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I have seen a lot of very different tutorials about how to remove blue lines from a scanned drawing. So I ask myself what is the best way in term of simplicity and quality to do this in Photoshop (CS3 and above).

And also, is the choice of the blue color really the best, or there are other better colors in order to obtain a clean final drawing with the sole black lines?

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Maybe this will work for you?… – Kees Sonnema Jun 21 '13 at 10:32
@Joonas add that as an answer. – Darth_Vader Jun 21 '13 at 14:59

Remove blue lines in Photoshop: follow these steps.
enter image description here

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If that image came from… and you're not oomizuao, you should probably credit your source – user568458 Jun 21 '13 at 15:20

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