Apparatus and method for generating hologram pattern

Patent metadata

Field	Value
Publication number	US-9618902-B2
Application number	US-201313886816-A
Country	US
Kind code	B2
Filing date	May 3, 2013
Priority date	Nov 26, 2012
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

Provided is an apparatus and method for generating a hologram pattern with a reduced amount of computation. The apparatus may include a reference depth layer setting unit configured or having a capacity to set a reference depth layer using data associated with a three-dimensional (3D) object, a first hologram pattern generating unit configured to generate a first hologram pattern corresponding to the 3D object in the reference depth layer, and a second hologram pattern generating unit configured to generate a second hologram pattern in a hologram plane using the first hologram pattern.

First claim

What is claimed is:

1. An apparatus for generating a hologram pattern, the apparatus comprising:
a reference depth layer setting unit having a capacity to set a reference depth layer using data associated with a three-dimensional (3D) object, the reference depth layer setting unit setting the reference depth layer at an intermediate portion of the 3D object;
a first hologram pattern generating unit having a capacity to generate a first hologram pattern corresponding to the 3D object in the reference depth layer; and
a second hologram pattern generating unit having a capacity to generate a second hologram pattern in a hologram plane using the first hologram pattern,
wherein the reference depth layer setting unit set depth information of the reference depth layer to be one of an average value and a median value of the depth information of the points in the 3D object.

2. The apparatus of claim 1 , wherein the reference depth layer setting unit has a capacity to set depth information of the reference depth layer where a distance between the reference depth layer and a point in the 3D object is shorter than a distance between the hologram plane and the point.

3. The apparatus of claim 1 , wherein the data associated with the 3D object includes a piece of data from among color image data of the 3D object, depth image data of the 3D object, color image data corresponding to multiple views, and spatial data of the 3D object.

4. The apparatus of claim 1 , wherein the reference depth layer setting unit has a capacity to identify depth information of a point in the 3D object using the data associated with the 3D object, and to set depth information of the reference depth layer using the identified depth information of the point.

5. The apparatus of claim 1 , wherein the first hologram pattern generating unit has a capacity to generate the first hologram pattern corresponding to a point in the 3D object by duplicating a portion of the first hologram pattern.

6. The apparatus of claim 1 , wherein the second hologram pattern generating unit has a capacity to generate the second hologram pattern in the hologram plane by increasing a size of the first hologram pattern.

7. The apparatus of claim 1 , wherein the reference depth layer setting unit has a capacity to set, when the 3D object is plural, depth information of the reference depth layer where a distance between the reference depth layer and a point in the 3D objects is shorter than a distance between the hologram plane and the point.

8. A device of claim 1 , wherein the reference depth layer setting unit, the first hologram pattern generating unit and the second hologram pattern generating unit comprise a computer.

9. A method of generating a hologram pattern, the method comprising:
setting a reference depth layer using data associated with a three-dimensional (3D) object, the reference depth layer being set at an intermediate portion of the 3D object;
generating a first hologram pattern corresponding to the 3D object in the reference depth layer; and
generating a second hologram pattern in a hologram plane using the first hologram pattern,
wherein the setting of the reference depth layer comprises setting depth information of the reference depth layer to be one of an average value and a median value of the depth information of the points in the 3D object.

10. The method of claim 9 , wherein the setting of the reference depth layer comprises setting depth information of the reference depth layer where a distance between the reference depth layer and a point in the 3D object is shorter than a distance between the hologram plane and the point.

11. The method of claim 9 , wherein the data associated with the 3D object includes a piece of data among color image data of the 3D object, depth image data of the 3D object, color image data corresponding to multiple views, and spatial data of the 3D object.

12. The method of claim 9 , wherein the setting of the reference depth layer comprises:
identifying depth information of a point in the 3D object using the data associated with the 3D object; and
setting depth information of the reference depth layer using the identified depth information of the point.

13. The method of claim 9 , wherein the generating of the first hologram pattern comprises generating the first hologram pattern corresponding to a point in the 3D object by duplicating a portion of the first hologram pattern.

14. The method of claim 9 , wherein the generating of the second hologram pattern comprises generating the second hologram pattern in the hologram plane by increasing a size of the first hologram pattern.

15. The method of claim 9 , wherein the setting of the reference depth layer comprises setting, when the 3D object is plural, depth information of the reference depth layer where a distance between the reference depth layer and a point in the 3D objects is shorter than a distance between the hologram plane and the point.

16. A non-transitory computer-readable medium comprising a program for instructing a computer to perform the method of claim 9 .

17. A method, comprising
creating a hologram pattern at a hologram plane by producing a first hologram pattern of a 3D object at a reference plane and producing a second hologram pattern from the first hologram pattern at the hologram plane by translating the first hologram pattern to the hologram plane and enlarging the first hologram pattern; and
displaying a hologram using the hologram pattern using a hologram display apparatus,
wherein depth information of a reference depth layer is set at an intermediate portion of the 3D object, and
wherein the depth information of the reference plane is set to be one of an average value and a median value of the depth information of the points in the 3D object.

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Wey Ho Cheon
• Lee Seok
• Nam Dong Kyung

Classifications

• G03H2210/44

  Digital representation · CPC title

• G03H2001/0825

  Numerical processing in hologram space, e.g. combination of the CGH [computer generated hologram] with a numerical optical element · CPC title

• G03H2226/02

  Computing or processing means, e.g. digital signal processor [DSP] · CPC title

• G03H2210/13

  Coloured object · CPC title

• G03H2210/452

  into points · CPC title