A spatial augmented reality based circuit experiment and comparative study with the conventional one

Abstract

How to intuitively illustrate phenomena while retaining good operation experiences is a key issue in experimental learning. Virtual experiments with desktop environments, handheld devices, or headsets can show invisible phenomena for students. However, they are either visuo-tactile inconsistent in space or with heavy physical burdens, causing bad experiences. A spatial augmented reality (SAR) based circuit experiment is developed. It allows students to interact with 3D (three dimensional) printed tangible objects without wearing any devices, having low physical burdens. Objects' poses are tracked using Microsoft Azure Kinect and inertial measurement unit. Virtual phenomena are projected onto the tangible objects and tabletop accordingly. Physical input and virtual output space are completely fused from students' view. It also offers efficient operation manners to students. A questionnaire comparing user experiences between the SAR and conventional experiment reveals that the former has a better learning experience.

Research on interactive augmented reality-based solid geometry teaching assistant system

“…Some of them only realize the recognition, tracking and rendering of three-dimensional geometry, but cannot interact with it, which greatly reduces the learning effect [2,3]. Some of them need to use additional equipment, such as data gloves, VR glasses or projectors to achieve interactive effects, but this will increase the physical and psychological burden on students and affect the learning experience [4,5,6]. Some of them are app-based and require downloading application software to use, which is inconvenient [7].…”