What is Vectorization?
Also known as: Raster-to-vector, Tracing
The process of converting a raster (pixel-based) image into a scalable vector (path-based) image. Used in textile design to prepare prints for screen printing, embroidery, and CAD systems.
How does vectorization convert pixels to paths?
Vectorization (also called tracing) converts pixel data into mathematical paths — Bezier curves, polygons, and shapes that can be scaled to any size without quality loss. Textile applications include: (1) screen printing — vector edges produce cleaner halftone screens than raster edges; (2) embroidery — embroidery machines need vector path data, not pixel data, to drive stitch direction; (3) CAD systems — Pointcarre, NedGraphics Easyweave, and similar industrial textile tools work in vector format; (4) signage and large-format printing — vectors scale to billboard size without pixelation. Two approaches dominate: colour-layer tracing, which suits high-colour images, and edge tracing, which suits line art. Modern AI-augmented vectorizers add segmentation and edge-cleaning passes that produce cleaner output than the raw algorithms. Vectorization has become a standard step for designs intended for plotter cutting, embroidery, laser engraving, or large-format printing where vector scaling beats raster resampling. Modern AI-assisted vectorizers handle photographic and painterly source imagery far better than the early-2000s tools, opening vectorization to designs that previously had to remain raster.
When is a design worth vectorizing?
A 1024×1024 raster floral motif is vectorized to SVG. Result: 47 paths, 312 anchor points, total file size 38 KB (vs. 4 MB for the original PNG). The SVG can scale to any size, supports per-path color editing, and exports cleanly to embroidery DST format.