ABSTRACT
Educational robots could be powered by connected cables running to external power supplies, but in most cases this is cumbersome, impractical, and maybe unsafe. Speech is one of the most natural and easiest forms of communication for humans. Communicating with a machine by speaking to it in one's native language is intuitive and requires little to no learning. Computer vision technologies have been around for a number of decades, relying mostly on image processing algorithms. In the past decade, with the advent of digital camera technologies and improved processing power, computer vision has become one of the essential input sources in robots. Robots operating in the real world in a changing environment are likely to encounter numerous obstacles and objects of interest. Robots often have speakers or buzzers to create auditory signals. This can be useful in communicating with the student, in particular if the robot is using speech.
