This is another simple example of what can be done with machine vision. The program checks the keys for a telephone. Keep in mind that this is only an example for a specific type of task. The program can be modified for use with any type of keys e.g. keyboard keys.
(The picture quality of the animation is 'poor', because we tried to reduce the download time of the page. The pictures below have a better quality)

The programm also checks:

• The color of the keys (see picture below).

  

  
  

• The right position of the keys (see pictures below).

  

  

  
  

• Whether the key exists (see picture below).

  

The pictures were taken with the camera Kodak MegaPlus ES 1.0.