Grasp

Studying Pseudo-Stiffness Perceptual Thresholds in a VR Grasping Task Pseudo-Haptic techniques, or visuo-haptic illusions, leverage user’s visual dominance over haptics to alter the users’ perception. As they create a discrepancy between virtual and physical interactions, these illusions are limited to a perceptual threshold. Many haptic properties have been studied using pseudo-haptic techniques, such as weight, shape or size. In this paper, we focus on estimating the perceptual thresholds for pseudo-stiffness in a virtual reality grasping task. We conducted a user…

We present a novel computational model to favour bare-hands interactions with haptic technologies in Virtual Realityenvironments. Using grasp taxonomies defined in the literature, we broke down users’ gestures into four key geometrical features and developed a model which dynamically predicts the users future within-object grasp intentions locations. The model supports a wide range of grasps including precision and power grasps, pulling or pushing as well as two-handed interactions. Moreover, its implementation does not require calibration (no parameter, user-independent) nor specific…