Reproduce “Windfoil: Closed-Form Coverage for Real-Time and Differentiable Vector Graphics” on OpenResearch
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About this paper
Matt DesLauriers
Windfoil integrates box-filtered winding number for quadratic Bézier contours in closed form, using the same coverage calculation for display and optimization. Positive filter sizes make coverage continuous as curves move, enabling gradients for fitting. On Färlev, at 512 × 288 with 4,096 shapes and 800 steps, it reached 26.77 dB in 10.1 seconds; this is a representative result, and fill-rule errors can occur at self-crossings.
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