Preliminary Demonstration of Aerial 2D Projection via CT-Based Ray Superposition in Fog

Simple item page
dc.contributor.authorNishizawa, Masahiroen_US
dc.contributor.authorYamada, Musoen_US
dc.contributor.authorSakai, Gokien_US
dc.contributor.authorNakata, Takayukien_US
dc.contributor.editorJorge, Joaquim A.en_US
dc.contributor.editorSakata, Nobuchikaen_US
dc.date.accessioned2025-11-26T09:22:06Z
dc.date.available2025-11-26T09:22:06Z
dc.date.issued2025
dc.description.abstractVolumetric and aerial displays have been pursued as a means to present three-dimensional images viewable from any direction without head-mounted devices or glasses. However, existing approaches often suffer from limitations such as restricted viewing zones, narrow display volumes, or dependence on large screens or mechanically moving components. To address these challenges, we propose a new approach based on computed tomography (CT), which applies CT principles to projector rays visualized in fog. In this method, images are reconstructed in mid-air by superimposing rays projected from multiple angles, eliminating the need for physical projection surfaces. In this paper, we report a preliminary demonstration of this approach. We built a prototype with ten scanning laser projectors arranged in a circular configuration and tested it in a fog-filled environment. The system successfully produced faint yet recognizable two-dimensional aerial images consistent with the intended shapes. This experiment confirms the feasibility of ray-superimposed back-projection in real space, not just in simulation. This preliminary result represents an initial step toward scalable, screenless, and multi-viewable volumetric displays.en_US
dc.description.sectionheadersRendering and Sensing
dc.description.seriesinformationICAT-EGVE 2025 - International Conference on Artificial Reality and Telexistence and Eurographics Symposium on Virtual Environments
dc.identifier.doi10.2312/egve.20251354
dc.identifier.isbn978-3-03868-278-3
dc.identifier.issn1727-530X
dc.identifier.pages5 pages
dc.identifier.urihttps://doi.org/10.2312/egve.20251354
dc.identifier.urihttps://diglib.eg.org/handle/10.2312/egve20251354
dc.publisherThe Eurographics Associationen_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCCS Concepts: Hardware → Displays and imagers; Computing methodologies → Volumetric models; Human-centered computing → Mixed / augmented reality; Displays and imagers
dc.subjectHardware → Displays and imagers
dc.subjectComputing methodologies → Volumetric models
dc.subjectHuman centered computing → Mixed / augmented reality
dc.subjectDisplays and imagers
dc.titlePreliminary Demonstration of Aerial 2D Projection via CT-Based Ray Superposition in Fogen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
egve20251354.pdf
Size:
8.48 MB
Format:
Adobe Portable Document Format
Download
Collections
ICAT-EGVE2025