How to remove low-alpha pixels in photoshop
Assume that I have a png image of size 32x32(1024 pixels). It consists of x pixels with alpha > 60% and (1024-x) pixel with alpha < 25%. Could you please tell me how to remove all low-alpha( alpha < 25% ) pixel in image?
Is there anything like alpha range - color range in photoshop?
Here's one way to do it:
- Extract the alpha channel, so it's a separate mask. Here's a way to separate the alpha.
- Edit the alpha channel, using levels or curves.
Does that help? Do you need more detail?