Method for displaying 3D image and device for same

Patent metadata

Field	Value
Publication number	US-10531066-B2
Application number	US-201515741144-A
Country	US
Kind code	B2
Filing date	Dec 21, 2015
Priority date	Jun 30, 2015
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

Provided is a device including a camera configured to capture an image of eyes of a user who is watching three-dimensional (3D) video; and a processor configured to obtain an eye feature of the user from the captured image of the eyes of the user, determine a degree of eyestrain degree of the user based on the obtained eye feature, and adjust a parallax of the 3D video according to the degree of eyestrain of the user.

First claim

The invention claimed is:

1. A device comprising:
an image sensor to capture an image of eyes of a user who is watching three-dimensional (3D) video; and
a processor configured to:
obtain an eye feature of the user from the captured image of the eyes of the user,
determine a current degree of eyestrain of the user based on the obtained eye feature, and adjust a parallax of the 3D video according to the current degree of eyestrain of the user,
wherein the processor is further configured to:
dynamically determine a parallax threshold based on the current degree of eyestrain,
determine whether the parallax of the 3D video is equal to or greater than the parallax threshold and, when the parallax of the 3D video is equal to or greater than the parallax threshold, adjust a parallax of the 3D video to be less than the parallax threshold.

2. The device of claim 1 , wherein the processor adjusts the parallax of the 3D video by adjusting at least one of a mean parallax between a left eye image and a right eye image of the 3D video, a maximum value of a negative parallax between the left and right eye images, a maximum value of a positive parallax between the left and right eye images, and a parallax range that is a difference between the maximum value of the negative parallax and the maximum value of the positive parallax.

3. The device of claim 1 , wherein the eye feature of the user comprises at least one of a blinking frequency, an eye-closed time, a change in binocular focus points, and a binocular convergence angle.

4. The device of claim 1 , wherein, when the determined current degree of eyestrain of the user is equal to or greater than an eyestrain threshold, the processor adjusts the parallax of the 3D video.

5. The device of claim 1 , wherein the processor adjusts the parallax of the 3D video by adjusting a change rate of a parallax between frames of the 3D video.

6. The device of claim 5 , wherein the processor determines a difference between parallaxes of an n-th frame and an (n−1)th frame of the 3D video, and, when the difference between the parallaxes is equal to or greater than a third threshold, the processor adjusts the parallax of the n-th frame such that the difference between the parallaxes is less than the third threshold, to thereby adjust the change rate of the parallax between the frames of the 3D video.

7. The device of claim 6 , wherein the processor increases the parallax of the n-th frame such that the difference between the parallaxes is less than the third threshold, to thereby adjust the change rate of the parallax between the frames of the 3D video.

8. The device of claim 1 , further comprising an output interface,
wherein the processor controls the output interface to output, to the user, a parallax-adjusted 3D video obtained by adjusting the parallax of the 3D video.

9. The device of claim 8 , wherein the device displays, on the output interface, a notification window indicating that the parallax of the 3D video has been adjusted.

10. A method of adjusting a three-dimensional (3D) display effect, the method comprising:
capturing an image of eyes of a user who is watching 3D video;
obtaining an eye feature of the user from an image of the captured image of the eyes of the user;
determining a current degree of eyestrain of the user, based on the obtained eye feature; and
adjusting a parallax of the 3D video according to the current degree of eyestrain of the user,
wherein adjusting of the parallax of the 3D video comprises:
dynamically determining a parallax threshold based on the current degree of eyestrain,
determining whether the parallax of the 3D video is equal to or greater than the parallax threshold, and, when the parallax of the 3D video is equal to or greater than the parallax threshold, adjusting a parallax of the 3D video to be less than the parallax threshold.

11. The method of claim 10 , wherein the adjusting of the parallax of the 3D video according to the current degree of eyestrain of the user comprises adjusting at least one of a mean parallax between a left eye image and a right eye image of the 3D video, a maximum value of a negative parallax between the left and right eye images, a maximum value of a positive parallax between the left and right eye images, and a parallax range that is a difference between the maximum value of the negative parallax and the maximum value of the positive parallax.

12. The method of claim 10 , wherein the eye feature of the user comprises at least one of a blinking frequency, an eye-closed time, a change in binocular focus points, and a binocular convergence angle.

13. The method of claim 10 , wherein the adjusting of the parallax of the 3D video according to the current degree of eyestrain of the user comprises, when the determined current degree of eyestrain of the user is equal to or greater than a first threshold, adjusting the parallax of the 3D video.

14. The method of claim 10 , wherein the adjusting of the parallax of the 3D video according to the current degree of eyestrain of the user comprises adjusting the parallax of the 3D video by adjusting a change rate of a parallax between frames of the 3D video.

15. The method of claim 14 , wherein the adjusting of the parallax of the 3D video by adjusting the change rate of the parallax between frames of the 3D video comprises determining a difference between parallaxes of an n-th frame and an (n−1)th frame of the 3D video, and, when the difference between the parallaxes is equal to or greater than a third threshold, adjusting the parallax of the n-th frame such that the difference between the parallaxes is less than the third threshold, to thereby adjust the change rate of the parallax between the frames of the 3D video.

16. The method of claim 15 , wherein the adjusting of the parallax of the n-th frame such that the difference between the parallaxes is less than the third threshold comprises increasing the parallax of the n-th frame such that the difference between the parallaxes is less than the third threshold, to thereby adjust the change rate of the parallax between the frames of the 3D video.

17. The method of claim 10 , further comprising outputting, to the user, a parallax-adjusted 3D video obtained by adjusting the parallax of the 3D video.

18. The method of claim 17 , further comprising displaying a notification window indicating that the parallax of the 3D video has been adjusted.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Sun Zengzeng
• Qiao Penghui
• Hu Bing
• Zeng Yuan
• Gao Wei

Classifications

• H04N13/144 Primary

  for flicker reduction · CPC title

• H04N13/398

  Synchronisation thereof; Control thereof · CPC title

• H04N13/383

  for tracking with gaze detection, i.e. detecting the lines of sight of the viewer's eyes · CPC title

• H04N2213/002

  Eyestrain reduction by processing stereoscopic signals or controlling stereoscopic devices · CPC title

• H04N13/128 Primary

  Adjusting depth or disparity · CPC title