Image display system

• US 6,262,694 B1
• Filed: 10/22/1997
• Issued: 07/17/2001
• Est. Priority Date: 03/11/1997
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Ishimoto, Manabu, Iwata, Satoshi, Aritake, Hirokazu, Nakashima, Masato, Matsuda, Takahiro
• Primary Examiner(s): Shankar, Vijay
• Application Number:
  US08/955,599
• Time in Patent Office: 1,364 Days
• Field of Search: 348/39, 348/51, 348/52, 348/139, 348/140, 345/1-7, 345/8, 345/9, 345/420, 345/421, 345/426
• US Class Current: 345/1.1
• CPC Class Codes: H04N 13/10 Processing, recording or transmission of stereoscopic or multi-view image signals
• CPC Class Codes: H04N 13/189 Recording image signals; Reproducing recorded image signals
• CPC Class Codes: H04N 13/194 Transmission of image signals
• CPC Class Codes: H04N 13/239 using two 2D image sensors having a relative position equal to or related to the interocular distance H04N13/243 takes precedence
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388
• CPC Class Codes: H04N 13/395 with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes
• CPC Class Codes: H04N 2013/0081 Depth or disparity estimation from stereoscopic image signals
• CPC Class Codes: H04N 2013/0096 Synchronisation or controlling aspects

Abstract

An image display system includes an image dividing unit for dividing an input image into a plurality of images based on varying distances from an image pickup position, and a plurality of display units, successively arranged at different distances from an observation position, for displaying the plurality of images divided in the image dividing unit, where the plurality of images divided in the image dividing unit are displayed on corresponding display units of the plurality of display units corresponding to the distances from the image pickup position.

Claims

1. An image display system, comprising:

image dividing means for dividing an input image into a plurality of images based on varying distances of portions of the input image from an image pickup position; and

a plurality of display means, each successively arranged at different distances from an adjacent one of said plurality of display means, for displaying the plurality of images divided in said image dividing means, the plurality of images divided by said image dividing means being displayed on a corresponding display means of said plurality of display means corresponding to the distances from the image pickup position.

2. An image display system as recited in claim 1, wherein adjacent display means of said plurality of display means are successively set at intervals proportional to the distances from the observation position.

3. An image display system as recited in claim 2, wherein the adjacent display means of said plurality of display means are set at the intervals proportional to squares of the distances from the observation position.

4. An image display system as recited in any of claims 1 to 3, wherein said plurality of display means include pixel pitches being set proportional to the distances from the observation position.

5. An image display system as recited in any of claims 1 to 3, wherein said plurality of display means include a projector projecting the plurality of images, and diffusing means for diffusing light output from said projector.

6. An image display system as recited in claim 5, wherein said diffusing means comprises:

transmitting and diffusing means which can switch said diffusing means between diffusing and transmitting states; and

switch control means for successively switching said transmitting and diffusing means to the diffusing state.

7. An image display system as recited in claim 6, wherein said switch control means successively switches to the diffusing state a predetermined number of consecutive display means of said plurality of display means having display images which do not overlap when an observation is made from the observation position.

11. An image display system as recited in any of claims 1 to 3, wherein said image dividing means divides the input image based on ranges of distances corresponding to display positions of the plurality of display means.

12. An image display system as recited in any of claims 1 to 3, further comprising:

first image input means for picking up an image;

second image input means, arranged at a predetermined interval from said first image input means, for picking up the image; and

parallax detection means for detecting a parallax from the image picked up by at least one of said first image input means and said second image input means,

wherein said image dividing means divides the input image into the plurality of images based on the parallax detected by said parallax detection means.

8. An image display system, comprising:

image dividing means for dividing an input image into a plurality of images based on varying distances of portions of the input image from an image pickup position; and

a plurality of display means, each successively arranged at different distances from an adjacent one of said plurality of display means, for displaying the plurality of images divided in said image dividing means, the plurality of images divided by said image dividing means being displayed on a corresponding display means of said plurality of display means corresponding to the distances from the image pickup position,

wherein said plurality of display means include a projector projecting the plurality of images, and diffusing means for diffusing light output from said projector,

wherein said projector projects the plurality of images with luminances of image portions overlapping portions of adjacent display means of said plurality of display means being set higher than luminance of image portions which do not overlap.

