DISTANCE LEARNING VIA INSTRUCTOR IMMERSION INTO REMOTE CLASSROOM

• US 20110050842A1
• Filed: 08/27/2009
• Published: 03/03/2011
• Est. Priority Date: 08/27/2009
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Polycom Incorporated (Plantronics, Inc.)
• Inventors: MACEDO, MARCIO, SALEH, YOUSSEF, PARIPALLY, GOPAL
• Granted Patent: US 8,208,002 B2
• Time in Patent Office: Days
• US Class Current: 348/14.08
• CPC Class Codes: G09B 5/06 with both visual and audible presentation of the material to be studied
• CPC Class Codes: H04N 7/144 camera and display on the same optical axis, e.g. optically multiplexing the camera and display for eye to eye contact
• CPC Class Codes: H04N 7/15 Conference systems

Abstract

A distance learning scenario includes a local classroom having a local videoconferencing device communicating with a remote videoconferencing device at a remote classroom. A first local camera captures images of the local participants, a second local camera captures images of an instructor, and a local display screen displays images of remote participants. At the remote location, a first remote camera captures images of remote participants, a first remote display screen displays images of local participants, and a second remote display screen displays images of the instructor. The local display screen is situated on a side of the local presenter that is substantially opposite to the side on which the first remote display screen is situated relative to the second remote display screen at the remote location to implement video-mirroring. The local and remote display screens display life-size images of the participants and the instructor.

Claims

1. A videoconferencing system operable to communicate with a remote location, comprising:

at least one camera positioned to capture an image of one or more local participants;

a second camera positioned to capture an image of a local presenter;

at least one local codec configured to encode and transmit the captured image of one or more local participants and the captured image of the local presenter to a remote location and decode received images from the remote location; and

a first local display configured to display a received and decoded image of one or more remote participants at the remote location,

wherein the first local display is situated on a side of the local presenter that is opposite the one or more local participants.

2. The videoconferencing system of claim 1, further comprising:

a second local display configured to display a received and decoded image of a remote presenter at the remote location,

wherein the second local display is situated on a side of the first local display that is opposite the local presenter.

3. The videoconferencing system of claim 1, wherein the second camera is placed within the field of view of the local presenter.

4. The videoconferencing system of claim 1, wherein the second camera is situated at the location of the first local display.

5. The videoconferencing system of claim 2, wherein the first local display and the second local display are configured to display the image of the one or more remote participants and the image of the remote presenter substantially equal in size to the size of the one or more remote participants and the remote presenter, respectively.

6. The videoconferencing system of claim 1, wherein the at least one local codec is configured to determine an estimated position of the one or more local participants in the transmitted image of the one or more local participants based on acoustic input from the one or more local participants, and to transmit the estimated position of the one or more local participants to the remote location.

7. The videoconferencing system of claim 1, wherein the at least one local codec is configured to decode received estimated position information of at least one remote participant within the received image of the one or more remote participants and direct sound associated with the at least one remote participant to at least one loudspeaker that is closest to the estimated position of the at least one remote participant.

8. The videoconferencing system of claim 1, further comprising a local writing board, wherein the at least one local codec is configured to encode and transmit contents of the local writing board to the remote location.

9. The videoconferencing system of claim 1, further comprising personal content displays to display contents of a remote white board received from the remote location.

10. The videoconferencing system of claim 1, further comprising:

an image processing engine configured to extracting a portion of the captured image of the local presenter associated with the body of the local presenter and overlaying the extracted portion on a background image to form a processed image of the local presenter,

wherein the at least one local codec is configured to encode and transmit the processed image of the local presenter to the remote location.

11. A videoconferencing system operable to communicate with a remote location having one or more remote participants, comprising:

at least one camera positioned to capture an image of one or more local participants;

at least one local codec configured to encode and transmit the captured image of one or more local participants to a remote location and decode a received image of one or more remote participants and a remote presenter from the remote location;

a first local display configured to display the received and decoded image of the one or more remote participants; and

a second local display configured to display the received and decoded image of the remote presenter;

wherein the first local display is situated on a side of the second local display that is opposite the one or more local participants.

12. The videoconferencing system of claim 11, further comprising a second camera positioned to capture an image of a local presenter,

wherein the at least one local codec is configured to encode and transmit the captured image the local presenter to the remote location, and

wherein the local presenter is situated on a side of the first display that is opposite the second local display.

13. The videoconferencing system of claim 12, wherein the second camera is placed within the field of view of the local presenter.

14. The videoconferencing system of claim 12, wherein the second camera is situated at the location of the first local display.

15. The videoconferencing system of claim 11, wherein the first local display and the second local display are configured to display the image of at least one remote participant and the image of the remote presenter substantially equal in size to the size of the at least one remote participant and the remote presenter, respectively.

16. The videoconferencing system of claim 11, wherein the at least one local codec is configured to determine an estimated position of the one or more local participants in the transmitted images of the one or more local participants based on acoustic input from the one or more local participants, and to transmit the estimated position of the one or more local participants to the remote location.

17. The videoconferencing system of claim 11, wherein the at least one local codec is configured to decode estimated position information of at least one remote participant within the received image of one or more remote participants and direct sound associated with the at least one remote participant to at least one loudspeaker that is closest to the estimated position of the at least one remote participant.

18. The videoconferencing system of claim 11, further comprising a local writing board, wherein the at least one local codec is configured to encode and transmit contents of the local writing board to the remote location.

19. The videoconferencing system of claim 11, further comprising personal content displays to display contents of a remote white board received from the remote location.

20. The videoconferencing system of claim 12, further comprising:

an image processing engine configured to extracting a portion of the captured image of the local presenter associated with the body of the local presenter and overlaying the extracted portion on a background image to form a processed image of the local presenter,

wherein the at least one local codec is configured to encode and transmit the processed image of the local presenter to the remote location.

21. A method for conducting a videoconferencing session between a videoconferencing system at a local location and a videoconferencing system at a remote location, comprising:

capturing images of local participants;

capturing images of a local presenter;

transmitting the images of the local participants and the local presenter to the remote location;

receiving images of remote participants from the remote location; and

displaying images of remote participants on a first local display,

wherein the first local display is situated on a side of the local presenter that is opposite the one or more local participants.

22. The method of claim 21, further comprising:

receiving and displaying images a remote presenter on a second local display,

wherein the second local display is situated on a side of the first local display that is opposite the local presenter.

23. The method of claim 22, wherein displaying images comprises displaying an image of at least one remote participant that is substantially equal in size to the size of the at least one remote participant.

24. The method of claim 21, further comprising capturing and transmitting images of a local white board to the remote location.

25. The method of claim 21, further comprising receiving and displaying images of a remote white board on one or more local personal displays.

26. The method of claim 25, further comprising providing a user interface on the one or more local personal displays, wherein the one or more local personal displays have touch-screens.

27. The method of claim 21, further comprising determining and transmitting an estimated position of one or more local participants within the transmitted images of the local participants based on acoustic input from the one or more local participants.

28. The method of claim 21, further comprising:

receiving an estimated position of one or more remote participants within the received images of the remote participants; and

directing a received audio signal associated with the one or more remote participants to one or more loudspeakers closest to the estimated position.

29. The method of claim 21, further comprising:

processing the captured images of the local presenter by extracting a portion of the captured images of the local presenter associated with the body of the local presenter and overlaying the extracted portion on a background image to form processed images of the local presenter; and

transmitting processed images of the local presenter to the remote location.

30. The method of claim 29, wherein the extracting is carried out using face recognition techniques.