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Home Optical Systems Method-and-apparatus-for-creating-a-white-light-interference-hologram-from-PC-input-photographic-data

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 Method and apparatus for creating a white-light interference hologram from PC input photographic data

Details
Inventors: Kikinis, Dan;
Assignee: Lextron Systems, Inc. (Saratoga, CA)
Primary Examiner: Henry; Jon
Assistant Examiner:
Attorney, Agent or Firm: Boys; Donald R. Central Coast Patent Agency, Inc.

A system for producing a white-light interference hologram includes a camera adapted for recording a first and a second bitmap image of a scene from separate vantage points, and the separation distance of the vantage points, a computing engine adapted to compute three-dimensional x, y, and z characteristics of an interference hologram topology for the scene from the bitmap image and separation data, wherein x and y are two dimensional locations of bits in a bitmap of the topology and z is a depth dimension for each x,y bit, and a printer adapted to print in color the x,y bitmap, and to create the depth dimension z at each x,y bit location, providing thereby a three-dimensional interference hologram topology for the scene. In a preferred embodiment the depth dimension is created by electrophoresis, using a medium having an electrophoretic gel layer, with the ink applied to the gel in a bit-mapped pattern being ionic in nature, and capable of being migrated in the gel layer by electrophoresis. In other embodiments the third dimension is provided by using magnetic ink and migrating the bits using controlled magnetic fields.

DETAILED DESCRIPTION What is claimed is: 1.
A system for producing a white-light interference hologram, comprising: a camera adapted for recording a first and a second bitmap image of a scene from separate vantage points, and the separation distance of the vantage points; a computing engine adapted to compute three-dimensional x, y, and z characteristics of an interference hologram topology for the scene from the bitmap images and separation data, wherein x and y are two dimensional locations of bits in a bitmap of the topology and z is a depth dimension for each x,y bit; and a printer adapted to print in color the x,y bitmap of the topology, and to create the depth dimension z at each x,y bit location, providing thereby a three-dimensional interference hologram topology for the scene.




Description:
FIELD OF THE INVENTION The present invention is in the field of digital photography and printing, and pertains more particularly to a method and apparatus for digital photography, and use of the photographic data for creating interference holograms using printing apparatus.
BACKGROUND OF THE INVENTION Rendering 3-dimensional (3-D) graphics on a 2-dimensional plane such as a computer monitor screen has been an emerging technology marked with many advances.
For example, with the use of special 3-D cards and adapters, a 3-dimensional object may be created from dimensional information provided of the form of input to a computer system running appropriate software.
After calculating input data, the computer system renders a simulated 3-D image on its 2-dimensional screen.
A viewer may use special goggles to view 3-D images on a computer screen or other two-dimensional apparatus such as on a movie screen.
In another aspect of the art, hologram techniques are also used to produce 3-D effects on plastic cards and the like.
Such holograms are familiar to many as embossed on such as credit cards.
This sort of hologram is called a white-light-interference hologram, and is created through a reflective surface having a relatively complicated topology that reflects white light in a manner to produce interference patterns that the human eye sees as a 3-D image



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