Shadowless Projection Mapping for Tabletop Workspaces with Synthetic Aperture Projector
Takahiro Okamoto, Masaki Takeuchi, Masataka Sawayama, Daisuke Iwai

TL;DR
This paper presents a novel shadowless projection mapping system using densely arranged projectors for tabletop AR, eliminating shadows without computational delay and enhancing material perception.
Contribution
Introduces a synthetic-aperture projection mapping system with offline blur compensation, enabling delay-free, shadowless AR projection for tabletop environments.
Findings
Achieves delay-free, shadowless projection without computational compensation.
Develops an offline blur compensation method independent of projector count.
Defines and minimizes the sense of projection (SoP) for improved material perception.
Abstract
Projection mapping (PM) enables augmented reality (AR) experiences without requiring users to wear head-mounted displays and supports multi-user interaction. It is regarded as a promising technology for a variety of applications in which users interact with content superimposed onto augmented objects in tabletop workspaces, including remote collaboration, healthcare, industrial design, urban planning, artwork creation, and office work. However, conventional PM systems often suffer from projection shadows when users occlude the light path. Prior approaches employing multiple distributed projectors can compensate for occlusion, but suffer from latency due to computational processing, degrading the user experience. In this research, we introduce a synthetic-aperture PM system that uses a significantly larger number of projectors, arranged densely in the environment, to achieve delay-free,…
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Taxonomy
TopicsAugmented Reality Applications · Interactive and Immersive Displays · Advanced Optical Imaging Technologies
