In the dialogue box that appears, enter a descriptive name in the Name field. With the new folder selected, click the Add Image Overlay tool found in the menu bar. In Places in the table of contents (left pane) in Google Earth interface, right-click My Places and select Add > Folder. Open Google Earth and zoom into the rough location of the antique map. For example, is it a neighbourhood in a city, or an entire country, or somewhere in between? You can use an Ontario road map as an example for this exercise Save a select and save a scanned and digitized map to your local computer drive and familiarize yourself with its geographical location. Google Earth will be used as a backdrop to overlay and digitize historical maps. Requirements: Google Earth Desktop installed and an image file (e.g.: JPEG, TIFF) of an historical map or an aerial image. PDF version: Georeferencing and digitizing scanned maps in Google Earth Georeferencing and digitizing scanned maps in Google Earth Relive the memories in our liveblog.This help guide outlines the process to georeference (geographically place on the surface of the earth) a scanned map or aerial image and digitize features from it in Google Earth. We prodded a bit to see if 2.x devices would be in the mix, and all we got was a non-confirming reply about an 'assumption' that if Google Maps Navigation is supported, offline and 3D would be as well. Update: We just followed up with Peter Birch following the keynote regarding version compatibility for offline and 3D Maps, and were told that Google 'has nothing to announce at this time,' but will do so in the coming weeks. Just how deep this rabbit hole goes is an unknown right now, but it certainly ups the ante for Apple's rumored giant iOS 6 Maps revamp and the 3D mapping it might be using from C3 Technologies. The new fully textured, fully modeled imagery is coming both to Android and iOS in the 'coming weeks,' and Google even made a point of showing the update running on an iPad. In some areas, such as San Francisco, it models every building and delves down into the trees.

Google is keeping the string of Maps launches going - it's just rolling out very, very detailed 3D maps for technology like Google Earth, using a 'new process' to get extra depth.

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