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 ImageEn Library for Delphi, C++ and .Net
 ImageEn and IEvolution Support Forum
 Micro contrast/ Clarity
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Uwe

284 Posts

Posted - Jul 13 2015 :  14:07:10  Show Profile  Reply
Nigel and Fabrizio,

Any chance that a micro contrast function (what Adobe calls "Clarity") will be implemented in the near future?

https://www.google.com/search?q=micro+contrast+photoshop&ie=utf-8&oe=utf-8


Thanks
-Uwe

xequte

38616 Posts

Posted - Jul 13 2015 :  19:47:26  Show Profile  Reply
Hi Uwe

Do you understand the process? I tried following the steps described as:

  • Import RAW files to Lightroom, adjust exposure and white balance

  • If an image has too broad of dynamic range, I under expose and make a virtual copy that is brighter. I blend the two in PS using layer masks (Google) by hand, using a Wacom Intuous tablet

  • I increase micro contrast on a duplicate layer with the Unsharp Mask Tool, Amount: 20%, Radius: 50px, and decrease layer opacity to taste

  • Topical shadow lighting using curves masks

  • Increased color saturation iwth Velvia action

  • Blemish correction with healing brush



Using similar methods in ImageEn and the image looked like a dog's breakfast. Clearly I missed something...

Nigel
Xequte Software
www.xequte.com
nigel@xequte.com
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Uwe

284 Posts

Posted - Jul 13 2015 :  20:22:03  Show Profile  Reply
Hi Nigel,

Try to import a RAW file into Lightroom, open it in the Develop module, go to Basic -> Presence -> Clarity, and move the slider to see what happens. What the Clarity filter actually does is to increase the apparent sharpness of photos by changing the local contrast in an image. The overall brightness and contrast does not change much, but there is a big difference at the detail level.

Rawtherapee has this implemented since 2011, as far as I know.

https://code.google.com/p/rawtherapee/issues/detail?id=814


-Uwe
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xequte

38616 Posts

Posted - Jul 13 2015 :  22:11:40  Show Profile  Reply
Thanks Uwe,

We'll look into this.

Nigel
Xequte Software
www.xequte.com
nigel@xequte.com
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Uwe

284 Posts

Posted - Jul 14 2015 :  12:44:07  Show Profile  Reply
Great! Thank you, Nigel.

-Uwe

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Uwe

284 Posts

Posted - Jul 20 2015 :  14:36:56  Show Profile  Reply
Nigel, here's some additional information with code for microcontrast enhancement and edge sharpening without halos. Scroll down a little for the source code.

EDIT:

Go to

https://archive.org/web/

and search for

http://www.rawness.es/sharpening/?lang=en


-Uwe
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xequte

38616 Posts

Posted - Sep 12 2016 :  20:04:07  Show Profile  Reply
Hi Uwe

A very similar effect is already available by using unsharp mask with a very large Radius and low Amount. For example:

imageenview1.proc.UnsharpMask( 15, 0.5 );

Nigel
Xequte Software
www.xequte.com
nigel@xequte.com
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nwscomps

185 Posts

Posted - Sep 14 2016 :  06:39:04  Show Profile  Reply
Hello Uwe,
ImageEn has also Wallis filter (you can make a search in internet to know more about it), which could be used for such tasks. I have recently discovered it.

Francesco Savastano
Nwscomps.com
Add-ons for the ImageEn Library
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Uwe

284 Posts

Posted - Sep 17 2016 :  20:11:16  Show Profile  Reply
Thanks, guys. Much appreciated.

-Uwe
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