DEVICE AND METHOD FOR CONTROLLING ROTATION OF DISPLAYED IMAGE

• US 20130176341A1
• Filed: 09/12/2012
• Published: 07/11/2013
• Est. Priority Date: 01/10/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: JUNG, Ji-su, Park, Yong-gook, Eom, Ju-il
• Granted Patent: US 9,262,984 B2
• Time in Patent Office: Days
• US Class Current: 345/649
• CPC Class Codes: G06F 1/1626 with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
• CPC Class Codes: G06F 1/1686 the I/O peripheral being an integrated camera
• CPC Class Codes: G06F 1/1694 the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer
• CPC Class Codes: G06F 2200/1614 Image rotation following screen orientation, e.g. switching from landscape to portrait mode
• CPC Class Codes: G06F 3/0304 Detection arrangements using opto-electronic means constructional details of pointing devices not related to the detection arrangement using opto-electronic means G06F3/033; optical digitisers G06F3/042
• 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
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: G09G 5/38 with means for controlling the display position
• CPC Class Codes: H04M 1/72454 according to context-related or environment-related conditions
• CPC Class Codes: H04M 2250/52 including functional features of a camera

Abstract

A device and method for controlling rotation of a displayed image is provided. The device includes a sensor unit for detecting whether the device has been rotated; a photography unit for taking a picture of the face of a user in response to a determination that the device is rotated; a rotation determination unit for determining a rotation of the displayed image based on the captured face image of the user; and an image rotation unit for rotating the displayed image according to the determined rotation of the displayed image.

Claims

1. A device for controlling rotation of a displayed image, the device comprising:

a sensor unit for detecting whether the device has been rotated;

a photography unit for taking a picture of the face of a user in response to a determination that the device is rotated;

a rotation determination unit for determining a rotation of the displayed image based on the captured face image of the user; and

an image rotation unit for rotating the displayed image according to the determined rotation of the displayed image.

2. The device of claim 1, further comprising a photography activation unit for activating the photography unit upon detecting that the device has been rotated.

3. The device of claim 1, wherein the rotation determination unit determines the rotation of the displayed image based on a shape of an eye in the face image.

4. The device of claim 3, wherein the rotation determination unit determines the rotation of the displayed image based on at least one of a direction of horizontal and vertical axes of the eye.

5. The device of claim 1, wherein the rotation determination unit determines the rotation of the displayed image based on a direction of a line connecting eyes in the face image.

6. The device of claim 1, wherein the rotation determination unit determines whether to rotate the displayed image based on a shape of hair in the face image.

7. The device of claim 6, wherein the image rotation unit determines a rotational direction of the displayed image based on the shape of the hair in the face image.

8. The device of claim 1, wherein the rotation determination unit determines whether to rotate the displayed image based on positions of an eye and an eyebrow in the face image.

9. The device of claim 8, wherein the image rotation unit determines a rotational direction of the displayed image based on the positions of the eye and eyebrow in the face image.

10. The device of claim 1, wherein the sensor unit measures illumination around the device, and

the device further comprises a brightness adjustment unit for adjusting brightness of a screen of the device.

11. A method of controlling rotation of a displayed image, the method comprising:

determining whether a device has been rotated;

photographing a face of a user upon a determination that the device is rotated;

determining a rotation of the displayed image based on the captured face image of the user; and

rotating the displayed image based on the determined rotation of the displayed image.

12. The method of claim 11, further comprising:

activating a photography unit upon a determination that the device has been rotated,

wherein photographing the face of the user includes photographing the face of the user with the activated photography unit.

13. The method of claim 11, wherein determining the rotation of the displayed image includes determining the rotation of the displayed image based on a shape of an eye in the face image.

14. The method of claim 13, wherein determining the rotation of the displayed image includes determining the rotation of the displayed image based on at least one of a direction of horizontal and vertical axes of the eye.

15. The method of claim 11, wherein determining the rotation of the displayed image includes determining the rotation of the displayed image based on a direction of a line connecting eyes in the face image.

16. The method of claim 11, wherein determining of rotation of the displayed image includes determining whether to rotate the displayed image based on a shape of hair in the face image.

17. The method of claim 16, further comprising determining a rotational direction of the displayed image based on the shape of the hair in the face image,

wherein rotating the displayed image includes rotating the displayed image in the determined rotational direction.

18. The method of claim 11, wherein determining the rotation of the displayed image includes determining whether to rotate the displayed image based on positions of an eye and an eyebrow in the face image.

19. The method of claim 18, further comprising determining the rotational direction of the displayed image based on the positions of the eye and the eyebrow in the face image,

wherein rotating the displayed image includes rotating the displayed image in the determined rotational direction.

20. The method of claim 11, further comprising,

measuring illumination around the device;

and

adjusting brightness of a screen of the device based on the measured illumination.

21. A computer readable recording medium having programs embodied thereon, which perform, when executed by a computer, a method comprising:

determining whether a device has been rotated;

photographing a face of a user upon a determination that the device is rotated;

determining a rotation of the displayed image based on the captured face image of the user; and

rotating the displayed image based on the determined rotation of the displayed image.