Quote:Fror hazy memory, there is a thing called "center trace" somewhere (Inkscape plugin?). I assume Rich will chime in for this.
Broken in Inkscape 1.x which has moved on to python 3. Get an old version (0.9x) of Inkscape + Autotrace
For Gimp:
Centerline-trace. In this case probably not worth the effort. Assuming the wall is easily extracted on its own layer, those corner rectangles (wall pillars ?) (1) create spikes in the trace. I can smooth with a small gaussian blur followed by threshold (2). Then run the autotrace plugin. Not a wonderful result (3)
The plugin is here: http://gimpchat.com/viewtopic.php?f=9&t=17485 Also the autotrace executable https://github.com/autotrace/autotrace/r...0200219.65