α=1.7 · ε=2px · dθ=0.35° · RK4
no strokes
pen · pinch or scroll to zoom · drag to pan
clean denoised
δ px off no resampling · zoom-agnostic pixel spacing
Head cut 2 ■ red dots = discarded
Tail cut 2 ■ amber = thinned pts
draw a stroke to analyse
Δθ(s) s/L
κ(s) fp s/L
v(s) · speed [px/s] s/L