Graphical Wednesday

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May 04, 2005

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* 3D Image *

Here's a couple of simple pictures of my car under a palo verde tree in bloom, with Mt. Lemmon in the background. At first glance they look exactly alike. However, if you look at them just right, you can see the 3 dimensional image.

   Here's how it works. Look carefully at the two images and slightly cross your eyes to align them together in your vision. This may take a little practice. But once you have them aligned you should then see three images, with a solid one in the center and two, faded ones on the outsides. If you focus on the one in the center you should see the depth in the image.

Although this may seem impressive to some of you, its certainly not anything new or ingenious. This type of stereoscopic effect had been discovered even before photography was invented. Using two images with slightly different vanishing points will give a three dimensional view. 
I took these two images, one right after the other, moving the camera slightly to the side for the second.
Just as our two eyes can see and conjoin two separate images, so can the camera. But in this case you have to manually align the two images. However, many years ago you could actually purchase a stereoscopic viewer to view these types of pictures. Placing the double images in the holder of the viewer and looking through it you could see the two images, seemingly aligned as one, giving the stereoscopic effect and giving the images the illusion of depth.
This art form became quite popular and somewhat died off over the years. Several times it had popped up again with the inventions of other means of viewing possibilities. Remember the "View-Master"? Two separate images on rotating disks provided us with amazing pictures. Yeah, I had one for a while. 
Many other forms of 3D viewing became popular over the years as well. Like the use of various types of glasses to trick your eyes into focusing on the two images.

But at this point, I am not in the business of distributing special glasses and special means of viewing my 3D image here. So you'll just have to rely on your own imagination and the creative flexibility of your eyes to align and view the image here. 


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