Università della Svizzera italiana

Luminance-contrast-aware foveated rendering

Tursun, Okan Tarhan ; Arabadzhiyska-Koleva, Elena ; Wernikowski, Marek ; Mantiuk, Radosław ; Seidel, Hans-Peter ; Myszkowski, Karol ; Didyk, Piotr

In: ACM transactions on graphics, 2019, vol. 38, no. 4, p. 14 p

Current rendering techniques struggle to fulfill quality and power efficiency requirements imposed by new display devices such as virtual reality headsets. A promising solution to overcome these problems is foveated rendering, which exploits gaze information to reduce rendering quality for the peripheral vision where the requirements of the human visual system are significantly lower. Most of...

Università della Svizzera italiana

Reducing simulator sickness with perceptual camera control

Hu, Ping ; Sun, Qi ; Didyk, Piotr ; Wei, Li-Yi ; Kaufman, Arie E.

In: ACM transactions on graphics, 2020, vol. 38, no. 6, p. 15 p

Virtual-reality provides an immersive environment but can induce cybersickness due to the discrepancy between visual and vestibular cues. To avoid this problem, the movement of the virtual camera needs to match the motion of the user in the real world. Unfortunately, this is usually difficult due to the mismatch between the size of the virtual environments and the space available to the users...

Università della Svizzera italiana

Fabrication-in-the-loop co-optimization of surfaces and styli for drawing haptics

Piovarči, Michal ; Kaufman, Danny M. ; Levin, David I. W. ; Didyk, Piotr

In: ACM transactions on graphics, 2020, vol. 39, no. 4, p. 16 p

Digital drawing tools are now standard in art and design workflows. These tools offer comfort, portability, and precision as well as native integration with digital-art workflows, software, and tools. At the same time, artists continue to work with long-standing, traditional drawing tools. One feature of traditional tools, well-appreciated by many artists and lacking in digital tools, is the...

Università della Svizzera italiana

Towards spatially varying gloss reproduction for 3D printing

Piovarči, Michal ; Foshey, Michael ; Babaei, Vahid ; Rusinkiewicz, Szymon ; Matusik, Wojciech ; Didyk, Piotr

In: ACM transactions on graphics, 2020, vol. 39, no. 6, p. 13 p

3D printing technology is a powerful tool for manufacturing complex shapes with high-quality textures. Gloss, next to color and shape, is one of the most salient visual aspects of an object. Unfortunately, printing a wide range of spatially-varying gloss properties using state-of-the-art 3D printers is challenging as it relies on geometrical modifications to achieve the desired appearance. A...