Here’s what it does:

Makes the point nicely that symbols and spaces can intertwine.

Using opencv blob detection, the regularity, direction and area of the shapes map to envelope modulation, resonance and pitch. The drawing is then sequenced into a melody using the minimum spanning tree (from the boost library) of the shape centroids, where distance maps to inter-onset interval.

It also has a mode for projecting the red circles and highlights back on the drawing surface which worked well.

This is only the second thing I’ve made with openframeworks, and while I don’t really get on with the codeblocks editor recommended for linux, I’m impressed with how accessible it makes opencv and all that.

Update: sourcecode