Design and realization of Computer Aided Instruction platform based on Augmented Reality

This article introduces a Computer Aided Instruction platform based on Augmented Reality. The platform can superimpose virtual objects and virtual characters on the classroom. Teachers can interact with the virtual objects and virtual characters by presenting and moving special vision markers. In the platform, machine vision technology is used to implement human-computer seamless interaction, Virtual Reality Modeling Language is used to describe the virtual scene, Artoolkit library is used to acquire video stream and calibrate coordinate, OpenGL library is used to render the virtual scene. The platform has been applied in teaching process and achieved good results.