METHOD FOR DISPLAYING AN IMAGE ON A DISPLAY

• US 20090295835A1
• Filed: 05/28/2009
• Published: 12/03/2009
• Est. Priority Date: 05/30/2008
• Status: Abandoned Application

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Tandberg Telecom AS (Cisco Systems, Inc.)
• Inventors: HUSOY, Per Ove
• Application Number:
  US12/473,929
• Publication Number:
  US 20090295835A1
• Time in Patent Office: Days
• US Class Current: 345/660
• CPC Class Codes: H04L 12/1827 Network arrangements for conference optimisation or adaptation
• CPC Class Codes: H04N 21/440272 for performing aspect ratio conversion
• CPC Class Codes: H04N 21/44218 Detecting physical presence or behaviour of the user, e.g. using sensors to detect if the user is leaving the room or changes his face expression during a TV program methods or arrangements for recognising human body or animal bodies or body parts G06V40/10; methods or arrangements for acquiring or recognising human faces, facial parts, facial sketches, facial expressions G06V40/16; methods or arrangements for recognising movements or behaviour G06V40/20; arrangements for identifying users in broadcast systems H04H60/45
• CPC Class Codes: H04N 21/4788 communicating with other users, e.g. chatting arrangements for providing for computer conferences, e.g. chat rooms, to substation in data switching networks H04L12/1813; distributed application using peer-to-peer [P2P] networks H04L67/104
• CPC Class Codes: H04N 7/15 Conference systems
• CPC Class Codes: H04N 7/173 with two-way working, e.g. subscriber sending a programme selection signal

Abstract

A method for displaying an image on a display of a video conferencing apparatus, including: providing, at the display of the video conferencing apparatus, a primary image; providing, at the video conferencing apparatus, an observation angle of a viewer with respect to the display; modifying, at the video conferencing apparatus, the primary image by applying a scaling factor that is a function of the observation angle to the primary image, resulting in a modified image; and displaying the modified image on the display and the primary image on the display, wherein the modified image and the primary image are displayed in different viewing directions on a same display area of the display.

Claims

1. A method for displaying an image on a display of a video conferencing apparatus, comprising:

providing, at the display of the video conferencing apparatus, a primary image;

providing, at the video conferencing apparatus, an observation angle of a viewer with respect to said display;

modifying, at the video conferencing apparatus, the primary image by applying a scaling factor that is a function of said observation angle to said primary image, resulting in a modified image; and

displaying said modified image on said display and said primary image on said display, wherein said modified image and said primary image are displayed in different viewing directions on a same display area of the display.

2. The method according to claim 1, wherein

said step of providing said observation angle includes providing a predetermined angle value.

3. The method according to claim 1, wherein

said step of providing said observation angle comprises determining a value of an angle between:

a direction between said viewer'"'"'s position and a point of said display and a direction perpendicular to said display.

4. The method according to claim 1, wherein

said observation angle is in a horizontal plane, and

said modifying step includes horizontally scaling said primary image by applying the scaling factor.

5. The method according to claim 4, wherein

said horizontally scaling includes horizontally extending said primary image with the scaling factor which is larger for higher observation angles than for smaller observation angles.

6. The method according to claim 5, wherein

said scaling factor is substantially in inverse proportional to a cosine function of said observation angle.

7. The method according to claim 1, wherein

said display is an integrated multi-view display.

8. The method according to claim 1, wherein

said display is a multi-view projection screen illuminated by a plurality of projectors.

9. The method according to claim 1, wherein

said primary image and said modified image are included in video signals.

10. The method according to claim 1, wherein

the providing the observation angle includes using a video conference camera to obtain the observation angle of the viewer.

11. A video conferencing system, comprising:

a video conferencing endpoint configured to receive a primary image;

a processing device configured to determine an observation angle of a viewer with respect to said display,

said processing device being configured to modify the primary image by applying a scaling factor that is a function of said observation angle to said primary image, resulting in a modified image; and

display device configured to display said modified image and said primary image, wherein said modified image and said primary image are displayed in different viewing directions on a same display area of the display.

12. A computer readable storage medium encoded with instruction, which when executed by a video conference apparatus, causes the video conferencing apparatus to implement a method for displaying an image on a display, comprising

providing, at the display of the video conferencing device, a primary image;

providing, at the video conferencing device, an observation angle of a viewer with respect to said display;

modifying, at the video conferencing device, the primary image by applying a scaling factor that is a function of said observation angle to said primary image, resulting in a modified image; and

displaying said modified image on said display and said primary image on said display, wherein said modified image and said primary image are displayed in different viewing directions on a same display area of the display.

13. The computer readable storage medium according to claim 12, wherein

said step of providing said observation angle includes providing a predetermined angle value.

14. The computer readable storage medium according to claim 12, wherein

said step of providing said observation angle comprises determining a value of an angle between:

a direction between said viewer'"'"'s position and a point of said display and a direction perpendicular to said display.

15. The computer readable storage medium according to claim 12, wherein

said observation angle is in a horizontal plane, and

said modifying step includes horizontally scaling said primary image by applying the scaling factor.

16. The computer readable storage medium according to claim 15, wherein

said horizontally scaling includes horizontally extending said primary image with the scaling factor which is larger for higher observation angles than for smaller observation angles.

17. The computer readable storage medium according to claim 16, wherein

said scaling factor is substantially in inverse proportional to a cosine function of said observation angle.

18. The computer readable storage medium according to claim 12, wherein

said display is an integrated multi-view display.

19. The computer readable storage medium according to claim 12, wherein

said display is a multi-view projection screen illuminated by a plurality of projectors.

20. The computer readable storage medium according to claim 12, wherein

the providing the observation angle includes using a video conference camera to obtain the observation angle of the viewer.