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Erasing semi-transparent selections

Aug 13, 2014, 16:49
Post: #1
Erasing semi-transparent selections
I want to erase anything which is about 75% transparent so I do the following:
1. Select Fuzzy Select Tool.
2. Select a Threshold of 190.
3. Select a transparent part of the screen.
4. The semi-transparent part of the screen is now selected.
5. I choose the Eraser with a large size and move it over the semi transparent edge.

The problem I get is that when I do the above the Eraser doesn't just work on the selection it also erases stuff which isn't selected. It seems that when you select a transparent part of the screen and GIMP shows a line where the select should end, it just ignores it...

Any ideas?
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Aug 13, 2014, 20:04
Post: #2
RE: Erasing semi-transparent selections
(Aug 13, 2014 16:49)Andrew Wrote:  I want to erase anything which is about 75% transparent so I do the following:
1. Select Fuzzy Select Tool.
2. Select a Threshold of 190.
...
I've quoted to the step that could be problematic (see below)
Quote: It seems that when you select a transparent part of the screen and GIMP shows a line where the select should end, it just ignores it...

Any ideas?

I'd suggest a few options (individual methods):

1. creating a manual selection either by using the quick mask http://www.wikihow.com/Use-QuickMask-in-Gimp

or
2. path (Then "path to selection") tool Path

OR
3. Freeselect free select around the areas that are transparent, then either erase or push delete.

- - -- Unseen Selected pixels -- - -
*The reason for a manual select is automatically selecting with the fuzzy select or color by select, may select unseen transparent pixels outside of your intended selection due to jpeg artifacts or image quality/imported format.

"In order to succeed, your desire for success should be greater than fear of failure." BC
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Aug 13, 2014, 22:03 (This post was last modified: Aug 13, 2014 22:04 by Andrew.)
Post: #3
RE: Erasing semi-transparent selections
Thanks for the replies, much appreciated, I've learnt a few more techniques.
The layer mask looks like it'll do what I want.
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