Computer Graphics with Photoshop - Re: Repairing an image

Author

Re: Repairing an image

Tom Nelson

2004-05-13, 5:28 pm

You've run into an idiosyncracy of the way Adobe does color. Pure white
has no saturation, and increasing it even 100% is still desaturated
(doubling 0 is still 0). Changing the hue makes no difference either.
Black is the same way.

Replace Color won't change white or black to a color, though it will
let you darken the image using the brightness control. Hue & Saturation
allows you to change white and black if you:
A. Click the "Colorize" checkbox
B. Use the Lightness slider to change the brightness to a shade of gray.

Neither of these will do what you want, however. If you just want to
paint a flat color over the white areas, choose a color that's lighter
or the same as the colored highlights on the flower and paint using the
Brush tool in "darken" mode. Or clone in darken mode.

Whatever you do, it will still look strange.

Tom Nelson
Tom Nelson Photography

"Keith" <NOkmonSPAM@adelphia.net> wrote in message
news:SrOdnYSea9CSYD3dRVn-iQ@giganews.com...
> Hi,
>
> I took a picture of some flowers, half of which were exposed to very
bright
> sunlight. The sunlight caused a decent portion of the image to
"blow-out",
> and the orange flowers look completely white. Of course, the error was in
> the picture taking, but I'm trying to repair after-the-fact.
>
> Photoshop CS reports 255,255,255 for all the affected areas. I've tried
> using Image...Adjustments....Replace Color, but something odd happens. I
> first select the color to be replaced(white w/ a particular tolerance)
with
> the eye dropper, and then select the replacement color(orange). Both are
> correct and look correct in the provided squares. When I execute the
> action, the resulting replacement color is always a gray, 146/146/146, in
> one case. No matter how I change the replacement color, the resultant
> replaced color is always some shade of gray.

-xiray-

2004-05-14, 5:28 pm

On Wed, 12 May 2004 21:44:48 -0500, Tom Nelson
<ludibund@xintegraonline.com.invalid> wrote:

>Whatever you do, it will still look strange.
>

Not necessarily

If you're really want to spend a hugh amount of time manipulating the
image, you could clone color (and texture) from adjacent areas.

But it would probably be easier to scrap the pic and learn from your
mistake. Pay more attention to lighting the original shot.

Mike Russell

2004-05-24, 4:14 am

Keith wrote:
> Hi,
>
> I took a picture of some flowers, half of which were exposed to very
> bright sunlight. The sunlight caused a decent portion of the image
> to "blow-out", and the orange flowers look completely white. Of
> course, the error was in the picture taking, but I'm trying to repair
> after-the-fact.
>
> Photoshop CS reports 255,255,255 for all the affected areas. I've
> tried using Image...Adjustments....Replace Color, but something odd
> happens. I first select the color to be replaced(white w/ a
> particular tolerance) with the eye dropper, and then select the
> replacement color(orange). Both are correct and look correct in the
> provided squares. When I execute the action, the resulting
> replacement color is always a gray, 146/146/146, in one case. No
> matter how I change the replacement color, the resultant replaced
> color is always some shade of gray.
>
> The outside border structure of the flowers is intact, I think mainly
> due to the fact that the background is either shaded by the flowers
> on the top, or is simply very dark.
>
> I'm not sure which tools or methods I should be using to fix this
> problem. I've tried creating a new layer, brushing over the affected
> areas with the new color, and then adjusting the opacity of the
> layer. This has produced the best results I can get so far, but it
> still looks bad.
>
> Any suggestions on how to attack this problem? The link below is the
> image:
>
> www.techtravels.org/flowers.jpg

Keith,

I'd like your permission to use your image in a tutorial, and would be happy
in any case to show you what I've come up with.
--

Mike Russell
www.curvemeister.com
www.geigy.2y.net