I try to edit some UV map exported from Blender. Before I want to edit some textures I want to select the regions by alpha.

What I did was some kind of binarization of the image and got rid of the false pixels.

That is working so far I got a black background and a white foreground.

My problem is I did something wrong and now all pixels are fully transparent. So if I deselect the alpha channel I can see the regions I want to select. If I remove the alpha channel everything is white. What I want is a transparent background and only the regions of the UV map visible (alpha value 255).

How can I achieve this?

  • What do you call "100% alpha"? Fully opaque? And "deselecting the alpha channel" is really clicking on its visibility in the Channels list? – xenoid Apr 5 '20 at 22:46
  • 1
    What is a false pixel? What is binarization? You really need to land your question. An image as an example would be useful. – Rafael Apr 7 '20 at 15:05

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