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Anaglyph 3D Imagery

by Roger Jayzee

To produce an anaglyph 3D image all you have to do is replace the red channel from the right image with the red channel from the left. Bring both pictures into Photoshop. Select the left image. Go into the channels for the image and select only the red channel. Copy it. Now go to the right image. Go into the channels for the image and select the red channel. Paste the red channel from the left image. You can close the left image now.

From now on we are dealing with the right image. With the red layer still selected, you can use the MOVE tool to slide the red channel left / right, up or down to adjust the convergence.

It is helpful if you do this with your red and cyan 3D glasses on. Having them on will allow you to see the 3D effect change as you change the point of convergence.

Here is the composited stereo image I came up with:

Here is another example:

The following 2 images show the same composite but with different POCs. If you look at them with 3D glasses on (red, cyan) you will notice that in the first one, the alien is completely behind the screen. In the second one its left arm and face are sticking out of the screen.

For people who don’t have 3D glasses(red/cyan), you can buy them on amazon.com for a couple of dollars here:

Cardboard anaglyph 3D glasses (Buy from U.S. store here)

Anaglyph 3D glasses cardboard (Buy from the UK)

Anaglyph 3D glasses (Buy from South African store here)

Don’t buy the plastic sunglass type. Their lenses are too think and don’t let enough light through. Buy the cheap paper ones. This is one instance in life where cheap is actually better!

Also, for those who don’t have the glasses, here are the 2 images from above presented in “cross eye” 3D. If you look at the image and cross your eyes you will see 3 images instead of the 2 in the picture. Look at the one in the middle and relax your eyes. If you do it correctly, the image in the middle will become 3D!

Once you can see the middle image in 3D, you can place your opened hands about 8 inches in front of your face and use them to block the left and right image. This will make looking at the middle image easier. With a little practice, viewing cross eyed 3D images becomes easy.

Bonus tip! Here is an easy way to find out where your POC is located when setting up a stereo image. If you flip back and forth between the left and right image, you will notice that the picture seems to be revolving around a specific point in space. This point is the POC.


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