Free-Vision Fusion (Cross-eyed method) ?VE'!DW
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. o(Z~J}l({
$RY GAh
Free-vision fusion requires patience and practice because your willpower and eyes must do the work of the stereo viewer. You must be able to focus where your eyes aren't looking. }l$zZ>.\H
[5p9p1@u{C
Place the image in Figure 1 in the center of your screen. c]#}#RJ`\
Sit at your normal distance. r1%{\<
Slowly cross your eyes. You will see a double image, or four dots. H2:
Zda#
Continue to cross until the middle two images overlap. zE$HHY2ovi
Adjust focus on middle image, keeping the two images overlapped. a"U3h[;$y
You should see the blue circle floating above the black circle.
