5l1v3r1 / linetrace

Compute paths for line drawings

Goal

It is easy for a human to trace out lines when they look at a handwritten letter or digit. In general, we can easily see how to trace out a line drawing. But can a computer do it? The goal of this project is to get a computer to trace out lines in an image.

What's included

The root of this repository is a Go package containing the current solution.

The solve/ directory contains a command for running the current solution on a random line drawing (e.g. a line drawing drawn by the datadraw utility described below).

The datadraw/ directory is a web application for creating line drawings and saving them as raw JSON. I currently don't use datadraw for the tracing algorithm itself, but I do use it to generate JSON files for use with the solve command. I am mostly keeping it around because it may be relevant to future solutions.

The results/ directory contains some example results from the current solution.

Current solution

The current solution uses a greedy search algorithm. It does not do incredibly well, but it does get fairly reasonable results:

Original	Reconstructed Path