTUE — A Virtual Reality Museum Experience
Proceedings of the 24th ACM International Conference on Intelligent User Interfaces (IUI’19), Los Angeles, CA, USA 2019/3 - Luca Rossetto, Mahnaz Amiri Parian, Ralph Gasser, Ivan Giangreco, Silvan Heller, Heiko Schuldt
Deep Learning-based Concept Detection in vitrivr at the Video Browser Showdown 2019 - Final Notes
arXiv cs.MM, 2019/2 - Jakub Lokoc, Gregor Kovalcic, Bernd Münzer, Klaus Schöffmann, Werner Bailer, Ralph Gasser, Stefanos Vrochidis, Phuong Anh Nguyen, Sitapa Rujikietgumjorn, Kai Uwe Barthel
Interactive Search or Sequential Browsing? A Detailed Analysis of the VBS 2018
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMM), 2019/2 - Ralph Gasser, Luca Rossetto, Heiko Schuldt
Towards an All-Purpose Content-Based Multimedia Information Retrieval System
arXiv cs.MM, 2019/2 - Luca Rossetto, Mahnaz Amiri Parian, Ralph Gasser, Ivan Giangreco, Silvan Heller and Heiko Schuldt
Deep Learning-based Concept Detection in vitrivr
Proceedings of the 25th International Conference on MultiMedia Modeling, Thessaloniki, Greece 2019/1
2018
- Luca Rossetto, Ivan Giangreco, Ralph Gasser and Heiko Schuldt
Competitive Video Retrieval with vitrivr at the Video Browser Showdown 2018 - Final Notes
arXiv cs.MM, 2018/5 - Luca Rossetto, Ivan Giangreco, Ralph Gasser and Heiko Schuldt
Competitive Video Retrieval with vitrivr
Proceedings of the International Conference on Multimedia Modeling (MMM), Bangkok, Thailand 2018/2
2017
- Luca Rossetto, Ivan Giangreco, Ralph Gasser and Heiko Schuldt
Content-based Multimedia Retrieval using vitrivr
ACM SIGMM Records, 2017/12