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Posted on 18/02/08 09:07:47 AM |
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xsi11598
* Posts: 7 Reply |
Remove jagged edges from scanned text images
Hi there, How to remove jagged edges from scanned text images? http://img2.freeimagehosting.net/image.php?57b0e51637.jpg I have used How to Cheat in Photoshop various instructions on removing jagged edges on my scanned images included refine selection edge and expand the selection by one pixel and then delete – but I have not get any reasonable result. Any help would be greatly appreciated. Thanks. |
Posted on 23/02/08 5:51:19 PM |
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Elliott
Mirror Magician Posts: 91 Reply  |
Re: Remove jagged edges from scanned text images
Hi, following Steve's steps I managed this? Best I could do!!
  _________________ My fake plants died because I did not pretend to water them! |
Posted on 23/02/08 9:21:03 PM |
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David Asch
Tech Support Posts: 1913 Reply  |
Re: Remove jagged edges from scanned text images
Try the neon sign approach, that technique was originally devised for tidying up faxed documents. _________________ If you hold on to the past, sooner or later you'll lose your grip. |
Posted on 25/02/08 07:54:59 AM |
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Steve Caplin
Administrator Posts: 6935 Reply  |
Re: Remove jagged edges from scanned text images
This is a tricky one. My approach would be to enlarge the image by, say, 400%, then use the Gaussian Blur/Levels approach to smooth out the jaggies. Alternatively, try this: Select All, then make a new layer filled with white. Enter QuickMask mode (Q) then Paste; the design will now appear as a selection. Exit QuickMask and use Refine Edges to smooth them. The problem here is that you want hard corners in some places (at intersections, and at the ends of strokes) but not in others (the stepping on diagonal lines). If you follow my approach you'll get good smoothing where you want it, but also where you don't. It sounds awkward, but there's really no way to automate the process perfectly. It's always going to be a trade off between smoothness and indistinct joins and corners. |
Posted on 25/02/08 3:10:08 PM |
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dave.cox
Marquee Master Posts: 518 Reply  |
Re: Remove jagged edges from scanned text images
As you once reminded me Steve, sometimes you just have to do the work of drawing it. I think the best way for something like this might be the old fashioned pen tool.  |
Posted on 25/02/08 4:00:18 PM |
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Steve Caplin
Administrator Posts: 6935 Reply |
Re: Remove jagged edges from scanned text images
Have you just redrawn that, Dave? Amazing job! And what a great tutorial project for using the Pen tool! |
Posted on 25/02/08 4:12:32 PM |
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dave.cox
Marquee Master Posts: 518 Reply |
Re: Remove jagged edges from scanned text images
Yes, it only took about 30 minutes. And since I saved all of the paths, it would be really easy to port into Illustrator, for scaling, printing, or whatever. |
Posted on 25/02/08 5:32:39 PM |
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Steve Caplin
Administrator Posts: 6935 Reply |
Re: Remove jagged edges from scanned text images
Fantastic! |
Posted on 02/03/08 9:52:09 PM |
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kmorgan
* Posts: 8 Reply  |
Re: Remove jagged edges from scanned text images
If you have Illustrator, it's a 2 second operation to bring the image in and use Live Trace. Like this:  |