Can I make a 3D image via Photoshop?

I was looking at a 3D advertisement this morning and I got to thinking....could I use Photoshop to separate the red and greens, then shift them to create a 3D image?

I have some 3D glasses laying around, it might be fun to try.

Anyone ever tried this?

Not sure, but I think this might work:

1. In PS, open a grayscale image.
   
2. Go mode > Multichannel
   (You can also go mode > RGB, then delete the blue channel. You'll end up with channels called "cyan" and "magenta". Then go to step 7)
   
3. Open the channels palette, there will be one channel called "black"
   
4. Press the flyout menu,
   
5. Choose "Duplicate channel" (or click the "duplicate" icon)
   http://img.skitch.com …7ecu8q95rscyuuk​iwg665.jpg
   
6. Press the flyout menu again,
   
7. Choose "channel options" (or double click in a blank part of the channel field (not the con, not the name))
   
8. Rename it to "red" and set 255,0,0 for RGB values.
   
9. Click the other channel.
   
10. Press the flyout menu,
    
11. Choose "channel options"
    
12. Rename it to "green" and set 0,255,0 for RGB values.
    http://img.skitch.com …xuacyw9ias1fhxw​gubbci.jpg
    
13. Nudge it to the side by pressing Cmd (Ctrl) + arrow.
    
    Gives this: (screenshot, since you cannot save a multichannel image as jpg)
    
    http://img.skitch.com …bg5ni3u5rd47pde​p2771b.jpg
    

tomd wrote in post #9222228
I was looking at a 3D advertisement this morning and I got to thinking....could I use Photoshop to separate the red and greens, then shift them to create a 3D image?

I have some 3D glasses laying around, it might be fun to try.

Anyone ever tried this?

Yes, you can get a pseudo-3D look by shifting the red channel a little to the left. It isn't really 3D and won't work for all images.

The correct way to do 3D is:

- select a scene that will work well, something with foreground elements that can stand out from the background
- use a tripod
- take one shot then move the camera a little to the right, keeping the camera at the same height. The amount you will need to move the camera depends on subject distance. On a macro shot you may move only 1/4 of an inch or less, on a landscape you may move 6 inches or a foot.
- In photoshop, use the red channel from the left image you took first and the blue and green channels from the right image that you took second.

Thanks,
I'll give this a try. Something to do over the holidays!

Using the approach that krb suggested, you can actually create a composite image of the "left" and "right" image, side-by-side, with the left image to the left of the right image - like described here:

http://blogs.sun.com …y/stereoscopic_​hard_disks

and examples shown here:

http://www.youtube.com​/watch?v=Eq3MyjDS1co

You do not need 3D glasses, you cross your eyes until the left and right images register on top of each other, in what appears to be a middle image - that middle image will have perceived depth. Aka, stereoscopic image.

Post what you come up with!

Kirk

I don't think you can do it.
3D images are made from shots taken 1 feet or 2 feets apart, what creates the depth is the different angular movement from objects that are near the camera compared to objects far away from the camera.
If you only use one shot you will get a flat plane when using the 3d glasses, there will be no depth as the image is flat.

If you want to create a 3D image I recommend you to take the shots moving 1 or 2 feet to a side then combine them using stereophotomaker (free). You'll have several output options.

My 2 cents