Script for Cleaning up Hand-Drawn Scans

tstandiford · **Posted:** Thu Sep 15, 2011 11:08 am **(#1)**

Pretty cool!

http://keytaps.wordpress.com/2010/03/09 ... rd-images/

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4050

Looking inside the script, because there are no user settings, and it keeps leaving all the red artifacts behind. Otherwise, a nice script.

tstandiford · **Posted:** Thu Sep 15, 2011 11:59 am **(#3)**

I believe it was originally made for a whiteboard. If anything it should help speed up the process a bit.

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4050

I removed despeckle from the script and NOW I get the results I wanted. I actually read his blog where he mentions removing despeckle, so I opted to try that first, and BINGO!

Rod · **Joined:** May 16, 2010 **Posts:** 16009

Mahvin can you zip and attach a version of your script please?

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4050

Sure..I just disabled despeckle. Users can opt to turn it back on by removing the ; in front of it.

Rod · **Joined:** May 16, 2010 **Posts:** 16009

Thanks Mahvin i removed my attachment.

RobA · **Joined:** Jul 14, 2010 **Posts:** 697

Here is the method I use - it is manual because of the first step:

1) Duplicate the layer and perform a Dilate filter, until the scan noise is all gone.
2) Gaussian Blur this duplicated layer with a large radius.
3) Effectively you want to subtract this duplicated layer from the original, do this by setting the layer Mode to Grain Extract, then Flatten.
4) The result will have an even grey background, adjust the Levels to make it white again.

-Rob A>

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4050

Why couldn't that be done in a script? Because the number of dilation processes most likely will exceed one run.