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This is an old revision of the document!
This feature enables calibrating an image of map and placing it over the active map. For example when you go to the ZOO or a park simply take a picture of its detailed plan displayed on a board at the entrance. After that you can calibrate the photo according to your background map a use it for your further navigation. This option is available only to Locus Map Pro users.
We recommend to copy the image from your PC/scanner/internet or a DSLR camera to your Dropbox or the phone photo folder (DCIM) before selecting it to get better results
If you have chosen a huge picture, it is highly recommended to divide the map image into many small maps (tiles) bundled into one file.
Your calibrated map appears now as an overlay and can be (de)selected in Data manager > Items
You can change opacity of the calibrated map by selecting it in the side item browser and moving the opacity slider: