Roberto Montano

I am a research fellow in Interactive Graphics at the Interact-lab from the University of Sussex. Under the supervision from Prof. Sriram Subramanian, I completed my PhD on computational 3D interaction techniques for immersive Virtual Reality.

Before joining to the Interact-lab, I received my MSc in Electronics at the National Institute of Technology of Mexico.

I am interested on optimisation techniques to improve human factors in Virtual Reality. I am currently working on the principles of wavefront manipulation and metamaterials to explore a combination of acoustic levitation, mid-air haptics and parametric audio.

R.Montano-Murillo@sussex.ac.uk

  • Department of Engineering and Informatics
  • University of Sussex
  • Brighton, UK

Projects

Erg-O
Erg-O

Improving users’ comfort on VR interactions with full body tracking systems by the combination of ergonomics methods

NaviFields
NaviFields
Interaction Mappings
Interaction Mappings

Computational approaches for the semi-automatic generation of gesture mappings for devices with low gestural resolution

VR applications are widely used, involving increasingly challenging conditions such as realism, the feeling of presence and comfort. Full body tracking interactions improve naturalness in VR interfaces. Nevertheless, this kind of interactions involves large movements resulting in high physical effort. Erg-O project introduces “Ergonomic Retargeting” which focusses on improving user’s comfort in full body interactions in VR by warping the 3D space with controlled distortions reducing user’s movement ratios (reducing effort) and hacking users perception to create the illusion of interaction with all elements in the original place.

NaviFields quantifies the requirements for precise navigation of each point of the environment, allowing natural navigation within relevant areas, while scaling users’ displacements when travelling across non-relevant spaces. This expands the size of the navigable space, retains the natural navigation metaphor and still allows for areas with precise control of the virtual head.

We present an approach for the semi-automatic generation of gesture mappings for devices with low gestural resolution such as the Myo Armband, an off-the-shelf EMG capture device. As an exemplar interactive task, we use text-entry: a pervasive and highly complex interaction. We quantify data related to interaction combining systematic studies (i.e., error, speed, accuracy) and semi-structured workshops with experts (e.g., cognitive load, heuristics). The results indicate that our hybrid approach can yield better results than either pure user-driven methodologies or pure data-driven approaches, for our application context featuring a large solution space and complex high-level factors.

Scale adaptive techniques for VR navigation enable users to navigate spaces larger than the real space available, while allowing precise interaction when required. However, due to these techniques gradually scaling displacements as the user moves (changing user’s speed), they introduce a Drift effect. That is, a user returning to the same point in VR will not return to the same point in the real space. This mismatch between the real/virtual spaces can grow over time, and turn the techniques unusable (i.e., users cannot reach their target locations). In this project, we characterise and analyse the effects of Drift, highlighting its potential detrimental effects. We also propose two techniques to correct Drift effects and use a data driven approach (using navigation data from real users with a specific scale adaptive technique) to tune them, compare their performance and chose an optimum correction technique and configuration.

Publications

“Erg-O: Ergonomic Optimization of Immersive Virtual Environments”

Roberto Montano-Murillo; Sriram Subramanian; Diego Martinez-Plasencia (2017) In: ACM Symposium on User Interface Software and Technology  (UIST 2017) October 2017,  Quebec City, Canada.

DOI: 10.1145/3126594.3126605

 

 

“NaviFields: Relevance Fields for Adaptive VR Navigation”

Roberto Montano-Murillo; Elia Gatti, Miguel Oliver-Segovia, Marianna Obrist, Jose Molina-Masso, Diego Martinez-Plasencia (2017) In: ACM Symposium on User Interface Software and Technology  (UIST 2017) October 2017,  Quebec City, Canada.

DOI: 10.1145/3126594.3126645

 

 

“Designer Led Computational Approach to Generate Mappings for Devices with Low Gestural Resolution”

Roberto Montano-Murillo; Teng Han, Pourang Irani, Diego Martinez-Plasencia and Sriram Subramanian (2019) In: The 17th IFIP TC.13 International Conference on Human-Computer Interaction (INTERACT 2019) September, 2019. Paphos, Cyprus.

DOI: available soon

 

 

“Drift-Correction Techniques for Scale-Adaptive VR Navigation”

Roberto A. Montano-Murillo, Patricia I. Cornelio-Martinez, Sriram Subramanian and Diego Martinez-Plasencia (2019). In ACM Symposium on User Interface Software and Technology  (UIST 2019) New Orleans, USA.

DOI: available soon