![]() In optical see-through (OST) HMDs the direct view of the world is mostly preserved and there is no perspective conversion in viewpoint and field of view (fov), as with video see-through (VST) systems. Wearable AR head-mounted displays (HMDs) ideally represent the most ergonomic and reliable solutions to support complex manual tasks since they preserve the user's egocentric viewpoint (Sielhorst et al., 2006 Vávra et al., 2017 Cutolo et al., 2020). ![]() This aspect, that can be referred to as locational realism (Grubert et al., 2018), is the main factor that provides the user with a sense of perceptual consistency. The overarching goal of any augmented reality (AR) display is to seamlessly enrich the visual perception of the physical world with computer-generated elements that appear to spatially coexist with it. This finding will pave the way to the development of new multi-focal models of OST HMDs specifically conceived to aid high-precision manual tasks in the peripersonal space. The results of the tests demonstrate that with our strategy the parallax-related registration error is submillimetric provided that the scene under observation stays within a suitable view volume that falls in a ☑0 cm depth range around the focal plane of the display. We model the registration error due to the viewpoint shift and we validate it on an OST display with short focal distance. To estimate the projection parameters of the OST display for a generic viewpoint position, our strategy relies on a dedicated parameterization of the virtual rendering camera based on a calibration routine that exploits photogrammetry techniques. In this work, we demonstrate the beneficial impact, on the parallax-related AR misregistration, of the use of optical see-through displays whose optical engines collimate the computer-generated image at a depth close to the fixation point of the user in the peripersonal space. Optical see-through (OST) augmented reality head-mounted displays are quickly emerging as a key asset in several application fields but their ability to profitably assist high precision activities in the peripersonal space is still sub-optimal due to the calibration procedure required to properly model the user's viewpoint through the see-through display. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |