P3D Re: Integral photography??

[Andrew Woods <andrew@xxxxxxxxxxxxxxxxxxxxx>]

Integral Photography is sort of an extension of a lenticular 3D image.

With a lenticular 3D image you have lenticular lens or screen placed over a
specially contructed image.  The lenticular screen consists of a series
of vertical lenslets or column lenses.  Behind each lens column is 
a set of image strips - one for each viewing direction.  If the
image has two views, there will be two strips behind each lens.

In integral photography, the produced image is somewhat like a fly's eye
and somewhat similar to a lenticular 3D image.  Again there is a
lensed screen placed over a specially contructed image.  This time
the lensed screen has lenses arranged like a fly's eye.  Behind each
individual lens appears individual image segments - one for each viewing
direction.

The advantage that integral photography offers is that the images
produced provide motion parallax in two dimensions (side-to-side and
up-and-down) unlike a lenticular image which only provides motion parallax
in one direction.

Here are two references to integral photography:

  Okoshi, T.  1976, "Three-dimensional imaging techniques", Academic
     Press, London.

  M. C. Forman, A. Aggoun, 1997, "Compression of full-parallax integral 
     3D TV image data" in Stereoscopic Displays and Virtual Reality
     Systems, (proceedings of the Stereoscopic Displays and Applications
     IIX conference), Proceedings of the SPIE vol. 3012.

Cheers,
Andrew Woods.



13 days to go to the Stereoscopic Displays and Applications conference
          http://info.curtin.edu.au/~iwoodsa/stereoscopic



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