Convert Blob Tracker into Data

Beginners
1

I have Blob Tracker in TouchDesigner that will track two feet (using a webcam) and now I want to turn foot movements into “actions” (i.e. turn the foot movement into data). The ideas of motion that can be converted from “dance” to data are below but I’m having trouble finding out the nodes that will help me execute on this:

  • Position: where feet are related in the frame
  • Velocity/Speed: how fast the feet are moving
  • Lift: Do they feel lift/leave the ground
  • Separation: distance between the two feet.

I need to make each of these into data that can modulate/impact an abstract visualizations in the next stage of this project.

Any ideas to get me unstuck?

2

Hi @andi.mc

check out the OP Snippets for the Blob Track TOP. There you can see that information about position and size of detected blobs can be retrieved via a Info DAT.

Regarding Lift: that’s tricky as you are dealing with strictly 2D information.

cheers
Markus

3

Thank you! I had not yet discovered OP Snippets! And I hadn’t thought about the 2-D-ification that comes with blob tracking so I’ll scrap lift for now!