Stereo Photography

Welcome!

How to create anaglyphs with computer.

With a computer, the easiest way to produce stereoscopic images is to create anaglyphs. An anaglyph mixes into one image the stereoscopic views thanks to the complementarity of colors in the RGB channels. With colored glasses, one can then filter the image and give to each eye the proper informations.

You need two stereo views.

There are several ways to make stereo views. The pictures which were created using 3D Studio Max

The left view.

The right view.

Another way to create some stereo images of the real, non raytraced world is to use a standard photo camera.To do this, make the first picture, move the camera about 6cm to the right and make the second one. It is important that you don't rotate the camera, nor shift the camera up or down.

The work with Photoshop. Operations on the channels.

Open the 2 images in Photoshop (or any sofware that can manage RGB channels), image 1 corresponds to the one seen by the right eye, image 2 is for the left. While playing on the channels, you'll mix these informations to create a unique image (the glasses then allow each eye to recieve the relevant information). Image 1provides Green and Blue channels and image 2 the Red one.
	Select the Red channel of image 2 (The left view).
	Copy it
Go to image 1 (The right view).
	Select Red channel Paste in the Red channel of image1 (The right view). Go back to RVB.

With the glasses , you can now evaluate the result. It could be dissatisfactory ; in this case, you can try to displace slighty the Red channel horizontaly.

http://www.grikat.com
E-mail: artgrikat@012.net.il

12.12.2002@ Grigory Anastasiev

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