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Discolored teeth help - Printable Version

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Discolored teeth help - chaz2000 - 10-20-2021

I'm relatively new to gimp.
I took some pics of a lady friend. Her husband says that she is sensitive about the discoloration of her teeth. It looks like she has caps on the bottom of her two top front teeth.

I tried:
making a new layer
using the lasso selector, select the darker area of the two teeth
in the colors menu, selected and decreased the Hue-saturation. (didn't work)

Appreciate your help.


RE: Discolored teeth help - PixLab - 10-21-2021

(10-20-2021, 07:41 PM)chaz2000 Wrote: I'm relatively new to gimp.
I took some pics of a lady friend. Her husband says that she is sensitive about the discoloration of her teeth. It looks like she has caps on the bottom of her two top front teeth.

I tried:
making a new layer
using the lasso selector, select the darker area of the two teeth
in the colors menu, selected and decreased the Hue-saturation. (didn't work)

Appreciate your help.

A very quicky to show a process, but you will do a better selection (feathered) and fit properly  Wink
(In my example I forgot to feather the selection, did I said it was a quicky?)

Duplicate ➤ work on the top layer only (we use it only for the teeth)
Select properly the teeth (not like me Big Grin )
Use Colors ➤ Curves...

[attachment=6879]

Once you equalized the whiteness use your selection to make a mask which will remove the degraded pixels generated by the process,

[attachment=6882]

To smooth the mask out blur the mask slightly (gaussian blur)
To make the mask fit as closed as possible Filters ➤ Distorts ➤ Value propagate... chose Mode "black" then Ctrl+F as necessary (it's just by 1 pixel),
blur the mask slightly at the end if necessary ➤ only if smoothing is needed again

the .xcf file
[attachment=6880]

result
[attachment=6881]