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Hand Tracking Drawing

Draw in the air with your hand, then view the drawing as a rotatable 3D object. Hand tracking uses the MediaPipe Hand Landmarker. Rendering and the UI use OpenCV.

Image

  • Tag: flugmaschine/hand-tracking-drawing:latest
  • Platform: linux/amd64
  • Base: python:3.12-slim

Run

This is a camera and GUI application. It needs a Linux host with a webcam and an X11 display. It cannot reach the camera or screen on Docker Desktop for macOS or Windows.

xhost +local:docker

docker run --rm \
  --device /dev/video0:/dev/video0 \
  -e DISPLAY=$DISPLAY \
  -v /tmp/.X11-unix:/tmp/.X11-unix \
  --network host \
  flugmaschine/hand-tracking-drawing:latest

Saved drawings go to /app/output inside the container. Mount a folder to keep them:

  -v $(pwd)/output:/app/output

Controls

  • One index finger: draw
  • Index and middle finger: move cursor without drawing
  • Fist and hold: grab the drawing, move to rotate it in 3D
  • Two fists: scale
  • Open palm: release, back to drawing
  • OK sign, hold: clear the canvas
  • Pinky, hold: undo the last stroke
  • Middle finger: shows :(( for a second
  • Both palms waving: say goodbye, closes the app

Keys: S save, C clear, U undo, 1 to 6 color, [ and ] size, SPACE 2D or 3D, R reset view, K skeleton, D debug, H help, Q quit.