Jump to content

Selecting only in terms of transparency


yunudo

Recommended Posts

Is there a way/tool to select pixels only in terms of transparency? like, selecting all the pixels that their transparency is at 142,  no matter what their color are?

Link to comment
Share on other sites

Hi there @yunudo. Welcome to the paint.net forum ☺️

 

Go to the Plugin Index (there's a link in my signature)....

 

Type in the Keyword: Transparen (leave the end missing to capture both transparent & transparency)

 

In particular, UnAlpha might be worth a look. If that doesn't work, @BoltBait and @Red ochre have excellent tools for dealing with transparency in their plugin packs.

Link to comment
Share on other sites

Step 1: install my plugin pack

Step 2: Open your image in Paint.NET. 

Step 3: Duplicate the layer you want to select from 

Step 4: Effects > Object > Switch alpha to gray

Step 5: Use magic wand (tolerance 0, global selection mode) to select the gray pixel of the alpha level you want to select. 
Step 6: Switch back to your original colored layer. 
 

 

  • Upvote 2
Link to comment
Share on other sites

18 hours ago, BoltBait said:

Step 4: Effects > Object > Switch alpha to gray

Brilliant! Thank you for pointing out another use of your plugin.

Perhaps worth pointing this out on the pack topic?

 

EDIT: (for the benefit of anyone who may ask)

To pinpoint the exact pixel to select, you may have to

- either turn the grayscale layer visibility off, but keep it selected/highlighted in the Layers window,

- or move grayscale layer below the original layer, but keep it selected/highlighted in the Layers window.

This way you can see the original layer when clicking with the Magic Wand on exact pixel you want on the grayscale layer.

  • Upvote 1

Xkds4Lh.png

Link to comment
Share on other sites

1 hour ago, Djisves said:

To pinpoint the exact pixel to select, you may have to...

 

Thanks for typing that up. When I first responded, I was on my phone and was too lazy to type it up. I was kinda hoping the OP would figure that part out.

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.

×
×
  • Create New...