Jump to content

What is Alpha Mask?


Recommended Posts

The alpha masks are just simple images, most of the times black and white and they are used to set the alpha value of the image you're working on. let's start with one pixel, the first of both your original image and the mask: let's say your original image's alpha value is 255: not transparent and the average of red, green and blue of the mask's image is 0, the alpha value of the first pixel is set to 0. Then the same is done with the next pixel.

Short version: Alpha value=(mask's red value + mask's green value + mask's blue value)/ 3

To use an alpha mask you download the alpha mask plugin (search) and save an image you want to be your alpha mask, then in your other image you use the alpha mask plugin with your mask and press the ok button.

yhsjjie.png

History repeats itself, because nobody was paying attention the first time.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...