Single camera autosteroscopic imaging system

• US 5,157,484 A
• Filed: 11/29/1990
• Issued: 10/20/1992
• Est. Priority Date: 10/23/1989
• Status: Expired due to Term

• Current Assignee: Vision III Imaging, Inc.
• Original Assignee: Vision III Imaging, Inc.
• Inventors: Mayhew, Christopher A., Pritchard, Eric K.
• Primary Examiner(s): Kostak, Victor R.
• Application Number:
  US07/619,512
• Time in Patent Office: 691 Days
• Field of Search: 358/88, 358/89, 358/91, 358/92, 358/3, 350/130, 350/131, 350/144, 352/62
• US Class Current: 348/50
• CPC Class Codes: G03B 35/04 with movement of beam-selecting members in a system defining two or more viewpoints
• CPC Class Codes: H04N 13/189 Recording image signals; Reproducing recorded image signals
• CPC Class Codes: H04N 13/207 using a single 2D image sensor
• CPC Class Codes: H04N 13/236 using varifocal lenses or mirrors
• CPC Class Codes: H04N 13/243 using three or more 2D image sensors
• CPC Class Codes: H04N 13/296 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 13/302 for viewing without the aid of special glasses, i.e. using autostereoscopic displays
• CPC Class Codes: H04N 13/315 the parallax barriers being time-variant
• CPC Class Codes: H04N 13/334 using spectral multiplexing

Abstract

A single camera autostereoscopic recording system includes a single image recorder having a single optical path moved along the scanning path substantially continuously for a plurality of scanning cycles. A path defining structure includes the ability to adjust the convergent point as well as the extent of travel along the scanning path or disparity of the images. The convergent point of the scanning path can be manually or automatically adjusted using a range finder. A unique driver structure provides scanning motion with reduced reactional forces. The degree of motion of the recorded images is used to adjust the amount of travel along the scanning path. Synchronization between the driver and the recorder is bi-directional for double exposures. The recorded image is adjusted in recording or in display as a function of the position in the scanning path.

Claims

1. An autostereoscopic image recorded comprising:

a single recording means for recording images and having a single optical path through a convergent point between a scene and said recording means;

a first rail transverse to said optical path and a second rail displaced from said optical path and at an angle to said first rail to define with said first rail at least one arcuate scanning path;

means for mounting said recording means to said rails whereby said optical path transverses said at least one arcuate scanning path centered at said convergent point and defined by said first and second rails; and

driving means for substantially continuously moving said recording means along said scanning path for a plurality of scanning cycles.

2. An autostereoscopic image recorder according to claim 1 including adjustment means for adjusting said convergent point.

3. An autostereoscopic image recorder according to claim 2 wherein said adjustment means moves said recording means and said path means relative to each other to adjust said convergent point.

4. An autostereoscopic image recorder according to claim 2 wherein said adjustment means includes a carriage to which are mounted said rails and said carriage is adjustably mounted to a support to adjust said convergent point.

5. An autostereoscopic image recorder according to claim 2 wherein said adjustment means rotates said second rail to adjust said convergent point.

6. An autostereoscopic image recorder according to claim 1 including yieldable bushings connecting said recording means to said rails to allow said recording means to rotate with respect to said rails.

7. An autostereoscopic image recorder according to claim 1 including a third rail parallel to and spaced along said optical path from said first rail.

8. A stereoscopic image recorder according to claim 1 including a third rail spaced along said optical path from said first rail.

9. An autostereoscopic image recorder comprising:

a single recording means for recording images and including a single optical path through a convergent point between a scene and said recording means;

path means for defining a scanning path transverse to said optical path;

a lens in said optical path to cause said optical path to converge on said convergent point during motion of said recording means; and

driving means for substantially continuously moving said recording means along said scanning path for a plurality of scanning cycles.

10. An autostereoscopic image recorder according to claim 9 wherein said path means defines a linear path orthogonal to said optical path.

11. An autostereoscopic image recorder according to claim 9 wherein said path means defines an arc centered about a first fixed point in said optical path, said optical path includes a lens to cause said optical path to intersect a second fixed point, and said convergent point is one of said first and second fixed points.

12. An autostereoscopic image recorder according to claim 11 including means for adjusting said convergent point by moving said lens and said first point relative to each other.

13. An autostereoscopic image recorder comprising:

a single recording means for recording images and including a single optical path through a convergent point between a scene and said recording means;

path means for defining a scanning path transverse to said optical path;

support means;

first and second mass means movably mounted to said support means and said first mass means being connected to said recording means; and

drive means for substantially continuously moving said first and second mass means in opposite directions and for substantially continuously moving said recording means along said scanning path for a plurality of scanning cycles.

14. An autostereoscopic image recorder according to claim 13 wherein said second mass means has substantially the mass of said first mass means plus the mass of said recording means.

15. An autostereoscopic image recorder according to claim 13 wherein said drive means includes an armature and a stator mounted to said first and second mass means.

16. An autostereoscopic image recorder according to claim 13 wherein said first and second mass means are connected to said support by pulleys.

17. An autostereoscopic image recorder comprising:

a single recording means for recording images and including a single optical path through a convergent point between a scene and said recording means;

path means for defining a scanning path transverse to said optical path;

driving means for substantially continuously moving said recording means along said scanning path for a plurality of scanning cycles; and

adjustment means for determining the distance between said recording means and a desired convergent point and adjusting said path means to maintain said optical path on said desired convergent point during scanning.

18. An autostereoscopic image recorder comprising:

a single recording means for recording images and including a single optical path through a convergent point between a scene and said recording means;

path means for defining a scanning path transverse to said optical path;

driving means for substantially continuously moving said recording means along said scanning path for a plurality of scanning cycles; and

adjustment means for determining degree of motion of images being recorded and adjusting the travel along said scanning path as a function of determined degree of motion.

19. An autostereoscopic image recorder according to claim 18 wherein said adjustment means increases the amount of travel for increased degree of motion.

20. An autostereoscopic image recorder according to claim 18 wherein said adjustment means includes correlation means for correlating successive recorded images to determine degree of motion.

21. An autostereoscopic image recorder comprising:

a single recording means for recording images and including a single optical path through a convergent point between a scene and said recording means;

path means for defining a scanning path transverse to said optical path;

driving means for substantially continuously moving said recording means along said scanning path for a plurality of scanning cycles; and

synchronization means for synchronizing said driving means to image recording of said recording means.

22. An autostereoscopic image recorder according to claim 21 wherein said synchronization means controls said driving means for bidirectional operation of said recording means.

23. An autostereoscopic image recorder comprising:

a single recording means for recording images and including a single optical path through a convergent point between a scene and said recording means;

path means for defining a scanning path transverse to said optical path;

driving means for substantially continuously moving said recording means along said scanning path for a plurality of scanning cycles; and

adjustment means for adjusting recorded images as a function of position of said recording means on said scanning path.

24. An autostereoscopic image recorder according to claim 23 wherein said adjustment means adjusts the position of a recorded image during displaying.

25. An autostereoscopic image recorder according to claim 23 wherein said adjustment means adjusts the position of an image on a recording medium during recording.