Abstract
With the rapid development of interactive technology, creating systems that allow users to define their interactive envelope freely and provide multi-interactive modalities is important to build up an intuitive interactive space. We present an indoor interactive system where a human can customize and interact through a projected screen utilizing the surrounding surfaces. An ultra-wideband (UWB) wireless sensor network was used to assist human-centered interaction design and navigate the self-actuated projector platform. We developed a UWB-based calibration algorithm to facilitate the interaction with the customized projected screens, where a hand-held input device was designed to perform mid-air interactive functions. Sixteen participants were recruited to evaluate the system performance. A prototype level implementation was tested inside a simulated museum environment, where a self-actuated projector provides interactive explanatory content for the on-display artifacts under the user’s command. Our results depict the applicability to designate the interactive screen efficiently indoors and interact with the augmented content with reasonable accuracy and relatively low workload. Our findings also provide valuable user experience information regarding the design of mobile and projection-based augmented reality systems, with the ability to overcome the limitations of other conventional techniques.
Highlights
Humans always seek to be more engaged with their surroundings to have fun, make social bonds, or gain knowledge
The analysis of the collected data alongside participant behavior observations led to the following contributions: 1. We developed an accurate, mobile, user-friendly, and expandable projection-based Augmented reality (AR) interactive system for indoor environments by deploying a UWB wireless sensor network and designing a UWB-driven self-actuated projector platform
This study proposes a novel UWB-driven self-actuated projector platform that supports accurate, mobile, and user-friendly interactive projection-based AR applications
Summary
Humans always seek to be more engaged with their surroundings to have fun, make social bonds, or gain knowledge. Humans spend most of their time inside indoor spaces (e.g., homes, offices, schools, and cultural and entertainment facilities); creating interaction channels inside these places is essential. In [3], better utilization of indoor spaces to create more immersive interaction experiences was proposed utilizing spatial augmented reality (SAR), where projection technology was used for SAR applications to render augmented images over real-world surfaces. A commercially available example of a SAR system is ceilingmounted projectors, which support interactions with projected screens used in schools and companies. This category of interactive projectors needs a special setup to guarantee precise calibration and works by tracking the user’s hand movements [4,5]
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