Angle correction for camera

• US 7,593,627 B2
• Filed: 09/11/2006
• Issued: 09/22/2009
• Est. Priority Date: 08/18/2006
• Status: Expired due to Fees

• Current Assignee: Sony Ericsson Mobile Communications USA Incorporated (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications USA Incorporated (Sony Group Corp.)
• Inventors: Wernersson, Mats
• Primary Examiner(s): Assouad; Patrick J
• Assistant Examiner(s): ADAMS, BRET W
• Application Number:
  US11/530,607
• Publication Number:
  US 20080044169A1
• Time in Patent Office: 1,107 Days
• Field of Search: 396/50, 396/53, 396/147, 396/148, 396/429, 348/208.3
• US Class Current: 396/50
• CPC Class Codes: H04N 23/80 Camera processing pipelines; Components thereof

Abstract

A device may include a camera to capture an image; a sensor to measure, when the camera captures the image, information indicative of an angular displacement, about a line of sight of the camera, of an orientation of the device away from a reference orientation of the device; storage to store the measured information for rotating the image relative to a frame of the image based on the angular displacement.

Claims

1. A device comprising:

a camera to capture an image;

a sensor to measure information indicative of an angular displacement, about a line of sight of the camera, of an orientation of the camera away from a reference orientation of the camera when the camera captures the image;

storage to store the image and the measured information; and

a processor to rotate the image relative to a frame of the image based on the angular displacement,

where

when an absolute value of the angular displacement is less than 45°

, the image is rotated relative to the frame based on the angular displacement,

when the absolute value of the angular displacement is greater than 45° and

less than 135°

, the image is rotated relative to the frame based on 90°

minus the angular displacement,

when the absolute value of the angular displacement is greater than 135° and

less than 225°

, the image is rotated relative to the frame based on 180°

minus the angular displacement, and

when the absolute value of the angular displacement is greater than 225° and

less than 315°

, the image is rotated relative to the frame based on 270°

minus the angular displacement.

2. The device of claim 1,

where the storage stores the rotated image.

3. The device of claim 1, further comprising

a communication interface for transferring the measured information and the image to a computer for rotating the image relative to the frame of the image based on the angular displacement.

4. The device of claim 1, further comprising

an indicator to indicate when the angular displacement is zero.

5. The device of claim 1, where the processor comprises a first processor and where the device further comprises

a second processor to capture automatically the image when the angular displacement is zero.

6. A method comprising:

capturing an image in a camera;

when capturing the image, measuring information indicative of an angular displacement, about a line of sight of the camera, of an orientation of the camera away from a reference orientation of the camera;

storing the measured information for rotating the image relative to a frame of the image based on the angular displacement;

distinguishing whether the image is captured in a portrait mode where a major axis of the image is vertical or in a landscape mode where the major axis of the image is horizontal, and

determining whether the image is captured upside down,

rotating the image relative to the frame of the image based on the angular displacement, where

when an absolute value of the angular displacement is less than 45°

, the image is rotated relative to the frame based on the angular displacement,

when the absolute value of the angular displacement is greater than 45° and

less than 135°

, the image is rotated relative to the frame based on 90°

minus the angular displacement,

when the absolute value of the angular displacement is greater than 135° and

less than 225°

, the image is rotated relative to the frame based on 180°

minus the angular displacement, and

when the absolute value of the angular displacement is greater than 225° and

less than 315°

, the image is rotated relative to the frame based on 270°

minus the angular displacement; and

storing the rotated image.

7. The method of claim 6, further comprising

transferring the measured information and the image to a personal computer for rotating the image relative to the frame of the image based on the angular displacement.

8. The method of claim 6, further comprising

indicating when the angular displacement is zero.

9. The method of claim 6, further comprising

automatically capturing the image when the angular displacement is zero.

10. A device comprising:

a processor

to receive

an image captured by a camera; and

information measured by a sensor when the camera captured the image, the measured information indicative of an angular displacement of an orientation of the camera away from a reference orientation of the camera, and

to rotate the image relative to a frame of the image based on the angular displacement,

where

when an absolute value of the angular displacement is less than 45°

, the image is rotated relative to the frame based on the angular displacement,

when the absolute value of the angular displacement is greater than 45° and

less than 135°

, the image is rotated relative to the frame based on 90°

minus the angular displacement,

when the absolute value of the angular displacement is greater than 135° and

less than 225°

, the image is rotated relative to the frame based on 180°

minus the angular displacement, and

when the absolute value of the angular displacement is greater than 225° and

less than 315°

, the image is rotated relative to the frame based on 270°

minus the angular displacement; and

a computer-readable medium operationally coupled to the processor and comprising a data structure, the data structure comprising

a first data field to store the image, and

a second data field to store the information measured by the sensor.

11. A computer-readable medium comprising instructions to operate a processor for performing a method, the method comprising:

receiving measured information for rotating an image relative to a frame of the image, where the image was captured by a camera, where the measured information is indicative of an angular displacement, about a line of sight of the camera, of an orientation of the camera away from a reference orientation of the camera, and where the information was measured when capturing the image;

rotating the image relative to the frame of the image based on the angular displacement, where

when an absolute value of the angular displacement is less than 45°

, the image is rotated relative to the frame based on the angular displacement,

when the absolute value of the angular displacement is greater than 45° and

less than 135°

, the image is rotated relative to the frame based on 90°

minus the angular displacement,

when the absolute value of the angular displacement is greater than 135° and

less than 225°

, the image is rotated relative to the frame based on 180°

minus the angular displacement, and

when the absolute value of the angular displacement is greater than 225° and

less than 315°

, the image is rotated relative to the frame based on 270°

minus the angular displacement; and

storing or displaying the rotated image.

12. A device comprising:

means for capturing an image in a camera;

means for measuring, when capturing the image, information indicative of an angular displacement of an orientation of the camera away from a reference orientation of the camera;

means for storing the measured information for rotating the image relative to a frame of the image based on the angular displacement; and

means for rotating the image relative to the frame of the image based on the angular displacement,

where

when an absolute value of the angular displacement is less than 45°

, the means for rotating the image rotates the image relative to the frame based on the angular displacement,

when the absolute value of the angular displacement is greater than 45° and

less than 135°

, the means for rotating the image rotates the image relative to the frame based on 90°

minus the angular displacement,

when the absolute value of the angular displacement is greater than 135° and

less than 225°

, the means for rotating the image rotates the image relative to the frame based on 180°

minus the angular displacement, and

when the absolute value of the angular displacement is greater than 225° and

less than 315°

, the means for rotating the image rotates the image relative to the frame based on 270°

minus the angular displacement.

13. The method of claim 12, where the means for storing stores the rotated image.

14. The method of claim 12, further comprising

means for transferring the stored measured information and the image to a personal computer for rotating the image relative to the frame of the image based on the angular displacement.

15. The method of claim 12, further comprising

means for indicating when the angular displacement is zero.

16. The method of claim 15, further comprising

means for automatically capturing the image when the angular displacement is zero.