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GoTrace

Pure Go implementation of Potrace vectorization library. Supports simple SVG output generation.

Also includes cgo bindings for the original Potrace library.

Original image

Original

Vectorized image

Vectorized

Installation

go get github.com/dennwc/gotrace

Usage

Process image with an alpha channel, generate SVG:

bm := gotrace.NewBitmapFromImage(img, nil)
paths, _ := gotrace.Trace(bm, nil)
gotrace.WriteSvg(file, img.Bounds(), paths, "")

Custom threshold function:

bm := gotrace.NewBitmapFromImage(img, func(x, y int, c color.Color) bool {
    r, g, b, _ := c.RGBA()
    return r + g + b > 128
})
paths, _ := gotrace.Trace(bm, nil)