A calibration method based on barycentric coordinates for multi-touch systems

In this post we will touch upon the calibration component for multi-touch systems. By the end of this post we will implement a calibration widget that is integrated with our tracker modules, but before we do that we'll discuss the mathematics behind one method for mapping camera space to screen space. Below is a screen capture of our calibration widget awaiting input. Our calibration implementation will divide each quad in the above image into two triangles, an upper left and a lower right Read more [...]