Sophie Kergaßner
I am a PhD student under the supervision of Prof. Piotr Didyk at Università della Svizzera italiana in Lugano, Switzerland. My research interest lies in the quantification of human vision, and the manipulation of images for improved perceptual quality and efficient rendering, especially for AR/VR displays.
I am a second year PhD student under the supervision of Prof. Piotr Didyk at Università della Svizzera italiana in Lugano, Switzerland. My research interest lies in the quantification of human vision, and the manipulation of images for improved perceptual quality and efficient rendering, especially for AR/VR displays.
Publications
Towards Understanding Depth Perception in Foveated Rendering
ACM SIGGRAPH 2025
We demonstrate that stereoacuity is remarkably resilient to foveated rendering and remains unaffected with up to 2× stronger foveation than commonly used. To this end, we design a psychovisual experiment and derive a simple perceptual model that determines the amount of foveation that does not affect stereoacuity.
HiveFive360: Extending the VR Gaze Guidance Technique HiveFive to Highlight Out-Of-FOV Targets
Proc. Mensch und Computer 2024
Honorable Mention Paper Award 🏅
We extend the gaze guidance technique HiveFive to guide users to out-of-FOV targets. Our technique is qualitatively and quantitatively evaluated in two user studies. Our results show that HiveFive360 is effective in guiding users to a target object, and diegetic, meaning that the scenic immersion of the scene is preserved.
Evaluating the Angular Resolution of a Simulated Light Field Display in Regards to Three-Dimensionality, Motion Parallax and Viewing Experience
Electronic Imaging 2023
We show that the viewing experience of a multiview screen increases logarithmically with the presented number of views. This rise stagnates at around 0.25° per view. Below 0.5° per view, participants prefer a common 2D display.