Free-Vision Fusion (Cross-eyed method) R<J1bH1n3
This technique has the advantage of not requiring special viewing equipment. Fusion is the term used for the process for visually merging the left-eye image and the right-eye image into a single 3-dimensional image. When using a viewer, most of the work of achieving the needed abnormal convergence for stereo viewing is done by the optics and design of the stereo viewer. _7h:NLd
Eu4-=2!4
Free-vision fusion requires patience and practice because your willpower and eyes must do the work of the stereo viewer. You must be able to focus where your eyes aren't looking. H+oQ
L(i|_
[=})^t?8
Place the image in Figure 1 in the center of your screen. o~vUqj?BA
Sit at your normal distance. 1gA9h-'w
Slowly cross your eyes. You will see a double image, or four dots. c==5 cMUg
Continue to cross until the middle two images overlap. J\kG D
Adjust focus on middle image, keeping the two images overlapped. w$X"E*~>8
You should see the blue circle floating above the black circle.
