![]() ![]() So I made a simple spreadsheet to “muck around with the pixel values” (I like the phrase!) and calculate the values needed for a worldfile for the 4800 pixel image. However, I found the same as Dan, that the Shape2Earth extension for MapWindow only correctly references the basic 1000 pixel image. Looked at another way, a saved image covers almost 5 km x 4 km at 1 metre resolution. 18 megapixel image rather than a 1 MP image. In full screen mode, I get 3765 pixels vertically, but I guess it would go up to 4800 x 4800 pixels if I stretched GE over two monitors or had a particularly hi-res display. The vertical image size depends on the window size and whether the sidebar view is on. ![]() Just tried GE Pro at last – it’s great, in that it saves images at up to 4800 pixels horizontally. In particular, you have to leave the Google logo and copyright notices unaltered to maintain proper attribution. Imagery in Google Earth is copyrighted, and using it for any other purpose than viewing in Google Earth falls under the restrictions of copyright law and fair use.This process doesn’t correct for any such deviation. Coordinates in Google Earth can be off from the true coordinates even for small areas see this post for more info.The larger the area covered, the greater the deviation between the true and georeferenced coordinates. For views that are zoomed to view a relatively small area, the area is essentially a flat plane, and the georeferenced image shouldn’t have a large deviation from the true coordinates. The view in Google Earth is orthographic, i.e.If there’s a problem, try changing the extension of the worldfile from *.jpgw to *.jgw. You now have the Google Earth image with the georeferencing data contained in the worldfile (geographic coordinates, WGS84 datum), which most GIS programs can open and read successfully. This overwrites the previous black-and-white image with a color one of exactly the same area. Go back to Google Earth, and without moving or changing the view in any way, save the current view (File => Save => Save Image) with the same name and location as the image in step 5. This will save a black-and-white jpg image of the current view in the Google Earth window, along with a worldfile (*.jpgw) containing the georeferencing information.Ħ. Save the image with the desired name as a JPG file. If you haven’t already oriented the image with north at the top and zero tilt, you will be prompted to do so.ĥ. From the Shape2Earth menu in MapWindow, select “Get Image from GE”, and click on the “Capture Image” button. ![]() Open MapWindow if you haven’t already activated the Shape2Earth plugin, do so from the plugins menu.Ĥ. Also double-click on the “0 tilt” icon (the box with the “X” in it on the left in the tilt adjustor) to set the tilt angle to zero.ģ. Double-click on the “N” in the compass at the upper right to orient north to the top of the screen. Open Google Earth, and zoom in to the area of interest.Ģ. Shape2Earth’s main function is converting shapefiles to Google Earth KML files, and while the full version costs $29.95, it will work in unregistered demo mode for up to 500 shapefile vertices, and here for georeferencing Google Earth imagery.ġ. You will need to have installed Google Earth (of course), the free GIS program MapWindow, and the Shape2Earth plugin for MapWindow. There are free image georeferencing options out there, and I’ll cover some of those soon, but that’s not necessary in this case – there’s a simpler way to get the georeferencing data for an image exported from Google Earth. But in order to use this image in a GIS program, it has to be georeferenced, i.e. You can save the displayed view in Google Earth by using the File=> Save => Save Image command (Ctrl-Alt-S is the shortcut), which saves the contents of the view window as a JPG file. I’d welcome opinions from those knowledgeable about the rights and limitations of “fair use”, and will pull the post if an expert on these issues says that using Google Earth imagery as described below doesn’t constitute “fair use”. But I acknowledge that I could very well be wrong about this falling under the umbrella of “fair use” protection, in which case it would be illegal. ![]() I feel that this use of Google Earth imagery for personal and non-commercial uses falls under the guidelines of “fair use”, and I explain why here. More specifically, words like “theft”, “stealing” and “dirty” have been used to describe this. They say use of Google Earth imagery in the manner outlined here is inappropriate, an illegal violation of the Google Earth EULA/TOS. This post has gotten a very strong reaction from many people, mostly negative. ![]()
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