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Participating Frequently
August 10, 2025
Question

The "Discer"

  • August 10, 2025
  • 2 replies
  • 115 views

Imagine you're on a farm - looking at a plowed field.

 

There are large continuous furrows, side-by-side, which have been flipped over.

 

The composition of the soils in this field - could vary > from rich black dirt, to gravelly, to a sandy mix, etc.

 

This new Photoshop tool is called the "Discer". A rectangular tool - whose width can vary (like Brush Size).

 

There's also an option to control the 'depth' of operation. From shallow - to deep.

 

> A "homogenizer" is a laboratory or industrial device used to break down and evenly distribute particles within a liquid mixture, creating a stable and uniform emulsion, suspension, or solution.

 

You've used a drone to photograph this plowed field.

 

At your computer - running Photoshop, you run the "Discer". It takes the contents of whatever is under the 'tool' and chops up the lumps, rows, streaks, etc - into a more even harrowed appearance, and keeping the general color in that section.

 

Another scenario > you have an orange just sitting - on a painted piece of wood.

 

The lighting is too strong and the hills and valleys on the orange's surface - are too prominent and apparent.

 

And you can see the brush strokes on the wood. Too visible - need to be toned down somehow.

 

If we only had a tool - had could pass over the hilites and into the orange's shadow - and even out all that excessive detail.

 

No streaking - just some localized "homogenization".

 

I use the "Smudge" tool a lot, but it pulls stuff way too much. I also control the strength - using the 1 to 0 keyboard keys.

 

Need something better - to solve my image problems...

 

kc

2 replies

davescm
Community Expert
Community Expert
August 10, 2025

You can indeed make an action from those steps. I listed them as it is useful to understand what such an action actually does.

Dave

davescm
Community Expert
Community Expert
August 10, 2025

Take a look at frequency separation which is a method to split high frequency fine detail and low frequency general tones onto separate layers following which you can process them separately. It might allow you to achieve what you are trying to do.

Method :
1. Make 2 duplicates of your image layer

Name the lower - "Low frequency"

Name the Higher - "High Frequency"

2. Select the Low frequency layer and use Filter Gaussian Blur (around 6.0)

3. Select the High frequency layer
Go to menu Image > Apply Image
Set the source layer to Low Frequency
Set the blending mode to Subtract
Set Scale to 2 *
Set offset to 128 *
Click OK

4. Change the blending mode of the high frequency layer to Linear Light

5. Now you can clone out blemishes, smooth detail etc. on the high frequency layer and lighten or darken areas, change tones, on the low frequency layer





* Note - the above steps are for 8 bit/channel images. For 16 bit/channel step 3 changes slightly

3. Select the High frequency layer
Go to menu Image > Apply Image
Set the source layer to Low Frequency
Check "Invert" next to channel

Set the blending mode to Add
Set Scale to 2
Set Offset to 0
Click OK

Now carry on with step 4 above

Dave

Participating Frequently
August 10, 2025
Hi Dave,

Thanks for all the info.

Until there's a Tool to 'click' on, I guess I could make an Action and put
in all the steps you mentioned.

I will experiment when I get a chance...

kc