Pencil Tracking Prototype v4.0

Model: not loaded
This is the whiteboard. Ink lands here, decoupled from the camera view. Point with your index finger (other fingers relaxed/curled) to draw. Open your palm (all fingers extended) to erase around your hand. Pick tool/size from the toolbar in the panel — that's the only way to change them now.
Camera (drag me)-
Point at each glowing target and hold still for ~1s
Status idle

Tool & size

Size 4px

Board calibration

Maps your pointer onto the whiteboard plane so drawing stays accurate off-center or at an angle. Optional — works uncalibrated too.

Calibrationnot calibrated

Physical Pen Mode

Experimental: bias tracking toward a real held pencil/pen instead of the bare fingertip. May misfire in cluttered or low-contrast scenes — see README.

Advanced / debug
Handnone
Gesturehover
Hand shape-
Tracking sourcefingertip
Shaft confidence-
HSV pen calibrationnot calibrated
FPS-
Stroke count0

Stroke event stream

Waiting for camera…