As part of a research project, I need to create essentially a map of a suburb that shows all the areas covered by buildings, trees, grass, roads, etc. I have looked around for available datasets but cannot find any for this suburb (Redbank Plains, QLD, Aus) which are up to date, fine resolution, and cheap/free. What I've managed to come up with is to take an image of the location from Google Earth, import it to ArcGIS, and run an image classification wizard on it. It seems to be mostly working, except where the colour of roofs is very similar to that of roads, which means they keep getting classified as one or the other. I have tried adding more samples and it is sort of improving but doesn't really solve the issue. I've attached images of what I've got so far.
Does anyone have any advice on how to improve this further, or a better method of achieving this? I'm pretty new to ArcGIS so any help would be appreciated.
