Method of controlling view of stereoscopic image and stereoscopic image display using the same

Patent metadata

Field	Value
Publication number	US-8970681-B2
Application number	US-58066809-A
Country	US
Kind code	B2
Filing date	Oct 16, 2009
Priority date	Jan 7, 2009
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

A method of controlling a view of a stereoscopic image and a stereoscopic image display using the same are disclosed. The method of controlling a view of a stereoscopic image includes: detecting a position information of a viewer from an output of a sensor; changing parameters for rendering a viewing angle and a depth information according to the position information; generating a left-eye image and a right-eye image in which a viewing angle and a depth information are changed in accordance with the parameters; and displaying the left-eye image and the right-eye image on a stereoscopic image display.

First claim

What is claimed is:

1. A method of controlling a view of a stereoscopic image, the method comprising:
detecting a position information of a viewer from an output of a sensor;
changing parameters for rendering a viewing angle and a depth information according to the position information;
generating a left-eye image and a right-eye image in which a viewing angle and a depth information are changed in accordance with the parameters; and
displaying the left-eye image and the right-eye image on a stereoscopic image display,
wherein the detecting of the position information comprises:
determining whether or not a viewer's position information calculated in a previous frame exists in a current frame,
setting a detection range of a face of the viewer to a vicinity of the position information calculated in the previous frame if the position information calculated in the previous frame exists in the current frame,
setting the detection range of the face of the viewer to an entire area of the current frame if the position information calculated in the previous frame does not exist in the current frame, and
recognizing a region containing color similar to a skin color of the viewer from the output of the sensor as the face of the viewer if the viewer's face is not detected in the detection range,

wherein the sensor includes at least one of an image sensor and an optical sensor for sensing light of a specific wavelength, and
wherein the sensor senses light received from a pair of light emitting devices, each of the pair of light emitting devices being installed on a respective arm of glasses that the viewer wears.

2. The method of claim 1 , wherein the detecting of the position information comprises detecting the position information by calculating three-dimensional position information for a face of the viewer based on the output of the sensor.

3. The method of claim 2 , wherein the changing of the parameters comprises changing the parameters in accordance with the three-dimensional position information of the face of the viewer.

4. The method of claim 1 , wherein the generating of the left-eye image and the right-eye image comprises generating the left-eye image and the right-eye image while changing positions of a left-eye camera and a right-eye camera, which view a same 3D (three-dimensional) object at a position spaced apart by a distance between both eyes of the viewer, in accordance with the parameters.

5. The method of claim 1 , wherein:
the pair of light emitting devices comprises a first light emitting device and a second light emitting device; and
a width between the first and second light emitting devices is calculated according to the following equation:
DW =√{square root over (( DP 1 .X−DP 2 .X ) 2 +( DP 1 .Y−DP 2 .Y ) 2 )}{square root over (( DP 1 .X−DP 2 .X ) 2 +( DP 1 .Y−DP 2 .Y ) 2 )},

where DW is the width between the first and second light emitting devices, DP 1 .X is an x-axis position of the first light emitting device, DP 2 .X is an x-axis position of the second light emitting device, DP 1 .Y is a y-axis position of the first light emitting device, and DP 2 .Y is a y-axis position of the second light emitting device.

6. The method of claim 5 , wherein:
a coordinate value of a center point of the face of the viewer on the x-axis is calculated according to the following equation:

DC
.
X

=

DP
⁢

⁢
1.
⁢
X

+

DP
⁢

⁢
2.
⁢
X

2

;

and
a coordinate value of a center point of the face of the viewer on the y-axis is calculated according to the following equation:

DC
.
Y

=

DP
⁢

⁢
1.
⁢
Y

+

DP
⁢

⁢
2.
⁢
Y

2

,

where DC.X is coordinate value of a center point of the face of the viewer on the x-axis, and DC.Y is coordinate value of a center point of the face of the viewer on the y-axis.

7. The method of claim 6 , wherein a distance of the face of the viewer from the stereoscopic image display is calculated according to the following equations:

RPP
IR

=

π
360

·
θ
·
IRW

Dist
=

(

FW
2

)

tan
⁡

(

RPP
IR

·

DW
2

)

,

where RPP IR represents Radians per pixel, IRW represents a horizontal length of an output of the sensor, Dist represents the distance of the face of the viewer from the stereoscopic image display, θ is an angle from which the viewer views the stereoscopic image, and FW is a width of the face of the viewer.

8. The method of claim 7 , wherein:
a position of the face of the viewer face on the x-axis is calculated according to the following equation:

FaceX
=

sin
⁡

(

RPP
IR

Assignees

• Son Hyeonho
• Lim Moojong
• Jung Hoyoung
• Lg Display Co Ltd

Inventors

• Son Hyeonho
• Lim Moojong
• Jung Hoyoung

Classifications

• H04N13/279

  the virtual viewpoint locations being selected by the viewers or determined by tracking · CPC title

• G06F3/012 Primary

  Head tracking input arrangements · CPC title

• H04N13/0278

  Electricity · mapped topic