Outline around "Selection From Path"

[richiie]

Happy Belated Thanksgiving 

Pls help. Every time I make a selection from path & cut & paste it, there is always this annoying outline around the object I selected.

Work below

https://drive.google.com/file/d/1gdhEoni...sp=sharing

[rich2005]

I can see the outline but that does not tell me how you got there. The border will be from anti-aliasing - semi transparent pixels at the border of the selection.

Is the purpose of this to color-in the cut and paste? One way is copy and paste as a new layer, and colour in that layer using alpha-lock. That makes sure that anti-alising is affected. Even if you do not colour in you can cut out those pixels in a number of ways. Alpha to selction, invert selection, grow selection a pixel or two, then cut.

One possibility for colour-in 40 seconds demo https://i.imgur.com/sxCNZFj.mp4

...but give a bit more info on how you go about your edit Someone might have more ideas.

[richiie]

(11-30-2020, 06:58 PM)rich2005 Wrote: I can see the outline but that does not tell me how you got there. The border will be from anti-aliasing - semi transparent pixels at the border of the selection.

Is the purpose of this to color-in the cut and paste?  One way is copy and paste as a new layer, and colour in that layer using alpha-lock. That makes sure that anti-alising is affected. Even if you do not colour in you can cut out those pixels in a number of ways. Alpha to selction, invert selection, grow selection a pixel or two, then cut.

One possibility for colour-in 40 seconds demo https://i.imgur.com/sxCNZFj.mp4

...but give a bit more info on how you go about your edit Someone might have more ideas.

Hi Rich2005,

Thank you for always replying to my questions. My steps were: making path(around orange fish), creating a selection from path, cutting that path, then pasting that path as a layer. If you look closely at the orange fish, you will see a fine white border around it. This is really stands out to me and the picture and I believe the picture would look better with it removed. I am trying to have the fish maintain their color while making the rest of the picture black and white. 


Also what exactly is anti-alising??? :/

Thanks again for the help!

Richiie

[rich2005]

Anti-aliasing are semi-transparent border pixels. I should not have really used that term here but you get these that show up as a faint line after a copy or cut. 

I did see the faint line but I could not reproduce it, so I have to ask

Do these only show in Gimp but not in an exported jpeg or png ?
Is the line moving, aka crawing-ants ?
Does the line go away using Select -> None

[richiie]

(12-01-2020, 09:34 PM)rich2005 Wrote: Anti-aliasing are semi-transparent border pixels. I should not have really used that term here but you get these that show up as a faint line after a copy or cut. 

I did see the faint line but I could not reproduce it, so I have to ask

Do these only show in Gimp but not in an exported jpeg or png ?
Is the line moving, aka crawing-ants ?
Does the line go away using Select -> None

Hey Rich, I was able to resolve the issue by copying the image I selected instead of cutting it. Whenever I cut the image there was a border, but when I copied it, it ended up fine.

Thanks a lot for the help and clarification. Have a great weekend.

PS I am working on another picture that I need help on so stay tuned lol

Thanks again. u the goat