Sharpen edges only

If I make a drawing on a layer and it is surrounded by alpha and choose to make a heavy transformation the line crispness is lost because the edge becomes blurry.

This gives me 2 ways out to fix the blurry edges:

  • redraw the lines
  • erase the edge
    Both options are time consuming.

Is there a way to setup a sharpen filter just to the edges of the drawing quickly or some other solution for this blurry edges drawing without total manual reconstruction?

You can try a curves adjustement on the alpha channel.

You have a couple options. As @Deif_Lou said, I personally use Filter -> Adjust -> Color adjustment curves and set the channel to alpha, and adjust it until it crisps up the line.

Method 2 is to use Filter -> Enhance -> Unsharp mask Adjust the radius and strength until the line looks nice.

Other than that, you’ll have to sharpen the edges up yourself with an eraser.

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