How Raster-to-Vector Engines Work
Understanding thresholding, contours, and Bézier fitting — how does image vectorization work?
2026-06-01
Most engines binarize the image (Otsu or similar), find contours, simplify polygons, then fit curves.
Logo-quality systems add sub-pixel edge refinement, corner detection, and hole handling (nested contours with even-odd rules).
VectorHit v4 follows that pipeline for flat marks — not for photos. Knowing the limits helps you choose PNG vs SVG and set realistic expectations.