How to Sharpen Photo without Increasing Noise Visibility

Advertisement

How to Sharpen Photo without Increasing Noise Visibility

Sometimes it happens that we need to sharpen photos for which there is noise, for example, pictures taken at night. But overall increase in photo sharpness increases and the noise visibility also. How to be in this situation? I can show you one method in Photoshop, how to avoid it.

First of all you should find some appropriate photo to work with. I prefer to use this one. Open up this photo and start the tutorial. Go to Channel panel (Window > Channels). The first step is to look at the channels palette and determine which color channel best represents the area we want to capture. To the right, shown from top to bottom, you can see the red, blue, and green channels for this image. It’s obvious that the red channel contains the most information because it is most light. Click on the red channel and drag it down to the new channel button to create copy of it.

How to Sharpen Photo without Increasing Noise Visibility 01

We got the copy as you can se on the above picture. Then apply for copied channel Filter > Stylize > Glowing Edges with similar settings to these:

How to Sharpen Photo without Increasing Noise Visibility 02

Now we have effect like this:

How to Sharpen Photo without Increasing Noise Visibility 03

Hold the Ctrl button and click the Red copy thumbnail in the channels palette to load selection of this channel.

How to Sharpen Photo without Increasing Noise Visibility 04

After that we can delete this channel: click on the Red copy channel and drag it down to the delete current channel button to delete it. Then go to layers palette (Window > Layers) and press Ctrl+H to hide selection temporary, but don’t remove selection for now! It is important! Then apply Filter > Sharpen > Unsharp Mask with some suitable presets for the photo. Pay your attention that for each photo presets should be individual. I tried following presets:

How to Sharpen Photo without Increasing Noise Visibility 05

See the result now:

How to Sharpen Photo without Increasing Noise Visibility 06

Now, we have some selected area, but it is hidden for now, press Ctrl+H again to make it visible. Then press Ctrl+J to duplicate selected area to new layer. Then apply Filter > Sharpen > Sharpen Edges:

How to Sharpen Photo without Increasing Noise Visibility 07

That is it for now. We sharpened photo without increasing the noise visibility. Hope, you got some interesting knowledge from this tutorial.

How to Sharpen Photo without Increasing Noise Visibility 08

Advertisement


16 Responses

  1. Mike says:

    Thank you for an excelent tutorial i found it most helpfull.

  2. if says:

    thank you……

  3. mustafa says:

    Very helpful
    that was realy problem
    thanx
    but I thik its better you to explain the purpose of each step like this to define the edges or to remove the noise etc…

  4. Name (required) says:

    Thanks

  5. mahendra singh says:

    gud & thanks for this tutorial

  6. J.C says:

    Than you very much for this posted tutorial. I find it very useful. and an interesting way to handle with too pale skin. i am sure this method can be used with so many things more

  7. Joe says:

    Thank you

  8. rynault says:

    wow, i used to play with the contrast and brightness in order to sharpen the pictures but it was not always applicable and it causes changes in color… This is what I need, it really helps! thank you

  9. Amit Choubey says:

    Thnx 4 giving me such a best knowledge.

  10. farley says:

    thank you very much..it’s such a great help…can you help me solve my problem…how can i make 2 pictures come out at the same time…i’m using photoshop cs5…it’s easy to do when i’m using the old phootshop..help me pls

  11. Geoff says:

    This is unbelievable. Better than ANY piece of commercial software that I’ve used to perform this task. Brilliant and many, many thanks.

  12. Rheghor says:

    cool…thanks dude

  13. Sonal says:

    I really needed this effect specially for old images so Thank u so much for this effect..

  14. Kirti maurya says:

    Good work, i actually need it. Thank you

  15. jovani says:

    What do you mean when you said ” Hold the Ctrl button and click the Red copy thumbnail in the channels palette to load selection of this channel.” nothing happens all i see is duplicate channel or delete it. idk wat to do !

    • Keyur Rohit says:

      holding ctrl and clicking selects the area in the layer!
      works like selection tool but it just selects directly!