System and method for providing an awareness of remote people in the room during a videoconference

• US 6,611,281 B2
• Filed: 11/13/2001
• Issued: 08/26/2003
• Est. Priority Date: 11/13/2001
• Status: Expired due to Fees

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Strubbe, Hugo J.
• Primary Examiner(s): Ramakrishnaiah, Melur
• Application Number:
  US10/014,200
• Publication Number:
  US 20030090564A1
• Time in Patent Office: 651 Days
• Field of Search: 348/14-1-, 348/14.1, 348/14.11, 348/14.12, 348/14.13, 348/169, 370/260, 709/204, 345/753
• US Class Current: 348/14.01
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04N 7/15 Conference systems

Abstract

A system and method are provided to track and convey the presence of all participants in video conferencing. The system is configured to generate a video locator output and an audio locator output to determine the presence of all participants. Initially, the system focuses on a person who is speaking and conveys a close-up view of that person based on the video and audio locator outputs. Thereafter, if the person speaking continues to speak or becomes silent for a predetermined time period, the system operates to adjust the camera setting to display other participants in sequence who are not speaking or zooms out the camera by a specified amount to include all participants, so that the presence, including facial expressions and reactions, of all participants can be conveyed to the remote receiving end. The system is also configured to capture a new person entering or an existing participant exiting during the course of a video conference session.

Claims

1. A method for tracking a plurality of participants in a video conference, the method comprising the steps of:

monitoring said video conferencing to track said participants;

generating a video locator output representing a location of each of said participants;

generating an audio locator output to determine a person who is speaking;

adjusting a setting of a camera based on whether said video locator output and said audio locator output are within a specified range of one another;

if said speaker is silent for a predetermined time period, adjusting said camera setting to display other participants not speaking in sequence; and

,

detecting and displaying a new participant entering said video conference.

2. The method of claim 1, wherein if said speaking participant continually speaks for more than a predefined time period, adjusting said camera setting to sequentially display other participants not speaking.

3. The method of claim 1, further comprising the step of adjusting said camera to display all participants in said video conferencing.

4. The method of claim 1, further comprising the step of zooming out said camera by a predetermined amount if said speaking participant is silent for said predetermined time period.

5. The method of claim 1, further comprising the step of detecting a new person entering said video conferencing.

6. The method of claim 1, wherein, if said new person is detected, utilizing said video locator output to adjust said camera setting to display said new person.

7. The method of claim 1, further comprising the step of detecting one of said participants leaving said video conferencing.

8. The method of claim 7, wherein, if one of said participants is leaving, utilizing said video locator output to adjust said camera setting to display said leaving participant.

9. The method of claim 1, wherein said camera is a pan-tilt-zoom (PTZ) camera.

10. The method of claim 1, further comprising the step of returning said camera to display said speaker.

11. The method of claim 1, wherein said speaker and said other participants have a location;

and wherein said detecting and displaying step further comprises continuously observing said location so as to detect and display said new participant upon said new participant'"'"'s arrival at said location.

12. A method for tracking a plurality of participants in a video conference, the method comprising the steps of:

monitoring said video conference to track said participants;

generating a video locator output and an audio locator outputs representing a location of each of said participants;

adjusting a setting of a camera to focus on one of said participants who is speaking;

detecting whether said speaking participant continuously speaks for a threshold time period;

if so, adjusting said camera setting to display other participants sequentially who are not speaking during said video conferencing; and

,

detecting and displaying a new participant entering said video conference.

13. The method of claim 12, further comprising the steps of returning said camera to display said speaker.

14. The method of claim 12, further comprising the steps of determining whether said speaking participant is silent for a predetermined time period;

and,

if so, adjusting said camera setting to sequentially display other participants after a detected period of silence exceeds said predetermined time period.

15. The method of claim 14, further comprising the step of zooming out said camera by a predetermined amount after detected period of silence exceeds said predetermined time period.

16. The method of claim 12, wherein said step of adjusting the setting of said camera when said audio locator and video locator outputs are within a specified range of one another.

17. The method of claim 12, further comprising the step of adjusting said camera to display all participants in said video conferencing.

18. The method of claim 12, further comprising the step of detecting a new person entering said video conferencing.

19. The method of claim 12, wherein, if said new person is detected, utilizing the video locator output to adjust said camera setting to display said new person.

20. The method of claim 12, further comprising the step of detecting one of said participants leaving said video conferencing.

21. The method of claim 20, wherein, if one of said participants is leaving, utilizing the video locator output to adjust said camera setting to display said leaving participant.

22. The method of claim 12, wherein said camera is a pan-tilt-zoom (PTZ) camera.

23. An apparatus for tracking a plurality of participants in a video conferencing, comprising:

a camera;

a processor coupled to said camera and operative (i) to process an audio locator output and a video locator output indicative of the location of each participant, (ii) adjust the setting of a camera to focus on one of said participants who is speaking;

(iii) detect whether said speaking participant is silent for a threshold time period;

(iv) adjust said camera setting to sequentially display other participants who are not speaking after a detected period of silence exceeds said threshold time period; and

, (v) detect and display a new participant entering said video conference.

24. The apparatus of claim 23, wherein said processor is further operative to zoom out said camera by a predetermined amount after the detected period of silence exceeds said threshold time period.

25. The apparatus of claim 23, wherein said camera is focused on said speaker if said audio locator and video locator outputs are within a specified range of one another.

26. The apparatus of claim 23, wherein said processor is further operative to adjust said camera to display all participants after the detected period of silence exceeds said threshold time period.

27. The apparatus of claim 23, wherein said processor is further operative to detect a new person entering said video conferencing.

28. The apparatus of claim 23, wherein said processor is further operative to utilize said video locator output to adjust said camera setting to capture said new person.

29. The apparatus of claim 23, wherein said processor is further operative to detect one of said participants leaving said video conferencing.

30. The apparatus of claim 29, wherein said processor is further operative to utilize the video locator output to adjust said camera setting to display said leaving participant.

31. The apparatus of claim 23, wherein said camera is a pan-tilt-zoom (PTZ) camera.

32. The apparatus of claim 23, wherein said processor is further operative to adjust said camera setting to sequentially display other participants who are not speaking if said speaking participant continues to speak for more than said threshold time period.

33. The method of claim 32, further comprising the step of returning said camera to display said speaker.

34. The apparatus of claim 32, wherein said processor is further operative to zoom out said camera by a predetermined amount if said speaking participant continues to speak for more than said threshold time period.

35. The apparatus of claim 34, wherein said processor is further operative to adjust said camera to display all participants if said speaking participant continues to speak for more than said threshold time period.