Method for generating images for multi-projection theater and image management apparatus using the same

Patent metadata

Field	Value
Publication number	US-10096085-B2
Application number	US-201414560907-A
Country	US
Kind code	B2
Filing date	Dec 4, 2014
Priority date	Dec 9, 2013
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

Disclosed herein is a method of generating images for a multi-projection theater and a method of generating projection images for a multi-projection theater, wherein a source image is mapped to a sphere, virtual planes according to the structure of a multi-projection theater are generated, and the source image on the sphere is projected on the virtual planes. The method may include mapping a source image to a sphere, generating a virtual plane according to the structure of a theater, and projecting the image on the sphere on the virtual plane.

First claim

What is claimed is:

1. A method of generating an image, the method performed by an image management apparatus having a controller, a communication unit, an image generation unit, and a database unit, the method comprising:
mapping, by the image generation unit, a source image to a sphere;
generating, by the image generation unit, a plurality of virtual planes according to a structure of a theater, the theater comprising a plurality of projection surfaces;
projecting, by the image generation unit, the mapped source image on the plurality of the virtual planes;
generating, by the image generation unit, a plurality of projection images to be projected on the plurality of the projection surfaces based on the projected mapped image on the plurality of the virtual planes; and
sending, by the controller, the plurality of projection images to the theater through the communication unit,
wherein the plurality of the virtual planes is generated based on a structural data of the theater stored in the database unit,
wherein the source image comprises a plurality of pixels represented on a planar coordinate system using a horizontal angle value and a vertical angle value as parameters, and
wherein each pixel of the plurality of pixels is mapped to a location corresponding to its horizontal angle value and vertical angle value around a center of the sphere.

2. The method of claim 1 , wherein the each pixel comprises the horizontal angle value belonging to a range of −180 degrees to 180 degrees and the vertical angle value belonging to a range of −90 degrees to 90 degrees.

3. The method of claim 1 , wherein
the plurality of the virtual planes is generated based on a reference point of the theater, and
when the reference point of the theater is matched with the center of the sphere, the mapped source image is projected on the plurality of the virtual planes.

4. The method of claim 1 , wherein the projecting the mapped image comprises:
calculating, for a pixel in the mapped source image, a location of the pixel on the plurality of the virtual planes based on 3D location information of the pixel from the center of the sphere or angle of the pixel from the center of the sphere; and
projecting the pixel on the calculated location of the plurality of the virtual planes.

5. A non-transitory computer readable recording medium recording a computer program for causing a computer to execute a method for generating an image, the computer having a controller, a communication unit, an image generation unit, and a database unit, the method comprising:
mapping, by the image generation unit, a source image to a sphere;
generating, by the image generation unit, a plurality of virtual planes according to a structure of a theater, the theater comprising a plurality of projection surfaces;
projecting, by the image generation unit, the mapped source image on the plurality of the virtual planes;
generating, by the image generation unit, a plurality of projection images to be projected on the plurality of the projection surfaces based on the projected mapped image on the plurality of the virtual planes; and
sending, by the controller, the plurality of projection images to the theater through the communication unit,
wherein the plurality of the virtual planes is generated based on a structural data of the theater stored in the database unit,
wherein the source image comprises a plurality of pixels represented on a planar coordinate system using a horizontal angle value and a vertical angle value as parameters, and
wherein each pixel of the plurality of pixels is mapped to a location corresponding to its horizontal angle value and vertical angle value around a center of the sphere.

6. An image management apparatus for managing an image to be projected on a theater, comprising:
an image generation unit configured to
map a source image to a sphere,
generate a plurality of virtual planes according to a structure of a theater comprising a plurality of projection surfaces, and
generate a plurality of projection images to be projected on the plurality of the projection surfaces by projecting the mapped source image on the plurality of the virtual planes,

wherein the plurality of the virtual planes is generated based on a structural data of the theater,
wherein the source image comprises a plurality of pixels represented on a planar coordinate system using a horizontal angle value and a vertical angle value as parameters, and
wherein each pixel of the plurality of pixels is mapped to a location corresponding to its horizontal angle value and vertical angle value around a center of the sphere.

7. The image management apparatus of claim 6 , wherein the image generation unit is configured to
generate the plurality of the virtual planes based on a reference point of the theater and
when the reference point of the theater is matched with the center of the sphere, project the mapped source image on the plurality of the virtual planes.

8. The image management apparatus of claim 6 , wherein the image generation unit is configured to
calculate, for a pixel in the mapped source image, a location of the pixel on the plurality of the virtual planes based on 3D location information of the pixel from the center of the sphere or angle of the pixel from the center of the sphere, and
project the pixel on the calculated location of the plurality of the virtual planes.

9. The image management apparatus of claim 6 , further comprising:
a database unit configured to store the structural data of the theater.

10. The image management apparatus of claim 6 , further comprising:
a communication unit configured to send data to a plurality of theaters,
wherein the image generation unit is configured to
generate each plurality of virtual planes for each of the plurality of the theaters,
generate each plurality of images to be projected on the each of the plurality of the theaters, and
send the generated each plurality of images to the each of the plurality of the theaters using the communication unit.

Assignees

• Cj Cgv Co Ltd

Inventors

• Kim Hwan Chul
• Kang Su Ryeon
• Kang Jihyung

Classifications

• H04N9/3185

  Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14) · CPC title

• H04N9/3147

  Multi-projection systems (video walls G06F3/1446) · CPC title

• G06T3/005 Primary

  Physics · mapped topic

• G06T3/08 Primary

  Projecting images onto non-planar surfaces, e.g. geodetic screens · CPC title