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These forums are being phased out. The new, improved Photography Forum is at classicalmusicforums.com.
Posted by John on September 28, 19104 at 16:19:33:
In Reply to: 3D- One picture worth a million! posted by Lawrence Hyde on October 14, 1999 at 19:04:03:
: Imagine hanging a poster of a mountain scene on a wall your hallway. Now Imagine that it's like looking through a window at the mountain- WOW!
: A two dementional picture reflects the same color from every point on it's face. When we see an image through a window, we are seeing different colors comming from each point on the window pane allowing each of our eyes to see a different image. Therefore a 3D picture must do the same.
: First I divide a square meter plastic screen into 1,000 rows and 1,000 columns. This creates a million sections in the screen with each section being a square millimeter. Each section needs to project a different color in every direction, so I mold tiny magnifying lenses into each section of the screen. An array of pixels behind each lens would make it change color depending on your angle of view. It turnes o
ut that I have to put a whole picture behind each lens and each lens must have 1,000x magnification.
: Since the poster needs to have a million tiny pictures-one for each lens- I have to actualy create a special camera for this. It requires a square meter sheet of film and a new screen with a million less powerful lenses. To ficilitate a shutter I use two boards with a million pinholes in each bo
ard. The inner board is aligned with the screen and the outer board is misaligned just enough to covering the pinholes of the inner board. The outer board is spring loaded so to take a picture I simply released the outer board causing it to quickly slide across the inner board and breifly line up their pinholes. A million images are tiled on the film. I then develope a transparency poster from the film so that I can place it between the projector screen and a lightbox.
: Since the projector screen has a million lenses, I have to divide each image on the poster into a million pixels. This is why each lens in the projector screen needs to have 1,000x magnification. Each square millimeter lens in the projector screen magnifies each square micrometer pixel of the image behind it to the size of the lens itself.
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