Changing hair color using photoshop
robmetfan
friend of mine, and make her blonde?
How long would it take to do something like this? How "real" can it be
made to look? Anyone have an example of this sort of thing I can look
at?
Lets say its a... 320 X 240 picture, whereas her hair takes up approx.
10-20% of the picture.
Something worth noting, she does't have a digital camera, only a
webcam. So the picture's aren't of the best quality to start with. Not
sure if that makes it easier (the new hair color doens't have to look
as perfect since the original picture isn't of highest quality) or if
that makes it harder.
She has always wondered what she would look like as a blonde, and
lately she's been acting very "blonde" so I figured I'd see what I can
do about making her one. (=
(Yeah I know it's a stereotype... who cares. I'm blonde myself).
jarl_72
Clyde
Nice idea, but it misses the hardest part - selecting just the hair.
The key there is to take the photo with as much color and lumosity
contrast as you can get. Shoot your brunette friend against a light blue
or green background. Try to make the lighting as even as possible on the
background. Also, do put her too close to the background or the color of
it will bleed onto her.
This will make selecting and cutting the background much easier. It
still isn't that easy though. Most selection tools have a hard time with
partial transparency, which you get with hair. True brunette hair isn't
nearly as bad as blond hair, but it is a problem.
The method I find that usually works best is to try different color
modes. Look for the most contrast between the hair and everything around
it. With my green background, I seem to pick the "a" channel in LAB mode
the most. Copy that layer - making an alpha channel.
Then use Levels to increase the contrast as much as possible without
completely cutting out the partially transparent areas of the hair. It
will take a bit of practice. After this is always takes some additional
editing of the alpha channel to select just the hair. I usually just get
to work with the brush tool.
I use this method to cut out background and put my digitally created
ones in behind.
Clyde
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