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Posts posted by CreepinJesus
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Thanks, that's got it off to a good start. The edges are still a bit mixed and posterize isn't quite doing what I want it to, but using the magic wand selection tool and then filling selected areas is almost doing the trick.
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I'm looking for some help in creating an image for use as a raster in a GIS application.
I have some land use survey maps from the 1903s and I need to have a raster of the areas of different land uses (which I can later polygonise, etc.). I'm trying to avoid having to draw all the polygons out manually, so I thought there may be a way to create these rasters from the original map scans.
Attached are two files: 'Original' shows the style of the original maps, and 'Output' shows something along the lines of what I'm trying to achieve, only I need it more 'in focus' and using distinct colours only (maximum of 6, if possible, as there are 6 different classes on the original maps).
Does anyone know if this can be done in Paint.net? I have access to Photoshop if there's something I can use in that.
Thanks.
Converting a map to coloured areas
in Paint.NET Discussion and Questions
Posted
After experimenting with the suggestions made above by Ego Eram Reputo, I've got pretty close to what I need now (see attachment - note, it's not the same area as the first post).
What I've done is:
There are some small parts that are still slightly off, so I'm still adjusting certain values here and there. All in all, though, it should be a lot quicker than manually 'repainting' the whole map (and the other 10!).