Re: [Gimp-user] enhancing letters in GIMP

[Xiella Harksell]

On 12 December 2011 09:53, Xiella Harksell xie...@gmail.com wrote:

 On 12 December 2011 09:07, Arbol One arbol...@gmail.com wrote:

 I have a png file that has some letters, the letters are blurry after the
 scanning and I would like to enhance the tone of the letters, the letters
 are black and the document is in many colours but black. How can I isolate
 the black, thus the letters, from all the other colours and then enhance
 the colour black so that the letters are thick and solid. 

 ** **

 ** **

 Thanks in advance.



 If you scanned a black and white document in colour and don't mind losing
 all the colour, a quick fix is turning the png to Grayscale and then
 increasing Brightness/Contrast to your liking.

 If you have colours other than black that you'd rather not grayscale:
 - use the rectangle tool to select the text,
 - reduce Saturation (several tools in the Colour menu do this) until it's
 all some shade of grey rather than colour,
 - then fiddle with Brightness/Contrast until the black is an acceptable
 black and the white is the appropriate white to match the rest of the
 document.

 not sure if that

 was what you were looking for.
(sorry accidentally sent.)

Xiella
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Re: [Gimp-user] enhancing letters in GIMP

[Mikel Garai]

As far as I can tell you are trying to maintain most of the information 
of the scanned image, just enhance the letters.


First, without seeing the actual image I'm not sure if this can help 
you, but maybe it will give you some ideas.


What I would do is (I'm writing this just remembering, some options may 
be named differently):


   * Duplicate the layer
   * Play with the level tool (in the new layer) until your text is all
 clear (no matter the images)
 o For this you can press the left mouse button on any point of
   the image to see what part or the historigram belongs to
   what part of the image, so you can make the letters black
   (down) and the rest white (up)
 o You probably want to change the level from smooth to
   freehand
   * Add layer mask - Grayscale copy of the image
   * Invert the mask
   * Paly with the level tool (but now in the recently created mask)
 until you are happy with the result
   * Export/Save or merge layers and there you have

Also instead of playing with the levels tool you can just use posterize, 
but I usually don't like the hard edges that you get with this.


Hope that the explanation was not too bad and can help you at least 
something and good luck!


 - mIKEL

On 11/12/11 21:07, Arbol One wrote:


I have a png file that has some letters, the letters are blurry after 
the scanning and I would like to enhance the tone of the letters, the 
letters are black and the document is in many colours but black. How 
can I isolate the black, thus the letters, from all the other colours 
and then enhance the colourblack so that the letters are thick and solid.


Thanks in advance.


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