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Gimp effect (Value propagate) in ImageMagick

Posted: 2016-10-27T10:58:54-07:00
by rcosta
Hello,

First sorry for my english, I'm portuguese.

I'm trying to apply an effect to an image in order to highlight a digital signature.

Already managed to achieve some results but still not what I wanted.

I'm doing the following treatment:

Code: Select all

convert teste.png -fuzz 10% -fill white -opaque '#C5E2FF' teste.png; 
mogrify -monochrome  teste.png
convert teste.png -morphology close diamond teste.png
mogrify -unsharp 0x3 teste.png


this is what I can achieve

Imagescreen capture windows 7

but if i use gimp and the filter "value propagate" i can enlarge the black area of signature like this

Imageupload jpg

I've looked at all the available documentation and can not find a way to enlarge the black areas.

How can I achieve this effect using ImageMagick?

Thank you.

Re: Gimp effect (Value propagate) in ImageMagick

Posted: 2016-10-27T11:22:13-07:00
by fmw42
Have you tried using diamond:2 or octagon:1 or octagon:2?