Computer Graphics with Photoshop - RGB Color Seperation

Author

RGB Color Seperation

santhosh.kumargv@wipro.com

2006-03-22, 6:14 pm

Hi,

Can any one please let me know how the color seperation can be done.
Any formula. Please let me know.

I also would like to know how to extract a particular color from the
color Image. Example: if i want to extract a gray color from the color
image.

please let me know any algorithm present or formula given any where.

Thanks in advance for this help.

Santhosh

KatWoman

2006-03-23, 10:17 pm

<santhosh.kumargv@wipro.com> wrote in message
news:1143038877.179806.113860@g10g2000cwb.googlegroups.com...
> Hi,
>
> Can any one please let me know how the color seperation can be done.
> Any formula. Please let me know.
>
> I also would like to know how to extract a particular color from the
> color Image. Example: if i want to extract a gray color from the color
> image.
>
> please let me know any algorithm present or formula given any where.
>
> Thanks in advance for this help.
>
> Santhosh

LOOK AT CMYK separations are done in CMYK (a color space for print) not RGB
(a color space for monitors)
to sample a color use the eyedropper, look at the info palette
>

iehsmith

2006-03-24, 3:17 am

On 3/22/06 8:47 AM, santhosh.kumargv@wipro.com commented:

> Hi,
>
> Can any one please let me know how the color seperation can be done.
> Any formula. Please let me know.
>
> I also would like to know how to extract a particular color from the
> color Image. Example: if i want to extract a gray color from the color
> image.
>
> please let me know any algorithm present or formula given any where.
>
> Thanks in advance for this help.
>
> Santhosh

I see no one has answered you, so maybe my poor attempt will atleast get the
ball rolling.

I don't know what you mean by RGB coloe separation because I think of
separations on in print terms, for separate plates. These don't use RGB
though.

I also don't work in or know algorythms or formulas. You can, however, go
into the channels palette and select Split Channels from the flyout menu.
This will split/open your image as 3 grey representations, one for each
color. You can also merge them back together again from the same menu.

As for "extracting" a color; if you mean sampling/identifying a color you
can use the eyedropper tool, click on the color, view it's properties in the
Color palette, or drop it into your swatches to use elsewhere.

I doubt any of this helps though. You probably work with numbers and your
brain; I only work with my eyes and hands;)

inez