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Complete newbie question here... I have a black-and-white diagram (floor plans) scanned from a printout. It's mostly OK, but some of the lines are visibly faded or blurred in places, so it "looks" scanned. Is there an easy way to make them into clear, sharp lines?

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What software are you using? What have you tried? – Scott Jun 9 '12 at 9:12
I've tried various options in Paint.NET so far without any success. I could download any free software that would do the job. Could probably get access to Photoshop as well (not sure which version), but I wouldn't even know where to start with that. – EMP Jun 9 '12 at 10:13
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In Photoshop you could try Filters > Sharpen > Sharpen Edges. Along with that, to make it a little more clear, go to Image > Adjustments > Levels.. and play with that to remove blurry edges and darkening the sharp lines. – poepje Jun 11 '12 at 8:45
One thing though; you say 'black-and-white diagram (floor plan)' but I suppose you meant something like 'blueprint' (instead of diagram)? Otherwise I might be understanding the question wrong. – poepje Jun 11 '12 at 8:46
Can you post a sample image? – e100 Jun 11 '12 at 11:18
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