Multimedia Knowledge and Social Media Analytics Laboratory

Virtual and Augmented Reality


Virtual and augmented reality are currently considered among the technologies with the highest expected impact on user experience. Next to the low-cost and high-performance hardware for VR and AR, we may add the 3D digitization of objects and scenes that is becoming mainstream, as well as the ability to interlink content. All the above constitute the perfect setting for allowing the remote and on-site visitors of museums and cultural sites, to enjoy a drastically different experience. Following this trend, MKLab has set the goal of changing the way we experience culture using novel paradigms of virtual and augmented Reality.  

Virtual Reality:

Virtual Reality (VR) has been constantly gaining industrial interest with companies like Oculus, Samsung, HTC, and Google having reduced the cost of a VR headset to few hundred euros. VR aims at offering a unique experience by allowing its users to immerse into a virtual world. Although the VR technology has been primarily targeted to improve the experience of users while playing games, it has already paved its way to other types of immersive applications such as in the domain of Culture. Our ambition in MKLab is to make virtual reality an integral part of the museum experience. Towards this direction we have developed the following expertise:

  • Semantic analysis of 3D content, including segmentation, recognition and indexing
  • Design of high-quality 3D models and animations using Cinema4D
  • Game play design using Unity3D – Game Engine
  • Development of a story-telling engine with WebGL so as to facilitate the authoring of cultural stories by curators.
  • Large scale digitization of cultural sites using drones and photogrammetry.
Augmented Reality:

Augmented reality (AR) is currently one of the most dynamically evolving technologies for engaging users and enhancing their experience with major players like Apple, Google, Microsoft, Epson and Meta showing great interest about it. It is based on the idea that data can be overlaid on the view of the real world and its use has already spread in various application fields such as medicine, education, entertainment, navigation, advertisement and education. In the case of Museums, visitors can see paintings and objects changing via smart-phones. The smart-phones can recognize the paintings and overlay videos on the device screen. Equivalently, in a typical AR scenario of an archeological site, by moving the mobile device around, the monument borders can be identified and the AR marker that describes the monument will be positioned exactly above the monument. In our effort to implement the aforementioned scenarios, we have developed the following expertise:

  • Developed fast algorithms for mobile visual recognition balancing between accuracy and computational cost
  • Mastered a high number of commercial and open source SDKs for mobile augmented reality
  • Investigated the available options for indoors and outdoors AR 
Key Publications: 

D. Ververidis, S. Nikolopoulos, I. Kompatsiaris, "Transforming your website to an augmented reality view", Proc. of the 14th IEEE International Symposium on Mixed and Augmented Reality, Fukuoka, Japan, 29 Sep - 3 Oct, 2015

Elisavet Chatzilari, Georgios Liaros, Spiros Nikolopoulos and Yiannis Kompatsiaris. "A comparative study on mobile visual recognition", 9th International Conference on Machine Learning and Data Mining (MLDM 2013), New York, USA, July 19-25, 2013.