User Tools

Site Tools


This is an old revision of the document!

On-board Map Calibrator


On-board calibrator enables calibrating an image and placing it over the 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.

1. Get a map picture

  • open the function in Menu > More functions > On-board Map Calibrator, a dialog appears
  • tap Take to take a photo with you phone camera - the more quality camera, the better
  • or Select to chooose the photo from your device photo folder.

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

2. Calibrate the map picture

  • tap Add and choose a distinct point (a hill summit, crossroads etc.) on your picture
  • tap in Map coordinates menu and choose the same point on your background map
  • repeat this procedure 4 times - try to select points making a square. You can edit their positions by tapping or remove them.

3. Generate your calibrated map

  • when you are ready with your four points the status line turns green and the Compute button activates
  • calibration points overview appears - indicates their deviation. When it is not large you can name the new map and proceed to its rendering

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.

4. Use the calibrated map

Your calibrated map appears now as an overlay and can be (de)selected in Data manager > Items

manual/user_guide/maps_tools/calibrator.1446819923.txt.gz · Last modified: 2015/11/06 14:25 (external edit)