Produce watertight polygonal vector maps by tracing raster images.
THIS IS NOT A GIS TOOL (the output is not georeferenced)
DO NOT USE THIS TOOL TO CIRCUMVENT COPYRIGHT RESTRICTIONS ON EXISTING MAPS (you will be judged in the next life)
DO NOT USE THIS TOOL ON MULTI-MEGAPIXEL IMAGES (because loops are really slow in Python)
On the other hand, it might come in handy to generate crisp display images for presentations/articles from raster images you created yourself.
- Python 2 or 3
- Numpy 1.10 or higher
- Scipy 0.17 or higher
The files in the
images directory are licensed as follows:
Maps created by
maptrace.py from these input images (including the respective outputs in the
examples directory) shall be considered derivative works for copyright purposes.
The images in the
examples directory were created by running the following commands:
python maptrace.py -c images/pa-2012-pres.png -f open:cross,1 -n2 python maptrace.py images/pa-counties.png -m 1000 -e1.42 -n4 -b4 python maptrace.py -c images/birds-head.png -C8 -m40 -n8 -q5 -s8 -b16 -f dilate:box,2
(The last command might take a few minutes.)
maptrace.py program itself is provided under the MIT license.