EP0240227A2
Expired / Lapsed
EP
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Three dimensional movie film
Assignee: Individual
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Filing: 1987-03-24
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Granted: —
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Expires: 2007-03-24
Abstract
Abstract A movie film to provide a three dimensional image for the viewer is made by creating at each of a number of successive instants in time a number of simultaneous images of an object from a number of different viewpoints, using the number of simultaneous images to produce a composite hologram of the object for each particular instant, and recording the composite holograms representing the successive instants one after another in sequence along a film. To view such a film each composite hologram is moved into a field of view and illuminated in succession one after another at a rate above the flicker frequency of human observation. Each composite hologram creates a three-dimensional image of the object as seen from a number of different viewpoints and then the sequence of composite holograms enables the observer to follow movements of the object as this varies with time.
Inventors
- 👤 Gordon Stanley James Allen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 21:13
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/04; G03H1/0402; G03H1/0406; G03B; G03B35/00; G03H1/26; G03H1/2645; G03H1/268; G03H1/22; G03H1/2249; G03H2001/2263; G03H2001/2268; G03H2001/2655; G03H2210/00; G03H2210/10; G03H2210/11; G03H2210/20; G03H2210/40; G03H2210/44; G03H2210/441; G03H2210/62
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
A method of making a three dimensional movie film comprising creating at each of a number of successive instants in time a number of simultaneous images of an object from a number of different viewpoints, using the number of simultaneous images to produce a composite hologram of the object for each particular instant, and recording the composite holograms representing the successive instants one after another in sequence along a film.
Claim 2
Independent Claim
70 words
A method of making a three dimensional movie film comprising creating at each of a number of successive instants in time a number of simultaneous images of an object from a number of different viewpoints, using the number of simultaneous images to produce a composite hologram of the object for each particular instant, and recording the composite holograms representing the successive instants one after another in sequence along a film.
Claim 3
Dependent Claim
43 words
A method according to claim 1, in which the number of simultaneous images of the object from a number of different viewpoints are created by one or more cameras which create a record of the object from the two or more different positions.
Claim 4
Dependent Claim
17 words
A method according to claim 2, in which the camera or cameras are video cameras or cine-cameras.
Claim 5
Independent Claim
46 words
A method according to any one of the preceding claims, in which the at least two images obtained from the one or more cameras are processed by image processing means to produce additional images corresponding to the number of viewpoints required to produce the composite holograms.
Claim 6
Dependent Claim
15 words
A method according to claim 4, in which images of substantially thirty viewpoints are created.
Claim 7
Dependent Claim
51 words
A method according to claim 4 or 5, in which the image processing means includes a programmed computer which is programmed to scan the images from the one or more cameras, interpolate the information contained in these images, and generate information corresponding to the images of the number of required viewpoints.
Claim 8
Dependent Claim
64 words
A method according to claim 6, in which the computer includes a viewpoint generating program which analyses the information obtained from the images produced by the two or the two adjacent cameras to identify particular objects, compares and identifies discrepancies between images of the same object produced by the two cameras, and from this comparison generates image information corresponding to the other required viewpoints.
Claim 9
Dependent Claim
87 words
A method according to claim 7, in which the computer is also programmed with a time difference program which compares the images from one camera at one instant in time with that from the same camera at a successive instant in time and if these images are generally similar, instead of the computer performing the viewpoint generating program for each instant in time, the information for each viewpoint is merely changed in a way corresponding to any change detected in the successive images from the one camera.
Claim 10
Independent Claim
87 words
A method according to any one of claims 4 to 8, in which once the information concerning the object from the number of different viewpoints has been obtained it is put into a form in which a hologram can be prepared from it by using the information to modulate a laser beam as it is scanned over an image receiving surface and causing light scattered from the surface to interfere with an unmodulated reference beam from the same laser to generate a strip of the composite hologram.
Claim 11
Independent Claim
74 words
A method according to any one of claims 4 to 8, in which once the information concerning the object from the number of different viewpoints has been obtained it is put into a form in which a hologram can be prepared from it by using the information to produce a permanent visible image and then using the resulting permanent visible image as the object in the generation of a strip of the composite hologram.
Claim 12
Dependent Claim
99 words
A method according to claim 10, in which the viewpoint information for each frame is used to control the flying spot of a high resolution flying spot tube to produce an image on a frame of a movie film, the movie film so produced having all of the viewpoints at one instant in time arranged as successive frames of a group of frames and then all of the viewpoints at the next instant in time as successive frames of the next group of frames, and so on, each group of frames then being used to generate each composite hologram.
Claim 13
Dependent Claim
50 words
12 A method according to any one of the preceding claims, in which the sequence of composite holograms are white-light transmission holograms or are converted into a corresponding sequence of white-light transmission or Benton holograms to enable them to be viewed using a point or line source of white light.
Claim 14
Independent Claim
64 words
A method according to any one of the preceding claims, in which coloured three dimensional images are produced by obtaining the initial images of the object in full colour and making colour separations of these, and in the process of producing the sequence of composite holograms producing sequential lines in each composite hologram or sequential holograms, in each of the colour separations in turn.
References Cited (Backward Citations)
No citation records indexed.
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