Psychophysical experiment examining object properties of physical props in virtual reality
Authors
Toma, Nicky Robert ; Szekér, Márk
Term
4. term
Education
Publication year
2021
Submitted on
2021-05-28
Pages
59
Abstract
This project examines haptics (the sense of touch) and objects’ physical properties to learn which properties matter most when a physical prop stands in for a virtual object, and how much mismatch is acceptable. We used two everyday items—a pan and a hammer—and varied three properties: surface texture, size, and shape. Each property was given three fidelity levels (with 0 as the most inaccurate), and the virtual models were created to resemble the real objects as closely as possible. We reviewed prior studies to select suitable techniques and then ran an evaluation at Aalborg University Copenhagen. Due to COVID-19, the sample was very small. Despite this limitation, the analysis indicates that size is more important than surface texture or shape when matching a physical object to its virtual counterpart. The data also suggests that texture and shape can be at fidelity level 1 and still be registered as a match between the virtual object and the physical prop.
Dette projekt undersøger haptik (berørings-/følesansen) og fysiske egenskaber ved genstande for at finde ud af, hvilke egenskaber der betyder mest, når et fysisk rekvisit skal svare til en virtuel genstand, samt hvor stor afvigelse der kan accepteres. Vi brugte en pande og en hammer og varierede tre egenskaber: overfladetekstur, størrelse og form. For hver egenskab blev der lavet tre fidelitetsniveauer (hvor 0 var mest unøjagtigt), og de virtuelle modeller blev udformet, så de lignede de virkelige genstande bedst muligt. Vi gennemgik tidligere studier for at vælge passende teknikker til evalueringen og gennemførte derefter en test på Aalborg Universitet, campus København. På grund af COVID-19 var deltagerantallet meget lavt. Trods denne begrænsning viser analysen, at størrelse er vigtigere end overfladetekstur og form, når man skal matche en fysisk genstand med dens virtuelle modstykke. Dataene indikerer også, at tekstur og form kan være på fidelitetsniveau 1 og stadig blive registreret som et match mellem den virtuelle genstand og det fysiske rekvisit.
[This apstract has been rewritten with the help of AI based on the project's original abstract]