If you calibrate (georeference) the map in OziExplorer and display the lat/lon grid, you will see that the grid of the image does not match with the grid displayed by OziExplorer. When you view the scanned image, sometimes you can see that lines that should be straight, are not.
There are several causes for distortions such as scanner mechanical, paper deformation and humidity. In a previous blog I wrote about some challenges using historical maps in OziExplorer.Īnother challenge can be image distortions by scanning old paper maps.
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