Some of the previous discussion isn't great (squabbling about dupes, not being able to download the pdf). A common comment was "hasn't this been done before". Many existing tools output higher-res bitmaps, this tool outputs vector images. They did run comparisons to a variety of algorithms, including potrace, which also generates vectors.
When we get stories like this that get repeated multiple times on Hacker News (a few others spring to mind recently) it's a minor annoyance if you're an ardent HN reader but a significant indicator of what HN readers really find interesting on the whole since it's getting voted up each time by a different subset of users who hadn't seen it before.
Things involving novel presentations of algorithms and well presented 'undry' academic papers seem to do very well in this regard..
Some of the previous discussion isn't great (squabbling about dupes, not being able to download the pdf). A common comment was "hasn't this been done before". Many existing tools output higher-res bitmaps, this tool outputs vector images. They did run comparisons to a variety of algorithms, including potrace, which also generates vectors.