SYSTEM AND METHOD FOR IMPROVING POSTURE

• US 20090324024A1
• Filed: 08/22/2008
• Published: 12/31/2009
• Est. Priority Date: 06/25/2008
• Status: Abandoned Application

• Current Assignee: Postureminder, Ltd.
• Original Assignee: Postureminder, Ltd.
• Inventors: Worthington, Philip
• Application Number:
  US12/197,112
• Publication Number:
  US 20090324024A1
• Time in Patent Office: Days
• US Class Current: 382/118
• CPC Class Codes: A61B 5/103 Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes A61B5/08 takes precedence; measuring aids for tailors A41H1/00; measuring instruments specially adapted for dentistry A61C19/04
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: G06V 40/161 Detection; Localisation; Normalisation

Abstract

A system and method are provided for monitoring the posture of a user of the system, for example a user sitting at a computing device. A camera device is used for periodically capturing an image of a user; and for each captured image: a previously determined face detection model is applied to the image to detect a face of a user in the image; the detected face is compared to a previously determined good posture face to detect an instance of good posture; and a good posture message is generated to a user after a number of instances of good posture are detected.

Claims

1. A system for monitoring the posture of a user of the system, said system comprising:

a camera device for periodically capturing an image of a user; and

wherein for each captured image;

means for applying a previously determined face detection model to the image to detect a face of a user in the image;

means for comparing the detected face to a previously determined good posture face to detect an instance of good posture;

means for generating a good posture message to a user after a number of instances of good posture are detected.

2. The system according to claim 1 further comprising means for comparing the detected face to a previously determined good posture face to detect an instance of poor posture;

and means for generating a poor posture reminder to a user after a number of instances of poor posture are detected.

3. The system according to claim 1, wherein the means for comparing compares the position of the detected face within the image to the position of the previously captured good posture face to detect an instance of good posture.

4. The system according to claim 1, wherein the means for comparing compares the size of the detected face with the size of the previously captured good posture face to detect an instance of good posture.

5. The system according to claim 1, wherein the means for comparing compares the position of the detected face within the image to the position of the previously captured good posture image and compares the size of the detected face with the size of the previously captured good posture face to detect an incidence of good posture.

6. The system according to claim 2 further comprising means for delaying the good posture message on detecting an instance of poor posture.

7. The system according to claim 1 further comprising calibration means for periodically updating the previously determined good posture face and the previously determined face detection model.

8. The system according to claim 7, wherein the camera captures an autorecalibration reference image of a user prompted to move into a good posture and the system additionally comprises an autorecalibration means comprising:

means for comparing the user positioned face as determined by a user positioned face template to the autorecalibration reference image;

means for determining whether a face in the autorecalibration reference image corresponds to the user positioned face; and

after a predetermined number of instances of the face in the autorecalibration reference image not corresponding to the user positioned face, using the calibration means for determining an updated previously determined good posture face.

9. The system according to claim 8, wherein the camera captures an autorecalibration reference image of a good posture and the system additionally comprises an autorecalibration means comprising:

means for comparing the user positioned face as determined by a user positioned face template to the autorecalibration reference image;

means for determining whether a face in the autorecalibration reference image corresponds to the user positioned face; and

where the face in the autorecalibration reference image corresponds to the user positioned face, the system additionally comprises;

means for creating an updated face detection model based on the autorecalibration reference image;

means for applying the updated face detection model to the autorecalibration image and for assigning a reference template over an area of the image corresponding to the face and for using the template so as to determine an updated previously determined good posture face.

10. The system according to claim 2 further comprising means for calculating a good posture rating related to the number of incidences of good posture detected and the number of incidences of poor posture detected.

11. The system according to claim 10 further comprising comparison means for comparing good posture ratings from a plurality of users of the system.

12. A method for monitoring the posture of a user, said method comprising the steps of:

capturing an image of a user; and

for each captured image;

applying a previously determined face detection model to the image to detect a face of a user in the image;

comparing the detected face to a previously determined good posture face to detect an instance of good posture; and

generating a good posture message to a user after a number of instances of good posture are detected.

13. The method according to claim 12 further comprising the steps of:

comparing the detected face to a previously determined good posture face to detect an instance of poor posture; and

generating a poor posture reminder to a user after a number of instances of poor posture are detected.

14. The method according to claim 12, wherein the step of comparing comprises comparing the position of the detected face within the image to the position of the previously captured good posture face to detect an instance of good posture.

15. The method according claim 12, wherein the step of comparing comprises comparing the size of the detected face with the size of the previously captured good posture face to detect an instance of good posture.

16. The system according to claim 12, wherein the step of comparing comprises comparing the position of the detected face within the image to the position of the previously captured good posture image and comparing the size of the detected face with the size of the previously captured good posture face to detect an incidence of good posture.

17. The method according to claim 13 further comprising the step of delaying the good posture message on detecting an instance of poor posture.

18. The method according to any claim 12 further comprising a calibration step for periodically updating the previously determined good posture face and the previously determined face detection model.

19. The method according to claim 13 further comprising the step of calculating a good posture rating related to the number of incidences of good posture detected and the number of incidences of poor posture detected.

20. The method according to claim 19 further comprising the step of comparing good posture ratings from a plurality of users of the system.