Search found 2 matches
- 2018-03-09T02:52:39-07:00
- Forum: Users
- Topic: Create Mask for color X ?
- Replies: 5
- Views: 8168
Re: Create Mask for color X ?
They shouldn't be included in the mask, i.e. the final mask should be black wherever the original was transparent.
- 2018-03-07T04:13:41-07:00
- Forum: Users
- Topic: Create Mask for color X ?
- Replies: 5
- Views: 8168
Re: Create Mask for color X ?
You make #aabbcc transparent, then "-alpha extract" makes black where the pixels were #aabbcc, and white otherwise.
That's what you want, isn't it?
Then you do other stuff.
convert rmgcb.png \
-transparent '#aabbcc' \
-alpha extract \
rmgcb_red_yellow_blue.png
In my case, the original ...