How can I convert 3D image to 2D image in order to view it without using a 3D glasses?

Update:
– I have no solution at the moment, but, you know, you can imagine that if you have a 3d image you will wear the glass to your camera and take another image (So, I think that it a physical method to convert from 3d to 2d.
3d image is actually a pair of images: 1 for left eye, and 1 for right. There are many ways to transfer those from computer to your eyes including magenta/cyan (your case), polarization ( http://en.wikipedia.org/wiki/Polarized_3D_glasses ), animation ( http://en.wikipedia.org/wiki/File:Home_plate_anim.gif ) etc. The point is that 3d is two different images. There is no real way to merge them to one. If you have source images (e.g. separate images for right and lelft) you can just take one of them and that will be your 2d image.