Google Maps is a mosaics of many different resolutions. Each zoom level is pieced together from the best imagry available for each location. Different imagery is chosen for different levels in cases where a larger more consistent photograph can be used instead of joining lots of smaller but high resolution imagery (because different images often have slightly different colouring - taken at a different time of day etc).
I believe Google uses a 15m per pixel base resolution - that is has globally, but then uses higher resolution imagery on a more selective basis, down to about 50cm-25cm per pixel. But higher res is even used in places. Such high res imagery usually comes from planes rather than satellites. Google Earth on the other hand joins all photos to make one really high resolution image, that is just continuously zoomable until run out of resolution in a given area. (which is why the joins between different images are more visible) Hope that helps! 2010/1/8 enrico <[email protected]>: > Hi everyone! > > For a project, I'm interested to know how is management the maps in > Google Maps. In particular, when making aerial photographs, are made > at different resolution level? Or is there an only resolution level? > Finally, at which resolution level are made the aerial photographs? > > Excuse my English! > Enrico > > -- > You received this message because you are subscribed to the Google Groups > "Google Maps API" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/google-maps-api?hl=en. > > > > -- Barry - www.nearby.org.uk - www.geograph.org.uk -
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