Combining skin colour detection and motion detection technique,
the proposed VBI system could sense users’ hand movements and interpret their actions to the corresponding system events.
Users could interact with virtual objects in the game session. A projector and a projection screen are employed when users operate with the VBI system.
All the images shown on the computer screen, while the courseware is playing,
would be projected onto the projection screen. By standing in front of the projection screen,
users can trigger, grasp, drag, or match the virtual objects (buttons) according to their hand movements.
The children performed the tasks in a bigger room in their school when using the VBI system.
In contrast with standing in front the projection screen, the children sat in front of a computer and performed
the tasks using the TI system.
Questionnaires were distributed to survey the experiences and feelings of the participants upon completion of the activities.