Chuck Norcutt wrote:
> There is a difference between my correction and Moose's. Moose started
> from the original image and I started from the "corrected" image.
I just figured the less that had been messed with, the better. If the
action left artifacts, i didn't want 'em.
> The
> difference is in the color of the iris. It's not clear to me if the
> iris color in the original image is correct or if it has been affected
> by the red-eye actually shining through the iris because it is so
> bright. On further thought it occurs to me that the iris in the
> "corrected" image isn't right either since the entire pupil and iris
> have probably been monochromed from one channel.
>
I think it's impossible to know the true color of the iris from the
photo. Even if the reflection from the back of the eye doesn't color it,
there is no WB reference and we don't know camera, flash or WB setting.
Ya just gotta do something reasonable.
> In any case, the original image probably has a closer iris color
> (appears brown) but the real iris might not be that bright.
> <http://www.moosemystic.net/Gallery/Others/JezC/redeye.htm>
>
> I think a better image than either of our corrections will be found by
> starting with the original and painting the pupil as both of us did.
> However, I don't like Moose's choice of pure black which also looks a
> little unnatural. Choose a very dark gray instead. Near black but not
> completely so. RGB values of about 30-40 should do it.
>
Using a very dark gray doesn't generally look any more - or less -
realistic to me, as long as it is very dark and neutral in color. It
does look more realistic in this particular case because there are few
enough pixels that a lighter pupil makes the jagged line less obvious.
Chuck Norcutt also wrote:
> Forgot to mention... can be seen here
> <http://www.chucknorcutt.com/temp/after%233.jpg>
> Just noticed that the hightlights aren't the same size but I'm not gonna
> fuss with it any more. The technique seems to work.
>
I don't know if it's a general result of the technique, but I don't like
this one as well as your other one. The apparent pupils are too large
and the iris so dark that it looks unnatural, and not true to the
original. Although the true color of the iris is uncertain, I think it's
size is clear in the original, and should be kept.
The uneven highlights are one reason I prefer to select areas using
magic wand and/or color selection, then only correct irregularities.
Painting the whole thing, it's too easy to changes sizes of areas.
especially true with small images.
Moose
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