P3D Re: Re; Anaglyph in Photoshop

[Tom Deering <tmd@xxxxxxxxxxx>]

On 7/29/98, Marvin Jones wrote:
>Message text written by INTERNET:photo-3d@xxxxxxxxxxxxxxxxx
>>Can someone point me to instructions on how to change stereo pairs into
>anaglyphs?  Is there a FAQ or is it on my 3d-CD?  Thanks!<
>
>No need for a FAQ, really. Just take the red channel from the left-eye
>image and use it to replace the red channel on the right-eye image. Voila!
>Anaglyph. You can also use the Stereo Image Factory (I think that's the
>current name), a demo of which is on 3D-CD. It has all kinds of useful
>bells and whistles, but in the end it does the same thing.



Is this the correct process?  Correct me if I'm wrong.

0. Open both images in Photoshop.
1. Change both images to greyscale.
2. Change both images back to RGB.
3. Click on the left image to bring it to the front.
4. Open the Channels palette.
5. Click on the red channel in the palette.
6. Choose Copy from the Edit menu.
7. Click on the right image to bring it to the front.
8. Click on the red channel in the palette.
9. Choose Paste from the Edit menu.
10. Drag the green channel to the tiny trashcan on the lower right corner
of the channel palette.
11. Save your anaglyph as a high-quality JPEG under a new name.

I don't make anaglyphs myself, but I do quite a bit of Photoshop work.
These steps seem like they would make a greyscale-type anaglyph.   Those
tinted full-color kind would require a very different sequence.

Tom

(See you all at the NSA.  I'll be the one wearing the red polyester suit.)



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