Body Tracking Orb in TouchDesigner

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Want to create an interactive look without using a body tracking sensor? In this video, we'll show you how to use the latest Nvidia body-tracking CHOP to create an effect where an orb is following you.
You can find more of Crystal's work on Instagram: @crystaljowart
Chapters:
00:00:00 - Creating an Interactive Orb with Body Tracking
00:02:48 - Adding a Blur Effect to the Orb
00:05:30 - Adjusting the Displacement Weight and Other Parameters
00:08:27 - Selecting Wrist Coordinates
00:10:03 - Establishing the Range
00:14:42 - Scaling the Ball
00:16:45 - More TouchDesigner and Immersive Content

[@VeOuria]

Thanks for this! Im just learning but I think the issue with displace having weird border at 17:30 is handled by "extend" option under the displace top. Going to try this out. I wonder how if it works better using the mediapipe gpu body tracking, it seems to output a very precise stick figure in my tests.

[@drtyslzy]

Awesome! Thank you!

[@TheInteractiveImmersiveHQ]

Thanks for watching :)

[@esp6248]

Thanks! General question for this kind of tracking workflow -- when the CHOP loses tracking, how can you set the orb to reset to a given position?

[@TheInteractiveImmersiveHQ]

You can use a Constant CHOP to create a series of channels/values for the "reset" position, and then connect that to the first input of a Replace CHOP. If the tracking CHOP channels are connected to the second input, any time tracking is lost the Constant CHOP values will be output instead. The Constant CHOP also has a helpful _snapshot_ parameter that you can use to auto populate the channel names and values with those that are connected to the first input.

[@yogsototoro]

Спасибо!

[@TheInteractiveImmersiveHQ]

Our pleasure! Thanks for watching :)

[@kallinikos100]

can't be more disappointed...bodytrack node not supported on Mac...

[@TheInteractiveImmersiveHQ]

Yes, sadly the Body Track CHOP is only supported under Microsoft Windows and requires a 20, 30, or 40 series Nvidia RTX GPU 😥