Apparatus, method and medium displaying image according to position of user

• US 20070176914A1
• Filed: 01/26/2007
• Published: 08/02/2007
• Est. Priority Date: 01/27/2006
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Bae, Soo-hyun, Ryu, Hee-seob, Lee, Yong-beom
• Application Number:
  US11/698,204
• Publication Number:
  US 20070176914A1
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: H04N 13/366 using viewer tracking
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

An apparatus, method, and medium displaying an input image according to a position of a user, extracting a position vector of the user and warping the image input to both eyes of the user according to the extracted position vector in order to provide a stereoscopic image that is not perceived as warped by the user. The apparatus for displaying an input image according to the position of a user includes a position sensing unit to sense the position of the user, a change measurement unit to measure an amount of change in position of the user, and an image correction unit to correct the input image when the amount of change meets a predetermined threshold value.

Claims

1. An apparatus to display an input image according to a position of a user, the apparatus comprising:

at least one position sensing unit to sense the position of the user;

a change measurement unit to measure an amount of change in position of the user; and

an image correction unit to correct the input image when the amount of change meets a predetermined threshold value.

2. The apparatus of claim 1, wherein the change measurement unit measures the distance from the user to the image displaying apparatus and amounts of vertical and horizontal movements of the user.

3. The apparatus of claim 1, wherein the image correction unit comprises:

a warping matrix generator to generate a warping matrix according to the amount of change; and

a warping performer to warp a binocular image included in the input image using the warping matrix.

4. The apparatus of claim 3, wherein the warping performer extracts a warping matrix corresponding to the amount of change among warping matrices stored in a storage unit and warps the binocular image using the extracted warping matrix.

5. The apparatus of claim 4, further comprising a warping matrix extractor to extract the warping matrix from the storage unit corresponding to the amount of change.

6. The apparatus of claim 3, further comprising a storage unit to store the warping matrix corresponding to the amount of change.

7. The apparatus of claim 1, further comprising a stereoscopic optical unit to convert the displayed image into a three-dimensional (3D) stereoscopic image.

8. The apparatus of claim 7, wherein the stereoscopic optical unit converts the displayed image into the 3D stereoscopic image using at least one of a parallax barrier operation, a lenticular operation, a polarization operation, and a time division operation.

9. The apparatus of claim 1, further comprising a display unit to display the corrected image.

10. A method of displaying an input image according to a position of a user, the method comprising:

sensing the position of the user;

measuring an amount of change in position of the user; and

correcting the input image when the amount of change meets a predetermined threshold value.

11. The method of claim 10, wherein the measuring of the amount of change comprises measuring a distance from the user to an image displaying apparatus and amounts of vertical and horizontal movements of the user.

12. The method of claim 10, wherein the correcting of the input image comprises:

generating a warping matrix according to the amount of change; and

warping a binocular image of the input image using the warping matrix.

13. The method of claim 12, wherein the warping of the binocular image comprises extracting a warping matrix corresponding to the amount of change among predetermined warping matrices and warping the binocular image using the extracted warping matrix.

14. The method of claim 13, further comprising extracting the predetermined warping matrix corresponding to the amount of change.

15. The method of claim 12, further comprising storing the predetermined warping matrix corresponding to the amount of change.

16. The method of claim 10, further comprising converting the displayed image into a 3D stereoscopic image.

17. The method of claim 16, wherein the converting of the displayed image comprises converting the displayed image into the 3D stereoscopic image using at least one of a parallax barrier operation, a lenticular operation, a polarization operation, and a time division operation.

18. The method of claim 10, further comprising displaying the corrected image.

19. At least one medium comprising computer readable code to control at least one processing element to implement the method of claim 10.

20. An apparatus to correct an image according to a position of a user, the apparatus comprising:

a change measurement unit to measure an amount of position change in the position of the user and a direction of the position change;

a warping matrix generator to generate a warping matrix according to the amount and the direction of the position change of the user, the warping matrix comprising a series of vectors for shifting points on the image according to the amount and the direction of the position change of the user; and

a warping performer to warp the image using the warping matrix if the amount of position change of the user meets a predetermined threshold.