Utilizing a portable electronic device to detect motion

• US 7,190,263 B2
• Filed: 09/20/2004
• Issued: 03/13/2007
• Est. Priority Date: 09/20/2004
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Patel, Dipen T., McKay, Brent M., Garcia, David J., Smith, James E., Martinez, Ricardo, Skujins, Anthony V.
• Primary Examiner(s): NGUYEN, PHUNG
• Application Number:
  US10/944,965
• Publication Number:
  US 20060061654A1
• Time in Patent Office: 904 Days
• Field of Search: 340/539.1, 340/555, 340/541, 340/506, 340/426.1, 340/573.1, 348/143, 348/154, 455/575.1
• US Class Current: 340/539.1
• CPC Class Codes: G08B 13/19602 Image analysis to detect motion of the intruder, e.g. by frame subtraction
• CPC Class Codes: G08B 13/19621 Portable camera
• CPC Class Codes: G08B 13/1968 Interfaces for setting up or customising the system

Abstract

A mobile telephone (105) with a camera feature (110) that functions as a motion detection device. The mobile telephone can include an image capture software routine (120) and a motion detection software routine (125). The image capture software routine can use the camera feature to automatically generate one or more time spaced images. The motion detection software routine can detect motion based upon differences between the time spaced images. The motion detection software routine can selectively utilize a multiple algorithms.

Claims

1. A motion detection device comprising:

a mobile telephone with a camera feature, said mobile telephone comprising an image capture software routine and a motion detection software routine, wherein said image capture software routine is configured to use the camera feature to automatically generate a plurality of time spaced images, and wherein the motion detection software routine is configured to detect motion based upon differences between the plurality of time spaced images, wherein the motion detection software routine is configured to selectively utilize a plurality of different algorithms, wherein one of the plurality of algorithms used by the motion detection software routine comprises a RGB summation algorithm, said RGB summation algorithm comparing images encoded as an array of red, green, and blue values.

2. The motion detection device of claim 1, wherein the motion detection device is communicatively linked to a surveillance server via a wireless local area network, said surveillance server configured to automatically perform at least one surveillance task responsive to signals received front the motion detection device.

3. The motion detection device of claim 1, wherein the image capture software routine is configured to adjust at least one of focus and zoom associated with the camera feature.

4. The motion detection device of claim 1, wherein said RGB summation algorithm utilizes only a portion of the red, green, and blue values present within each of the images being compared.

5. The motion detection device of claim 1, wherein said RGB summation algorithm calculates the differences between a first one of the plurality of time spaced images and a second one of the plurality of time spaced images by comparing a quantity of red values present in the first image with a quantity of red values present in the second image, by comparing a quantity of green values present in the first image with a quantity of green values present in the second image, and by comparing the quantity of blue values present in the first image with a quantity of blue values present in the second image.

6. The motion detection device of claim 5, said RGB summation algorithm calculating a difference (Pdiff) between the first image (first) and the second image (second) using red (R) green (G) and blue (B) value correlations based upon the formula:

Pdiff=(|Rfirst−

Rsecond|)+(|Gfirst−

Gsecond|)+(|Bfirst−

Bsecond|).

7. The motion detection device of claim 5, said RGB summation algorithm calculating a difference (Pdiff) between the first image (first) and the second image (second) using red (R) green (G) and blue (B) values based upon the formula:

Pdiff=Wred(|Rfirst−

Rsecond|)+Wgreen(|Gfirst−

Gsecond|) +Wblue(|Bfirst−

Bsecond|),

where Wred, Wgreen, and Wblue are numerical weights, and wherein a least one of Wred, Wgreen, and Wblue has a different value than another one of Wred, Wgreen, and Wblue.

8. The motion detection device of claim 1, wherein one of the plurality of algorithms used by the motion detection software routine comprises a luminance algorithm, said luminance algorithm comparing images encoded in a YUV format.