ELECTRONIC DEVICE FOR MEASURING ANGLE OF FACE AND ROTATING SCREEN THEREOF AND METHOD THEREOF

• US 20130234927A1
• Filed: 11/21/2012
• Published: 09/12/2013
• Est. Priority Date: 03/08/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Roh, Young-Gil
• Granted Patent: US 9,671,861 B2
• Time in Patent Office: Days
• US Class Current: 345/156
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 2200/1614 Image rotation following screen orientation, e.g. switching from landscape to portrait mode
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06F 3/012 Head tracking input arrangements
• CPC Class Codes: G06V 10/242 by image rotation, e.g. by 90 degrees
• CPC Class Codes: G06V 40/161 Detection; Localisation; Normalisation
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2340/0492 Change of orientation of the displayed image, e.g. upside-down, mirrored

Abstract

An electronic device is configured to measure an angle of a user'"'"'s face and rotate a screen thereof. In a method, the electronic device verifies that a face of a user is included in photographed image information, recognizes the face of the user included in the image information, and rotates a screen of the electronic device according to an angle of the recognized face.

Claims

1. An operation method of an electronic device, the operation method comprising:

verifying that a face of a user is included in photographed image information;

recognizing the face of the user included in the image information; and

rotating a screen of the electronic device according to an angle of the recognized face.

2. The operation method of claim 1, further comprising:

displaying a message about whether a smart rotation function is set;

allowing the user to select a certain region included in the message; and

verifying, that the smart rotation function is set.

3. The operation method of claim 2, further comprising verifying that the smart rotation function is set and stopping operations of a gyro sensor and an acceleration sensor.

4. The operation method of claim 1, further comprising:

verifying that a smart rotation function is set; and

photographing an image in a predetermined direction at intervals of a predetermined time.

5. The operation method of claim 2, wherein the smart rotation function is a function for rotating the screen of the electronic device, such that the user watches the screen thereof straight.

6. The operation method set forth claim 3, wherein the smart rotation function is a function for rotating the screen of the electronic device, such that the user watches the screen thereof straight.

7. The operation method of claim 1, wherein the recognition of the face of the user included in the image information comprises verifying positions of eyes, the nose, and the mouth of the user.

8. The operation method of claim 1, wherein the rotation of the screen of the electronic device according to the angle of the recognized face comprises:

setting, a center of the screen to the origin and setting plane coordinates of an X axis and an Y axis;

classifying the plane coordinates into first to fourth predetermined regions;

taking a central coordinate of a line segment which connects both end points of lips of the recognized face as a starting point, taking a central coordinate of a line segment which connects two eyes of the recognized face to an end point, and displaying a virtual arrow in a direction from the starting point to the end point; and

rotating the screen of the electronic device according to a direction of the arrow.

9. The operation method of claim 8, wherein the rotation of the screen of the electronic device according to the direction of the arrow comprises:

determining, whether the direction of the arrow is included in any region of the first to fourth regions in the plane coordinates; and

not rotating the screen when the direction of the arrow is included in the first region of the first to fourth regions, rotating the screen to the left at 90 degrees when the direction of the arrow is included in the second region, rotating the screen to the right at 90 degrees when the direction of the arrow is included in the third region, and rotating the screen to the right or left at 180 degrees when the direction of the arrow is included in the fourth region.

10. The operation method of claim 8, wherein the first region is a region from plus 45 degrees to plus 135 degrees or less using the X axis of the plane coordinates as an initial line, the second region is a region to plus 45 degrees or less and a region to minus 45 degrees or less using the X axis of the plane coordinates as the initial line, the third region is a region from plus 135 degrees to plus 225 degrees or less or from minus 135 degrees to minus 225 degrees or less using the X axis of the plane coordinates as the initial line, and the fourth region is a region from minus 45 degrees to minus 135 degrees or less using the X axis of the plane coordinates as the initial line.

17. The electronic device of claim 10, wherein the memory includes a face recognition module configured to verify positions of eyes, the nose, and the mouth of the user.

18. The electronic device of claim 10, wherein the processor unit is configured to set a center of the screen to the origin, set plane coordinates of an X axis and an Y axis, classify the plane coordinates into first to fourth predetermined regions, take a central coordinate of a line segment which connects both end points of lips of the recognized face as a starting point, take a central coordinate of a line segment which connects two eyes of the recognized face to an end point, display a virtual arrow in a direction from the starting point to the end point, and rotate the screen of the electronic device according to a direction of the arrow.

19. The electronic device of claim 18, wherein the processor unit is configured to determine whether the direction of the arrow is included in any region of the first to fourth regions in the plane coordinates, and not rotate the screen when the direction of the arrow is included in the first region of the first to fourth regions, rotate the screen to the left at 90 degrees when the direction of the arrow is included in the second region, rotate the screen to the right at 90 degrees when the direction of the arrow is included in the third region, and rotate the screen to the right or left at 180 degrees when the direction of the arrow is included in the fourth region.

20. The electronic device of claim 18, wherein the first region is a region from plus 45 degrees to plus 135 degrees or less using the X axis of the plane coordinates as an initial line, the second region is a region to plus 45 degrees or less and a region to minus 45 degrees or less using the X axis of the plane coordinates as the initial line, the third region is a region from plus 135 degrees to plus 225 degrees or less or from minus 135 degrees to minus 225 degrees or less using the X axis of the plane coordinates as the initial line, and the fourth region is a region from minus 45 degrees to minus 135 degrees or less using the X axis of the plane coordinates as the initial line.

11. An electronic device comprising:

a processor unit configured to verify that a face of a user is included in photographed image information, recognize the face of the user included in the image information, and rotate a screen of the electronic device according to an angle of the recognized face; and

a memory configured to store software.

12. The electronic device of claim 11, further comprising a touch screen configured to display a message about whether a smart rotation function is set and allow the user to select a certain region included in the message, wherein the processor unit is configured to verify that the smart rotation function is set.

13. The electronic device of claim 12, wherein the processor unit is configured to verify that the smart rotation function is set and stop operations of a gyro sensor and an acceleration sensor.

14. The electronic device of claim 11, wherein the processor unit is configured to verify that a smart rotation function is set and wherein the memory includes a camera module configured to photograph an image in a predetermined direction at intervals of a predetermined time.

15. The electronic device of claim 12, wherein the smart rotation function is a function for rotating the screen of the electronic device, such that the user watches the screen thereof straight.

16. The electronic device of claim 13, wherein the smart rotation function is a function for rotating the screen of the electronic device, such that the user watches the screen thereof straight.