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 Post subject: Highpass sharpening by skynet
PostPosted: Fri Aug 26, 2011 2:54 pm  (#1) 
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I really like this script. It's smoother and kinder than Unsharp mask.

http://registry.gimp.org/node/25527

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 Post subject: Re: Highpass sharpening by skynet
PostPosted: Fri Aug 26, 2011 3:02 pm  (#2) 
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I love this new sharpening technique it really preserves the detail and doesn't blow out the image edges. :)
Glad someone finally made it into a filter for Gimp.
I set the radius to 50 for a 2500x1900 pixel photo and it worked excellent.

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 Post subject: Re: Highpass sharpening by skynet
PostPosted: Fri Aug 26, 2011 3:41 pm  (#3) 
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That's not bad. I've never been a fan of unsharp mask. I've had pretty good results with the plain ol' sharpen filter combined with brightness/contrast adjustment.

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 Post subject: Re: Highpass sharpening by skynet
PostPosted: Fri Aug 26, 2011 4:13 pm  (#4) 
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I always just duplicated the image and desaturated it ticking luminosity, and then used unsharp mask at .50 for amount and about 5.0 for radius.(0 for threshhold) . then set the top layer to overlay.Then i would merge the two layers.
Here are my results..
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High pass is definitely much better than mine. :)

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 Post subject: Re: Highpass sharpening by skynet
PostPosted: Fri Aug 26, 2011 10:23 pm  (#5) 
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Original image here.

This image is a combo of dd's plug-in and skynet's script. The sky was very over exposed so I selected the white sky with the Fuzzy select tool, grew the selection by 1, extracted the luminance and used a blue gradient on the chroma layer.

Then I used skynet's highpass sharpening script on it.

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 Post subject: Re: Highpass sharpening by skynet
PostPosted: Fri Aug 26, 2011 11:48 pm  (#6) 
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What a beautiful place O. :)

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 Post subject: Re: Highpass sharpening by skynet
PostPosted: Sat Aug 27, 2011 1:26 am  (#7) 
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I don't know where that place is, Rod. It's from a PhotoShop tutorial about fixing an overexposed sky. :mrgreen:

By the way, the skynet based his Highpass sharpening filter on Episode 164 of Meet the Gimp.
http://meetthegimp.org/episode-164-high ... harpening/

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