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Message: <blockquote data-quote="Fast Learner" data-source="post: 709387" data-attributes="member: 649">Step 1 is to  clean up some of the gray. Go to Image=>Adust=>Levels. Click on the white eyedropper and then click on an area of your map that should be white but is instead light gray. You won't want to click on a dark gray here, just a light gray that should be white. Then click on the black eyedropper and click on a part of your image that is very dark gray but should be black. Lastly you can slide the middle slider (below the graph, aka histogram) left and right to try to get nice solid lines without much in the way of excessive dark areas. Click OK.Step 2 is to truly make the layer black and white (it's close now, but there are still grays). Go to Image=>Adjust=>Threshold. Slide the slider left and right until you see the right amount of solidity in your black lines and click OK.Now this layer is completely black and white, making for easy Magic Wand selections. Depending on how things went in steps 1 and 2 you may need to clean up the layer a bit, especially if any of the lines have breaks in them.Note that an alternate way to do this that will probably look better in the end is to skip my Step 2 and just make certain that your Magic Wand has a tolerance of somewhere between 16 and 32. This won't make the layer pure black and white, but it will give you nicer anti-aliased black lines. (I included Step 2 so you'd know how to remove the grays from a black and white image.)</blockquote>

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