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Chris Tsang
2023-09-23 11:45:36 +01:00
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LICENSE
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Copyright (c) 2022 Tsang Hao Fung
Copyright (c) 2023 Tsang Hao Fung
Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated

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README.md
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visioncortex VTracer is an open source software to convert raster images (like jpg & png) into vector graphics (svg). It can vectorize graphics and photographs and trace the curves to output compact vector files.
Comparing to [Potrace](http://potrace.sourceforge.net/) which only accept binarized inputs (Black & White pixmap), VTracer has an image processing pipeline which can handle colored high resolution scans.
Comparing to [Potrace](http://potrace.sourceforge.net/) which only accept binarized inputs (Black & White pixmap), VTracer has an image processing pipeline which can handle colored high resolution scans. tl;dr: Potrace uses a `O(n^2)` fitting algorithm, whereas `vtracer` is entirely `O(n)`.
Comparing to Adobe Illustrator's [Image Trace](https://helpx.adobe.com/illustrator/using/image-trace.html), VTracer's output is much more compact (less shapes) as we adopt a stacking strategy and avoid producing shapes with holes.
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## Anecdotes
> The following content is an excerpt from my [unpublished](https://github.com/sponsors/tyt2y3) [memoir](https://github.com/visioncortex/memoir).
### How / when did VTracer come about?
At my teenage, two open source projects in the vector graphics space inspired me the most: Potrace and Anti-Grain Geometry (AGG).
Many years later, in 2020, I was developing a video processing engine. And it became evident that it requires way more investment to be commercially viable. So before abandoning the project, I wanted to publish *something* as open-source for posterity. At that time, I already developed a prototype vector graphics tracer. It can convert high-resolution scans of hand-drawn blueprints into vectors. But it can only process black and white images, and can only output polygons, not splines.
The plan was to fully develop the vectorizer: to handle color images and output splines. I recruited a very talented intern, [Sanford](@shpun817), to work on VTracer. I grafted the frontend of the video processing engine - the ["The Clustering Algorithm"](https://www.visioncortex.org/impression-docs#the-clustering-algorithm) as the pre-processor.
Three months later, we published the first version on Reddit. Out of my surprise, the response of such an underwhelming project was overwhelming.
## What's next?
There are several things in my mind:

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RELEASES.md
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# Version 0.6.0 (2023-09-08)
- Python bindings
# Version 0.5.0 (2022-10-09)
- Handle transparent png images
# Version 0.4.0 (2021-07-23)
- SVG path string numeric precision
# Version 0.3.0 (2021-01-24)
- Added cutout mode
# Version 0.2.0 (2020-11-15)
- Use relative & closed paths
# Version 0.1.1 (2020-11-01)
- SVG namespace
# Version 0.1.0 (2020-10-31)
- Initial release

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Copyright (c) 2022 Tsang Hao Fung
Copyright (c) 2023 Tsang Hao Fung
Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated