Three-dimensional television system

• US 4,062,045 A
• Filed: 02/24/1976
• Issued: 12/06/1977
• Est. Priority Date: 06/02/1975
• Status: Expired due to Term

• Current Assignee: President of Kyoto University
• Original Assignee: President of Kyoto University
• Inventors: Iwane, Waro
• Primary Examiner(s): Murray, Richard
• Assistant Examiner(s): Saffian, Mitchell
• Application Number:
  US05/660,647
• Time in Patent Office: 651 Days
• Field of Search: 178/6.5, 358/88, 358/89-91, 358/2
• US Class Current: 348/48
• CPC Class Codes: H04N 13/00 Stereoscopic video systems; Multi-view video systems; Details thereof
• CPC Class Codes: H04N 13/243 using three or more 2D image sensors

Abstract

A three-dimensional television system wherein a plurality of television cameras are disposed, for example, equidistantly from each other on a horizontal plane including a plurality of foreground subjects; each foreground subject is photographed at a plurality of different planes by using those cameras so as to obtain an image corresponding to each plane; the points of the image thus obtained which correspond to specific points of the foreground subject are mutually connected to form an angular division distribution pattern; this angular division distribution pattern is classified for transmission into brightness signals, depth signals, etc. thereby to restore the image signal of each plane from the brightness signals, depth signals, etc. thus transmitted; and from these restored signals a three-dimensional image is reproduced for display by means of a cathode ray tube (CRT).

Claims

1. A three-dimensional television system comprising:

photographing means for photographing an object to be photographed at a plurality of different planes to obtain a picture image for each said different plane;

angular division distribution pattern forming means for forming an angular division distribution pattern by connecting respective points of each said image obtained by said photographing means which correspond to the same specific points of said object for each different plane;

transmitting means for classifying for transmission said angular division distribution pattern into at least brightness signals and depth signals;

signal preparing means for preparing a signal of each said different plane from at least said brightness signals and depth signals of said signals transmitted by said transmitting means; and

image reproducing and displaying means for reproducing a three-dimensional picture image of said object from said signal prepared by said signal preparing means.

2. A three-dimensional television system of claim 1, wherein said image reproducing and displaying means comprises converting means for converting said angular division distribution pattern signal into an optical signal, sorting means for sorting said optical signal into an angularly-divided light flux, and focussing means for focussing said angularly-divided light flux passed through said sorting means.

3. A three-dimensional television system of claim 1, wherein said image reproducing and displaying means comprises a plurality of CRT means for receiving a directionally-divided signal laterally read out from said angular division distribution pattern signal, image composing means for composing the output images from said plurality of CRT means, and projecting means for projecting an image obtained by said image composing means.

4. A three-dimensional television system of claim 1, wherein said image reproducing and displaying means comprises a plurality of CRT means, and allotting means for allotting a directionally-divided image signal obtained from said angular division distribution pattern signal to each CRT through time division and position division of said directionally-divided image signal.

5. A three-dimensional television system of claim 1, wherein said transmitting means comprises detection means for detecting an angle of inclination α

signal denoting the depth of said object from said angular division distribution pattern.

6. A three-dimensional television system of claim 5, wherein said detection means comprises ultrasonic vibrators disposed in the form of a circular arc and ultrasonic wave detectors for detecting the outputs from said vibrators, respectively, said vibrators and detectors constituting an ultrasonic wave conductor.

7. A three-dimensional television system comprising a multiple image photographing and transmitting apparatus including:

a multiple image camera means for photographing an object to be photographed at a plurality of different planes to obtain a multiple picture image for each different plane;

angular division distribution pattern forming means for forming an angular division distribution pattern by connecting respective points of each said image obtained by said multiple image camera means which correspond to the same specific points of said object for each different plane; and

transmitting means for classifying for transmission said angular division distribution pattern into at least brightness signals and depth signals.

8. A three-dimensional television system of claim 7, wherein said multiple image camera means includes a plurality of cameras disposed on the circumference of a circle whose center is said object.

9. A three-dimensional television system of claim 7, wherein said multiple image camera means includes a plurality of cameras disposed on a corresponding plurality of parallel straight lines.

10. A three-dimensional television system of claim 7, wherein said multiple image camera means includes a plurality of cameras disposed on a corresponding plurality of parallel straight lines equidistant from each other, the lens faces of each camera being maintained parallel to and equidistant from a focussing plane, a given flat plane within a photographing space being used as a focussing plane common to each camera.

11. A three-dimensional television system comprising a monocular photographing and transmitting apparatus including:

a monocular camera for photographing an object to be photographed at a plurality of different planes to obtain a picture image for each different plane;

angular division distribution pattern forming means for forming an angular division distribution pattern by connecting respective points of each said image obtained by said monocular camera which correspond to the same specific points of said object for each different plane; and

transmitting means for classifying for transmission said angular division distribution pattern into at least brightness signals and depth signals.

12. A three-dimensional television system of claim 11, wherein said monocular camera comprises an optical unit including optical means for focussing said object, angle of incidence sorting means for sorting an incident light flux at a focussing plane for each direction of incidence, and recording and converting means for recording said angular division distribution pattern classified and angularly-divided for each direction of light incidence and converting an incident light into electrical signals.

13. A three-dimensional television system of claim 11, wherein said monocular camera comprises an optical unit including an objective lens for focussing said object, a combined means of a directionally-sorting prism for sorting an incident light flux at a focussing plane for each direction of incidence and a collective lens, a combined means of a small lens, a medium having a pinhole, and a photoelectric converting member for recording said angular division distribution pattern angularly-divided for each direction of incidence.

14. A three-dimensional television system of claim 13, wherein the diameter of said pinhole is smaller than the effective aperture of said small lens.

15. A three-dimensional television system of claim 11, wherein said monocular camera comprises an optical unit including an objective lens for focussing said object, a collective lens for collecting an incident light flux at a focussing plane, a combined means of a small lens and an angularly-dividing slit, and a photoelectric converting means for sorting for recording an incident light passing through said collective lens for each direction incidence.

16. A three-dimensional television system of claim 15, wherein said angularly-dividing slit is formed in said medium obliquely thereto.