Computer Graphics with Photoshop - RGB image from separate greyscale channel images?

Author

RGB image from separate greyscale channel images?

Jarmo Korteniemi

2004-01-28, 3:28 pm

Hi,

I have a question which probably has an easy and straightforward
answer...? Anyway:

I have three separate greyscale images, each taken in different
wavelengths (red, green and blue). Now, how do I transfer those
images into the R, G and B _channels_ in an RGB image? In other
words, how do I make a "real-color" image from these three
separate grey images? :/

Jarmo

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Jarmo Korteniemi * http://www.student.oulu.fi/~jkorteni *

Planetology group, Astronomy, University of Oulu, Finland

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Tacit

2004-01-28, 5:28 pm

>I have three separate greyscale images, each taken in different

quote:

>wavelengths (red, green and blue). Now, how do I transfer those
>images into the R, G and B _channels_ in an RGB image? In other
>words, how do I make a "real-color" image from these three
>separate grey images? :/

Easy way: Create a new RGB image of the same pixel dimension. Copy each
grayscale image and paste it into the appropriate channel of the new RGB image.

Easier way: Use the "Merge Channels" command from the Channels palette flyout
menu.

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edjh

2004-01-28, 7:28 pm

Jarmo Korteniemi wrote:

quote:

> Hi,
>
> I have a question which probably has an easy and straightforward
> answer...? Anyway:
>
> I have three separate greyscale images, each taken in different
> wavelengths (red, green and blue). Now, how do I transfer those
> images into the R, G and B _channels_ in an RGB image? In other
> words, how do I make a "real-color" image from these three
> separate grey images? :/
>
> Jarmo

----------------

quote:

>

If the images are the exact same pixel dimensions, with all three open
choose Merge Channels from the flyout in the Channels palette.

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