Gregory <nomoregra...@googlemail.com> writes: > Why do you want to see outlines autogenerated from aerial imagery, you > could just look at the aerial imagery?
That's not true. For example, when converting to garmin format, buildings render with very few bits, and let you know developed vs undeveloped areas. Imagery is too big to carry around (and I don't think bing lets people download for offline use), and too detailed to look at while driving. This could be an urban vs rural thing. Cities are basically full of buildings, and any non-building area is notable and worthy of denoting on the map. In semi-rural or rural areas, there are large chunks of just forest (sometimes with roads), and it's there that I find knowing where buildings are to be very useful.
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