Building a drum machine with low-cost tangible interface (d-touch drum machine)

Step 11 Start the d-touch drum machine application

Start the d-touch drum macine application.
On OS X a configuration dialogue for the camera will pop up, please select the appropriate options or leave the defaults, and click on OK.

You should have a window showing you the view of the webcam (in grayscale).
Adjust the paper and the webcam so that the four corners of the board are in view.