Two USI studies presented at ACM SIGGRAPH 2023

Two research studies carried out at USI by Professor Piotr Didyk from the Faculty of Informatics were presented at ACM SIGGRAPH, the world's largest computer graphics conference.  

In the first study, entitled 'Gloss-aware Colour Correction for 3D Printing', USI researchers in collaboration with the Bickel Group of the Institue of Science and Technology Austria conducted a new experiment to validate the perceived colour shift due to changes in an object's gloss.  

Colour and gloss are fundamental aspects of a surface's appearance. Two objects can have the same colour, but different surface gloss can make them appear different.  

This innovative work presented at the SIGGRAPH conference takes us one step closer to achieving accurate colour reproduction in 3D printing, opening up a world of possibilities in design, manufacturing, art and beyond. 

The second study is entitled "Perceptual Visibility Model for Temporal Contrast Changes in Periphery" and was conducted by Professor Piotr Didyk in collaboration with Dr Cara Tursun, a former USI postdoctoral researcher and now Assistant Professor at the University of Groningen. This research addresses problems related to content generation for VR and AR display, through new psychophysical experiments that measure the sensitivity of the human eye to different spatio-temporal luminance patterns throughout the visual field.  

"Both works - explains Prof. Piotr Didyk -  demonstrate the potential of incorporating knowledge of how our brain perceives visual information into methods for generating content for displays and 3D printing. The first project looked into how our brain processes color and gloss information. We used the results to improve color reproduction in 3D printing. Many applications, such as prototyping, visualization, education, prosthetics, or art, can now benefit from more accurate colors. The second work provided insights into the limits of what our eyes can see. The topic is critical for the development and adoption of new VR and AR displays. Our methods move us towards more efficient rendering techniques and user interfaces for such devices"

For more information: 

https://www.pdf.inf.usi.ch/projects/ColorGlossPrinting/
https://www.pdf.inf.usi.ch/projects/TemporalVisibility/