MULTI-VIEWPOINT IMAGE RECORDING MEDIUM AND AUTHENTICITY JUDGMENT METHOD

• US 20120008822A1
• Filed: 06/14/2011
• Published: 01/12/2012
• Est. Priority Date: 07/08/2010
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.), Sony DADC Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Shirakura, Akira, Matsubara, Takashi
• Application Number:
  US13/159,611
• Publication Number:
  US 20120008822A1
• Time in Patent Office: Days
• US Class Current: 382/100
• CPC Class Codes: G03H 1/0011 for security or authentication holograms on information-bearing cards B42D25/328; testing papers with holograms G07D7/0032
• CPC Class Codes: G03H 1/0248 Volume holograms
• CPC Class Codes: G03H 1/22 Processes or apparatus for obtaining an optical image from holograms G03H1/26 - G03H1/34 take precedence
• CPC Class Codes: G03H 1/265 Angle multiplexing; Multichannel holograms G03H1/268 takes precedence
• CPC Class Codes: G03H 2001/0016 Covert holograms or holobjects requiring additional knowledge to be perceived, e.g. holobject reconstructed only under IR illumination microholograms G03H2230/10
• CPC Class Codes: G03H 2001/0421 Parallax aspect
• CPC Class Codes: G03H 2001/221 Element having optical power, e.g. field lens
• CPC Class Codes: G03H 2001/2223 Particular relationship between light source, hologram and observer
• CPC Class Codes: G03H 2210/52 Alphanumerical
• CPC Class Codes: G03H 2210/55 Having particular size, e.g. irresolvable by the eye
• CPC Class Codes: G03H 2210/62 Moving object
• CPC Class Codes: G03H 2223/19 Microoptic array, e.g. lens array
• CPC Class Codes: G03H 2230/10 Microhologram not registered to the substrate

Abstract

A multi-viewpoint image recording medium includes at least one main image recorded on the multi-viewpoint image recording medium and a plurality of sub-images, each having a display area smaller than a display area of the main image, recorded on the multi-viewpoint image recording medium. The main image and the plurality of sub-images are simultaneously displayed when the main image and the plurality of sub-images are reproduced. At least one of the plurality of sub-images changes in accordance with movement of a viewpoint.

Claims

1. A multi-viewpoint image recording medium comprising:

at least one main image recorded on the multi-viewpoint image recording medium; and

a plurality of sub-images, each having a display area smaller than a display area of the main image, recorded on the multi-viewpoint image recording medium,

wherein the main image and the plurality of sub-images are simultaneously displayed when the main image and the plurality of sub-images are reproduced, and

wherein at least one of the plurality of sub-images changes in accordance with movement of a viewpoint.

2. The multi-viewpoint image recording medium according to claim 1,

wherein the plurality of sub-images are displayed in a region defined by the main image.

3. The multi-viewpoint image recording medium according to claim 1,

wherein the display area of each of the plurality of sub-images is 50 mm² or less, or one tenth or less of the display area of the main image.

4. The multi-viewpoint image recording medium according to claim 1,

wherein the change is a continuous change, and

wherein the continuous change is rotation around an axis that is substantially vertical to a recording surface.

5. The multi-viewpoint image recording medium according to claim 1,

wherein the change is a continuous change, and

wherein the continuous change is rotation around an axis including a recording surface.

6. The multi-viewpoint image recording medium according to claim 1,

wherein the change is a continuous change, and

wherein the continuous change is a continuous change of brightness when at least one of the plurality of sub-images is observed.

7. The multi-viewpoint image recording medium according to claim 1,

wherein the change is a continuous change, and

wherein the continuous change is a continuous change of a display position of at least one of the plurality of sub-images.

8. The multi-viewpoint image recording medium according to claim 1,

wherein the change is a continuous change, and

wherein the continuous change is a continuous change of a shape of at least one of the plurality of sub-images.

9. The multi-viewpoint image recording medium according to claim 1,

wherein the change is a continuous change, and

wherein the continuous change is a continuous change of a thickness of a line of at least one of the plurality of sub-images.

10. The multi-viewpoint image recording medium according to claim 1,

wherein the change includes a change in which at least one of the plurality of sub-images disappears.

11. The multi-viewpoint image recording medium according to claim 1,

wherein the main image and the plurality of sub-images are produced on the basis of a holographic stereogram.

12. The multi-viewpoint image recording medium according to claim 1,

wherein the main image and the plurality of sub-images are produced on the basis of a computer generated hologram.

13. The multi-viewpoint image recording medium according to claim 1,

wherein the main image and the plurality of sub-images are observed via a microlens array.

14. The multi-viewpoint image recording medium according to claim 1,

wherein at least one of the plurality of sub-images moving in accordance with movement of a viewpoint is replicated from a sub-image added to each surface of a multi-surface master.

15. The multi-viewpoint image recording medium according to claim 1,

wherein at least one of amounts characterizing a continuous change of at least one of the plurality of sub-images is determined thorough specific association.

16. The multi-viewpoint image recording medium according to claim 1, further comprising:

identification information recorded on the multi-viewpoint image recording medium,

wherein at least one of amounts characterizing a continuous change of at least one of the plurality of sub-images is determined through specific association on the basis of the identification information.

17. An authenticity judgment method for performing authenticity judgment on a multi-viewpoint image recording medium which includes identification information recorded on the multi-viewpoint image recording medium, at least one main image recorded on the multi-viewpoint image recording medium, and a plurality of sub-images, each having a display area smaller than a display area of the main image, recorded on the multi-viewpoint image recording medium, the main image and the plurality of sub-images being simultaneously displayed when the main image and the plurality of sub-images are reproduced, at least one of the plurality of sub-images changing in accordance with movement of a viewpoint, the authenticity judgment method comprising:

preparing a database in which the identification information and an amount characterizing a change of at least one of the plurality of sub-images are registered in association with each other; and

inquiring of the database about the identification information and the amount characterizing a change of at least one of the plurality of sub-images.