PRODUCING ANAGLYPH IMAGES
Bob Mannle - 1945-2005
All images are to be viewed with Red/Left and Blue/Right 3-D glasses.
I suggest they be converted to Photo CD, or you can scan them. The primary concern here is to be sure that they have the same dimensions, and color balance. They both should also be aligned horizontaly (one should not be rotated). Vertical alignment is also important but you can take care of this with your software.
Having the ability to split, swap, and/or merge channels is mandatory. Additional color correction, level adjustment, and positioning control is also important.
For the computer monitor I find that red and blue glasses work the best. Make sure that when you put them on that the red lens is covering your left eye.
Going back to the left screen image, still the RED channel... do a PASTE.
MANIPULATING THE IMAGE IN SPACE
Now that the anaglyph image is produced it may be extending out in front of your monitor too far, or may be back too far. Using the RED channel again... do a SELECT ALL and use the FILTER/OFFSET function to move the RED channel to the right or left. Moving it to the right will bring the image toward you, and of course moving it to the left will push it back. Crop the image accordingly once the process is complete.
FULL COLOR ANAGLYPHS
This demonstration was done using grayscale images mainly because 99% of color images that you will want to use for color anaglyphs will not work very well. A color anaglyph must be comprised of color images that do not have any highly saturated blue s or reds. Even then... yellows, oranges and greens do a pretty good job of creating visual problems. Therefore you may want to do some color manipulation prior to conversion. Basically you will be working with a very monotone image... almost like a grayscale. The process for color anaglyphs is exactly the same as described above.