METHOD AND APPARATUS FOR CHOOSING A DESIRED FIELD OF VIEW FROM A WIDE-ANGLE IMAGE OR VIDEO

• US 20110128350A1
• Filed: 11/30/2009
• Published: 06/02/2011
• Est. Priority Date: 11/30/2009
• Status: Abandoned Application

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Sadler, Daniel J., Bostaph, Joseph W., Oliver, Manuel
• Application Number:
  US12/627,331
• Publication Number:
  US 20110128350A1
• Time in Patent Office: Days
• US Class Current: 348/36
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/695 Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
• CPC Class Codes: H04N 23/698 for achieving an enlarged field of view, e.g. panoramic image capture

Abstract

A wide-angle camera will collect wide-angle images. A portion of the wide-angle image (desired field of view) will be selected based on accelerometer readings. More particularly, to keep the desired field of view of a camera in an appropriate position, a correction is made to the tilt and roll of the desired field of view by using motion sensors to determine the horizon based on measuring the direction of gravity. A correction is also made to the yaw of the desired field of view using motion sensors to determine a forward facing position when the user is in motion. Because the desired field of view is corrected for variations resulting from user activity, any image collected from the camera is more likely to be pointed at a desired position.

Claims

1. A method for choosing a desired field of view from image or video, the method comprising the steps of:

collecting an image or video from image collecting circuitry;

determining a direction of motion from an accelerometer; and

choosing the desired field of view from the image or video based on the direction of motion determined from the accelerometer.

2. The method of claim 1 wherein the image or video collected is a wide-angle image or video.

3. The method of claim 1 wherein the desired field of view is smaller than the field of view of the image collecting circuitry.

4. The method of claim 1 further comprising the steps of transmitting the desired field of view.

5. The method of claim 1 further comprising storing the desired field of view.

6. The method of claim 1 wherein the step of choosing the desired field of view from the image or video based on the direction of motion comprises the step of aligning the center of the desired field of view with a forward direction.

7. The method of claim 1 further comprising the steps of:

determining a direction of gravity with the accelerometer; and

choosing the desired field of view from the image or video based on the direction of motion and the direction of gravity determined from the accelerometer.

8. The method of claim 7 wherein the step of choosing the desired field of view from the image or video based on the direction of motion and the direction of gravity comprises the steps of:

aligning a vertical edge of the desired field of view with the direction of gravity;

aligning a center of the desired field of view with a horizon; and

aligning the center of the desired field of view with a forward direction.

9. A method for choosing a desired field of view from image or video, the method comprising the steps of:

collecting an image or video from wide-angle image collecting circuitry having a first field of view;

determining a direction of motion from an accelerometer;

determining a direction of gravity from the accelerometer; and

choosing the desired field of view from the image or video based on the direction of motion and the direction of gravity determined from the accelerometer, wherein the desired field of view is smaller than the first field of view.

10. The method of claim 9 wherein the step of choosing the desired field of view from the image or video based on the direction of motion and the direction of gravity comprises the steps of:

aligning a vertical edge of the desired field of view with the direction of gravity;

aligning a center of the desired field of view with a horizon; and

aligning the center of the desired field of view with a forward direction.

11. An apparatus for choosing a desired field of view from image or video, the apparatus comprising:

image collecting circuitry collecting an image or video;

logic circuitry determining a direction of motion from an accelerometer and choosing the desired field of view from the image or video based on the direction of motion determined from the accelerometer.

12. The apparatus of claim 11 wherein the image or video collected is a wide-angle image or video.

13. The apparatus of claim 11 wherein the desired field of view is smaller than the field of view of the image collecting circuitry.

14. The apparatus of claim 11 further comprising a transmitter, transmitting the desired field of view.

15. The apparatus of claim 11 further comprising storage, storing the desired field of view.

16. The apparatus of claim 11 wherein the desired field of view is determined by aligning the center of the desired field of view with a forward direction.

17. The apparatus of claim 11 wherein the logic circuitry determines a direction of gravity with the accelerometer and chooses the desired field of view from the image or video based on the direction of motion and the direction of gravity determined from the accelerometer.

18. The apparatus of claim 17 wherein the logic circuitry chooses the desired field of view from the image or video based on the direction of motion and the direction of gravity by:

aligning a vertical edge of the desired field of view with the direction of gravity;

aligning a center of the desired field of view with a horizon; and

aligning the center of the desired field of view with a forward direction.