9. An image display system as recited in claim 8, wherein said diffusing means comprises:

transmitting and diffusing means which can switch said diffusing means between diffusing and transmitting states; and

switch control means for successively switching said transmitting and diffusing means to the diffusing state

wherein said projector projects the plurality of images with luminance of image portions overlapping portions of adjacent display means of said plurality of display means beings set higher than luminance of image portions which do not overlap.

10. An image display system as recited in claim 9, wherein said switch control means successively switches to the diffusing state a predetermined number of consecutive display means of said plurality of display means having display images which do not overlap when an observation is made from the observation position.

wherein said projector projects the plurality of images with luminance of image portions overlapping portions of adjacent display means of said plurality of display means being set higher than luminance of image portions which do not overlap.

13. An image display system, comprising;

an image dividing device dividing an input image into a plurality of images based on successively longer distances from an image pickup position attributed to portions of the input image; and

a plurality of display units, each positioned at successively longer distances from an adjacent one of said plurality of display units, the plurality of display units at the respective successively longer distances from the observation point correspondingly displaying the plurality of images at the respective successively longer distances from the image pickup position.

14. An image display system as recited in claim 13, wherein said plurality of display units are positioned at the successively longer distances based on minimum successive distances corresponding to a depth resolving power at each position of said plurality of display units.

16. An image display system as recited in claim 13, wherein said plurality of display units include successively coarser image resolutions based on the successively longer distances of the plurality of display units.

17. An image display system as recited in claim 13,

wherein said plurality of display units include diffusing and transmitting states, and a switching control to switch said plurality of display units between the diffusing and transmitting states, and

wherein the switching control successively switches a predetermined number of consecutive display units of said plurality of display units, which do not have overlapping images when viewed from the observation position, to a diffusing state.

19. An image display system as recited in claim 13, further comprising:

a first image input device for picking up an image;

a second image input device, arranged at a predetermined interval from said first image input means, for picking up the image; and

parallax detection means for detecting a parallax from the image picked up by at least one of said first image input means and said second image input means,

wherein said image dividing device divides the input image into the plurality of images based on the parallax detected by said parallax detection means.

15. An image display system, comprising:

an image dividing device dividing an input image into a plurality of images based on successively longer distances from an image pickup position attributed to portions of the input image; and

a plurality of display units, each positioned at successively longer distances from an adjacent one of said plurality of display units, the plurality of display units at the respective successively longer distances from the observation point correspondingly displaying the plurality of images at the respective successively longer distances from the image pickup position,

wherein said plurality of display units are positioned at the successively longer distances based on minimum successive distances corresponding to a depth resolving power at each position of said plurality of display units, the depth resolving power being defied to be AD^K, where A is 1.34×

10<sup>−

3</sup>, D is the distance from the observation point to the position for one of the plurality of display units, and K=2.19.

18. An image display system, comprising:

an image dividing device dividing an input image into a plurality of images based on successively longer distances from an image pickup position attributed to portions of the input image; and

a plurality of display units, each positioned at successively longer distances from an adjacent one of said plurality of display units, the plurality of display units at the respective successively longer distances from the observation point correspondingly displaying the plurality of images at the respective successively longer distances from the image pickup position,

wherein said plurality of display units display the plurality of images with luminances of overlapping portions of images across adjacent display units being set higher than luminances of portion of images which do not overlap.

20. An image display system comprising:

an image dividing unit dividing an input image into a plurality of rectangular images which are elongated in a horizontal direction based on varying distances of portions of the input image from an image pickup position; and

a plurality of display units, each successively arranged at different distances from an adjacent one of said plurality of display units, displaying the plurality of images divided in said image dividing unit,

the plurality of images divided by said image dividing unit being displayed on a corresponding display unit of said plurality of display units corresponding to the distances from the image pickup position.

21. The image display system as claimed in claim 20, wherein said image dividing unit divides the input image into a plurality of rectangular images having different lengths in a vertical direction depending on the varying distances of the portions of the input image from the image pickup position.