Filters --> Enhance --> Sharpen

Things break up after around 70% Any time I resize any image I need to resharpen it.

If enhance/sharpen is grayed out make sure the image is RGB

Image --> Mode --> RGB

Norman Silverstone wrote:

Quite some time ago a method for sharpening was given here and which I have enjoyed using. Unfortunately, I have lost my notes and I would be grateful if the method could be posted again, please.

Norman

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In flickr in the gimp user group there are several sharpening procedure outlined. search there....Great group of people btw.

From: norman@littletank.org
To: Gimp-user@lists.XCF.Berkeley.EDU Date: Mon, 27 Jul 2009 18:47:26 +0100 Subject: [Gimp-user] sharpening

Quite some time ago a method for sharpening was given here and which I have enjoyed using. Unfortunately, I have lost my notes and I would be grateful if the method could be posted again, please.

Norman

Norman Silverstone wrote:

Quite some time ago a method for sharpening was given here and which I have enjoyed using. Unfortunately, I have lost my notes and I would be grateful if the method could be posted again, please.

Norman

Hi,

I like the results of Tools -> Gegl operation -> Unsharp mask at default values :)

G'mic toolbox (http://gmic.sourceforge.net/gimp.shtml) has an unsharp mask with more options too, but I personally prefer the more simple approach of Gegl and have failed to obtain good results with G'mic (the default values produse way to much sharpening)

Greetings, Peter

Norman Silverstone wrote on Mon, Jul 27, 2009 at 06:47:26PM +0100:

Quite some time ago a method for sharpening was given here and which I have enjoyed using. Unfortunately, I have lost my notes and I would be grateful if the method could be posted again, please.

For things like eye popping and enhancement of fur patterns the probably most popular method is unsharp mask. The default values are pretty good (although you might want to overdo the intensity and then use layer opacity to adjust later).

If you get color casts at the edges, decompose into HSV and only sharpen the V (value) channel, then recompose.

If you do partial sharpening in soft selections many people feather the selection at the edges to blend in before copying the section to a new layer for sharpening. Myself, I prefer to sharpen in a non-feathered selection and then I use the erasor with a soft brush to blend in the edges. It's like interactive feathering.

Be warned that the edge softness doesn't always react well with layer opacity adjustment, much less duplication of the sharp parts layer.

Hope this helps.

Martin

On Monday 27 July 2009 23:17:26 Norman Silverstone wrote:

Quite some time ago a method for sharpening was given here and which I have enjoyed using. Unfortunately, I have lost my notes and I would be grateful if the method could be posted again, please.

are you looking for this turorial: "smart sharpening" ? URL: http://gimp.org/tutorials/Smart_Sharpening/

it's found under the GIMP tutorial section, together with tons of other useful tips, at http://gimp.org/tutorials/

phani.

I'm trying to follow this smart sharpening tutorial from version 2.6.7. Several items in the early steps are slightly different - menu steps to decompose vary a bit, for example.

But,everything seems to work for me up to step 7, at which I cannot complete steps beyond. There must be some slight differences between 2.6.7 and the version used in the tutorial, as I cannot seem to get the select-all to show up in the sharpening thumbnail in the layers-channels, etc. dialog.

Any advice?

Thanks.

Caruso

On Monday 27 July 2009 23:17:26 Norman Silverstone wrote:

Quite some time ago a method for sharpening was given here and which I have enjoyed using. Unfortunately, I have lost my notes and I would be grateful if the method could be posted again, please.

are you looking for this turorial: "smart sharpening" ? URL: http://gimp.org/tutorials/Smart_Sharpening/

It is very similar to this, thanks.

it's found under the GIMP tutorial section, together with tons of other useful tips, at http://gimp.org/tutorials/

Very helpful,thanks.

Norman

On Sat, Sep 5, 2009 at 4:54 PM, Carusoswi wrote:

I'm trying to follow this smart sharpening tutorial from version 2.6.7. Several items in the early steps are slightly different - menu steps to decompose vary a bit, for example.

But,everything seems to work for me up to step 7, at which I cannot complete steps beyond.  There must be some slight differences between 2.6.7 and the version used in the tutorial, as I cannot seem to get the select-all to show up in the sharpening thumbnail in the layers-channels, etc. dialog.

"The select-all"? There is no "select-all" in the layers dialog, or the channels dialog.

As far as I can see, step 7 is just saying: * Make the L layer the active layer
* make sure you have a channels dialog up * click on the 'new channel' icon and type in the name 'Sharpening mask'

This does not make too much sense to me. I think what the intent is, is to create a channel from the sharpening mask layer you already generated.
The way I would do that myself (combining the intent of steps 7 and 8), is: * Make the sharpening mask layer active * Edit->Select All (oh -- is this what you are trying to get to show up? It's in the image window, not the channels dialog.) * Edit->Copy
* create the new channel named 'sharpening mask' on the appropriate image. * make the 'sharpening mask' active
* Edit->Paste
* Click on the Anchor button (weirdly, this is in the Layers dialog, not the Channels dialog) to anchor the pasted content

On Saturday 05 September 2009 12:54:32 pm Carusoswi wrote:

I'm trying to follow this smart sharpening tutorial from version

2.6.7.

Several items in the early steps are slightly different - menu steps to decompose vary a bit, for example.

i had the same problem and found that this procedure works for me:

--after decomposing, i go back to the original (or duplicate) image, do the edge, levels, and gaussian blur things; --select all and copy the selection to the clipboard; --then undo everything until the normal color image is visible again;

--now change to the decomposed image; --highlight the "L" layer;
--go to channels and add a new one;
--select the new channel and paste the selection still in the cliboard; --go to layers and anchor the floating selection; --go back to channels and create a selection from the new channel; --switch off visibility of the new channel and deselect it, selecting the original ones;
--go to layers, make sure "L" is selected, and apply unsharp mask; --select colors->components (or whatever it's called)->recompose; --close the (previously) decomposed image and save changes;

now the original image has the smart sharpening applied. if you don't like the result, you can undo and start over.